2024 Cambridge IAL Psychology (9990) 模擬試題連答案詳解

(a) The victims were dressed identically in an Eisenhower jacket, old trousers, and no tie. (Any two of these features).
(b) Strength: The opportunity sample consisted of real subway riders on a standard journey (approx. 4450 participants), which means the sample size was very large and representative of standard commuters, improving ecological validity.
Weakness: It was an opportunity sample of people who happened to be on those specific trains between 11:00 am and 3:00 pm on weekdays. This means it may not be representative of people who work standard hours or travel at night, limiting generalizability.

(a)
1 mark for each feature of clothing described (up to a maximum of 2 marks).
- Eisenhower jacket / jacket (1)
- Old trousers / slacks (1)
- No tie / open shirt (1)

(b)
1 mark for identifying a strength.
1 mark for identifying a weakness.
1 mark for linking either strength or weakness directly to the context of the study (e.g., subway passengers, specific times).

(a) Elephants were trained to perform behaviors such as: "trunk insert" (putting the trunk into a sleeve/bucket), "steady" (holding still), "exhale" (blowing air out), and "trunk accept" (allowing the trunk to be handled).
(b) Secondary positive reinforcement was established by pairing an auditory signal (a "clicker") with a primary reward (food, specifically bananas). Once the click sound became a secondary reinforcer, it was sounded immediately when the elephant performed the desired behavior. This immediate feedback shaped the desired trunk wash sequence step-by-step without using physical punishment.

(a)
1 mark per correct behavior identified (up to a maximum of 2 marks).
- Trunk insert (1)
- Steady / hold still (1)
- Exhale / blow (1)
- Trunk accept (1)

(b)
1 mark for explaining what the secondary reinforcer was (the clicker paired with bananas/food).
1 mark for explaining the timing/how it was used (immediately when behavior was performed).
1 mark for explaining the outcome/shaping (reinforcing progressive steps toward the trunk wash without punishment).

(a) The children were rated by both an experimenter and a nursery school teacher who knew them well. They rated each child on four 5-point scales measuring physical aggression, verbal aggression, aggression toward inanimate objects, and aggressive inhibition.
(b) Matching children on pre-existing aggression controlled for individual differences (participant variables). This ensured that baseline aggression levels were distributed equally across the experimental groups. Consequently, any post-experiment differences in aggression could be confidently attributed to the model they observed rather than their natural aggression levels.

(a)
1 mark for stating who rated them (experimenter and teacher).
1 mark for describing the scales/areas of aggression rated (four 5-point rating scales / physical, verbal, etc.).

(b)
1 mark for identifying the control of participant variables/individual differences.
1 mark for explaining how this applied to the experimental groups (equal baseline distribution).
1 mark for explaining the impact on internal validity (confidently attributing findings to the model's behavior).

(a) Participants were given an A4 sheet with shapes (circles and squares) and a wide margin. They were told to shade in the squares and circles and were explicitly told that it did not matter how neatly or quickly they did it, as it was just a way to relieve the boredom.
(b) Doodling helps maintain arousal by keeping the brain slightly occupied, preventing it from daydreaming (mind-wandering). Daydreaming uses significant cognitive processing resources (specifically the central executive). By restricting the mind from daydreaming, doodling actually preserves cognitive capacity, making it easier to monitor and attend to the main auditory task.

(a)
1 mark for mentioning shading/coloring in the shapes (circles and squares).
1 mark for mentioning the instruction that speed/neatness did not matter or that it was to relieve boredom.

(b)
1 mark for mentioning the maintenance of arousal / prevention of daydreaming.
1 mark for explaining that daydreaming uses significant cognitive/attentional capacity.
1 mark for explaining how preventing daydreaming preserves cognitive resources to focus on the auditory task.

(a) Dream recall was operationalised by waking participants with a doorbell. They then spoke immediately into a tape recorder next to the bed. They stated whether they had been dreaming or not and, if so, described the content. To count as a dream, they had to provide a coherent, detailed description.
(b) Strength: Self-report is the only direct way to access internal, subjective experiences like dreams that cannot be observed objectively via EEG.
Weakness: Participants might suffer from memory decay upon waking (forgetting the dream) or give socially desirable/fabricated answers, reducing the validity of the data.

(a)
1 mark for describing the recording method (doorbell wake-up and speaking into a tape recorder).
1 mark for explaining how dream recall was verified (had to provide a coherent, detailed description, not just a vague feeling).

(b)
1 mark for an appropriate strength (e.g., access to subjective experiences).
1 mark for an appropriate weakness (e.g., social desirability, memory decay).
1 mark for linking either the strength or weakness to the context of dreaming.

(a) Any two of the following:
- Group 1: Adults with Asperger Syndrome (AS) or High-Functioning Autism (HFA).
- Group 2: Normal adult controls (general population).
- Group 3: Adult students (from Cambridge University).
- Group 4: IQ-matched controls (matched with Group 1).
(b) The Revised Eyes Test made several improvements:
- The number of items was increased from 25 to 36.
- The choice of response words was increased from 2 (forced choice) to 4 words.
- A glossary was provided to ensure participants understood all the target and foil words.
- The ratio of male to female eyes was balanced (18 male, 18 female).

(a)
1 mark for each correctly identified group (up to a maximum of 2 marks).
- AS/HFA group (1)
- Normal adult controls (1)
- Student group (1)
- IQ-matched group (1)

(b)
1 mark for each improvement described (up to a maximum of 3 marks).
- Increased number of items (from 25 to 36) (1)
- Increased response options (from 2 to 4) (1)
- Provision of a glossary/definitions (1)
- Balanced male/female faces (1)

(a) Toys were categorized into "masculine" / "wheeled" toys (which included a wagon, truck, and car) and "feminine" / "plush" toys (which included a rag doll, teddy bear, and Winnie the Pooh).
(b) Toy preference was measured by observing the monkeys' behaviors during video recordings. Researchers recorded the duration of interaction (how long they interacted with the toy) and frequency of contacts. Specific coded behaviors included holding, touching, carrying, sniffing, dragging, or actively manipulating the toys.

(a)
1 mark for identifying the two categories (wheeled/masculine vs. plush/feminine).
1 mark for giving examples of toys from each category.

(b)
1 mark for stating that interactions were recorded using duration and frequency.
1 mark for identifying specific behaviors (e.g., holding, touching, sniffing).
1 mark for mentioning that these behaviors were coded from video recordings to determine preference.

(a) Two conditions in Study 1 were the administration of intranasal oxytocin versus a placebo (the treatment condition), or the different types of approach figures (friend, stranger, authority figure, ball).
(b) The CID paradigm was run on a computer. The participant was shown a schematic representation of a room, with their own figure represented in the center. Another figure (e.g., a friend or a stranger) approached them from one of eight angles. The participant had to press the spacebar to stop the approaching figure at the point they began to feel uncomfortable. The remaining distance on the screen was used to calculate the preferred interpersonal distance.

(a)
1 mark for each condition/independent variable level stated (up to a maximum of 2 marks).
- Oxytocin administration (1)
- Placebo administration (1)
- Target type (friend/stranger/authority figure/ball) (1)

(b)
1 mark for describing the schematic computer setup (participant in center, figure approaching).
1 mark for explaining the task (pressing the spacebar when feeling uncomfortable to stop the figure).
1 mark for explaining how the distance was measured (the remaining distance represented the preferred personal space).

(a) **Similarity:**
One similarity is that both studies collected quantitative data. In the study by Piliavin et al., quantitative data was collected by measuring the frequency of help (how many people helped the victim), the speed of help (how long it took for someone to help), and the number of bystanders in the carriage. In the study by Perry et al., quantitative data was collected using the CID (Comfortable Interpersonal Distance) paradigm, which measured the exact physical distance in centimeters that participants preferred to maintain from different figures (e.g., friend, stranger) in a computerized test.

(b) **Difference:**
One difference is the ecological validity of the setting in which the studies were conducted. Piliavin et al. was a field experiment conducted in a highly realistic, natural environment—a New York City subway carriage during a normal transit journey. On the other hand, Perry et al. was a laboratory experiment conducted in a highly controlled, artificial environment, where participants completed computerized tasks and underwent fMRI scans in a laboratory setting.

(c) **Strength of Ecological Validity in Piliavin et al.:**
A major strength of the study by Piliavin et al. is that it took place in a natural environment (the New York subway carriage) where participants were completely unaware that they were being observed (covert observation). Because they did not know they were part of a psychological investigation, they acted entirely naturally. There were no demand characteristics, which are common in laboratory studies where participants might alter their behaviour to appear more helpful or socially desirable. Consequently, the high ecological validity ensures that the recorded helping behaviour is a genuine reflection of how bystanders react in real-world emergencies.

**Part (a): [4 marks maximum]**
- **1 mark** for identifying a similarity (e.g., both collected quantitative data, both investigated social interactions, both used adult samples).
- **1 mark** for describing the similarity in general terms.
- **1 mark** for linking/applying explicitly to the Piliavin et al. study.
- **1 mark** for linking/applying explicitly to the Perry et al. study.

**Part (b): [4 marks maximum]**
- **1 mark** for identifying a difference (e.g., natural vs. laboratory setting, ethical vs. unethical procedures, sample size/composition).
- **1 mark** for describing the difference in general terms.
- **1 mark** for linking/applying explicitly to the Piliavin et al. study.
- **1 mark** for linking/applying explicitly to the Perry et al. study.

**Part (c): [4 marks maximum]**
- **1 mark** for identifying a strength of ecological validity (e.g., natural environment, realistic scenario, lack of demand characteristics due to covert observation).
- **1-3 marks** for explanation/detail of how this strength applies specifically to the Piliavin et al. study.
*Example 4-mark response:* A strength is the lack of demand characteristics due to the natural field setting (1 mark). Because participants on the subway did not know they were being observed, their reactions to the collapsing victim were entirely spontaneous and authentic (1 mark). In a lab, they might have guessed the aim and helped more to look good (1 mark), but the covert observation in the subway carriage ensured high validity of the helping data (1 mark).

To gain high marks (Level 4: 8–10 marks), the response must thoroughly address three evaluation areas: ecological validity, ethics, and one additional issue of the candidate's choice (e.g., reliability, generalizability, or quantitative data). Each point must be explicitly applied to Fagen et al. (elephant learning).

### Key points to include in the solution:

1. **Ecological Validity**
- Explain how the tasks (trunk washing, holding still, responding to verbal commands/whistles) are artificial and do not occur in the wild.
- Mention that the training chute is an unnatural physical constraint.
- Contrast this by noting that the study took place in their usual sanctuary setting in Nepal, which has higher ecological validity than a remote laboratory environment.

2. **Ethics**
- Discuss the ethical benefits of positive reinforcement training (PRT) over traditional, abusive methods (ankus/punishment).
- Highlight the veterinary benefit: training elephants to participate in trunk washing allows for non-invasive testing for tuberculosis, directly benefiting their health.
- Discuss potential ethical costs: captivity, physical confinement in a chute during training, and reliance on food-deprivation/reward structures.

3. **Other Evaluation Issue (e.g., Generalizability / Sample Size)**
- Point out the limitations of the sample: only 5 elephants, all juvenile, and all female.
- Explain why this makes it hard to generalize to male elephants, adult elephants, or different species (African elephants).

### Marking Scheme / Level Descriptors (10 Marks Total)

**Level 4 (8–10 marks)**
- Evaluation of the study by Fagen et al. is detailed, balanced, and coherent.
- Both named issues (ecological validity and ethics) are evaluated in detail.
- One other evaluation issue (e.g., generalizability/sample, reliability, or quantitative data) is evaluated in detail.
- Effective and explicit links to the study are made throughout.

**Level 3 (5–7 marks)**
- Evaluation is good, but may lack balance.
- At least two of the evaluation issues are discussed in detail, or all three are discussed but with limited detail/depth.
- Clear and regular reference to the study is made.

**Level 2 (3–4 marks)**
- Evaluation is basic or limited.
- The response may focus on only one or two issues, or the explanation of the issues is superficial.
- References to the study may be brief, generalized, or absent in parts.

**Level 1 (1–2 marks)**
- The candidate shows very limited understanding of the evaluation issues.
- The response may consist of a simple list of strengths/weaknesses with no explanation or development, or may simply describe the study rather than evaluate it.

**Level 0 (0 marks)**
- No creditable response.

Part (a):
- A longitudinal design is a research method where data is gathered from the same subjects repeatedly over a prolonged period of time.
- In this study, it means tracking the depressive symptoms of patients receiving CBT or SSRIs over months or years to assess sustained improvement.

Part (b):
- Strength: It controls for participant variables since the same individuals are compared against their own baseline over time. It is highly useful for tracking the developmental course of treatment recovery and relapse rates.
- Weakness: Participant attrition (loss of participants over time due to moving, losing interest, or dropping out of treatment) can reduce sample size and result in a highly motivated, unrepresentative final sample.

Part (a) [2 marks]:
- 1 mark for a clear definition of a longitudinal design (studying the same group of participants over time).
- 1 mark for applying this definition to the context of the study (e.g., assessing depression symptoms/CBT over a long period).

Part (b) [3 marks]:
- 1 mark for identifying a valid strength (e.g., tracking long-term effects/development, controlling participant variables).
- 1 mark for identifying a valid weakness (e.g., attrition rate, time-consuming nature, financial cost).
- 1 mark for explicitly contextualising either the strength or weakness to the evaluation of CBT or depression treatment.

Part (a):
- Field experiments take place in the participants' natural environment (the retail store). This maintains natural behavior and increases ecological validity.
- In contrast, a lab experiment would feel artificial, and participants would likely change their purchasing behavior due to demand characteristics.

Part (b):
- Extraneous variables in a retail setting can easily confound results. Controlling factors like background music, layout, time/day of the trial, and seasonal sales is vital. For instance, if the 'lavender' condition is run on a busy Saturday afternoon and the 'no scent' condition on a quiet Monday morning, differences in spending might be due to shopping rush rather than the scent.

Part (a) [2 marks]:
- 1 mark for explaining a feature of field experiments (natural setting/high ecological validity/low demand characteristics).
- 1 mark for applying this to the context of consumer spending/clothing stores.

Part (b) [3 marks]:
- 1 mark for identifying the first extraneous variable.
- 1 mark for identifying the second extraneous variable.
- 1 mark for explaining how at least one of these variables would affect/confound the dependent variable (spending behavior) if left uncontrolled.

Part (a):
- Covert observation means the researcher remains hidden or disguised so that participants do not know their behavior is being monitored.
- In Piliavin et al., the observers blended in as normal passengers on the Harlem to Bronx subway line, keeping their recording pads out of direct view to avoid alerting the public.

Part (b):
- Multiple ethical guidelines were challenged, including informed consent, protection from psychological harm (passengers experienced anxiety/stress seeing the victim collapse), and the right to withdraw.
- Addressing the issue: Retrospective consent can be gained via a debriefing process, though practically challenging on a moving train. Explaining the true nature of the study post-event helps reduce distress and upholds ethical research standards.

Part (a) [2 marks]:
- 1 mark for defining covert observation.
- 1 mark for describing how it was implemented in Piliavin et al. (observers disguised as passengers, taking secret notes).

Part (b) [3 marks]:
- 1 mark for identifying a broken ethical guideline (e.g., informed consent, deception, protection from harm).
- 1 mark for explaining how/why it was broken in the subway context.
- 1 mark for suggesting a realistic and valid remedy (e.g., debriefing, asking for retrospective consent, providing support).

Part (a):
- Fagen et al. used an opportunity sample of 5 juvenile Asian elephants available at the sanctuary in Nepal.
- Limitation: The small sample size and specific background of these elephants make it hard to generalise the effectiveness of PRT to wild elephants or older elephants who might not respond to training in the same way.

Part (b):
- Inter-rater reliability measures the level of agreement between two or more independent raters coding the same behaviors.
- If only one trainer/observer assessed the elephants, they might interpret ambiguous movements as correct out of bias. Multiple raters watching video recordings ensures the operational definitions of success were met strictly.

Part (a) [2 marks]:
- 1 mark for identifying the sampling technique (opportunity/convenience sampling).
- 1 mark for outlining a valid limitation of this technique linked to the elephant sample.

Part (b) [3 marks]:
- 1 mark for defining/explaining inter-rater reliability (independent observers agreeing on scores).
- 1 mark for explaining why it is necessary (reduces observer bias/improves objectivity).
- 1 mark for contextualising to the elephant training behaviors (e.g., training criteria, target positions).

Part (a):
- A Likert scale is a psychometric response scale where responders specify their level of agreement or disagreement on a symmetric agree-disagree scale for a series of statements.
- Example: A statement like 'I found the visual design of the ad appealing' rated from 1 (strongly disagree) to 5 (strongly agree).

Part (b):
- Advantage: Standardised responses allow for high reliability and straightforward statistical comparisons (e.g., finding mean attitude scores). It is quick for participants to complete.
- Disadvantage: Response bias (like acquiescence bias or middle-of-the-road responding) can affect validity. It forces choices that might not accurately represent the consumer's nuanced opinion.

Part (a) [2 marks]:
- 1 mark for defining a Likert scale accurately.
- 1 mark for providing a relevant, contextualised example from the advertising study.

Part (b) [3 marks]:
- 1 mark for a valid advantage of closed questions/Likert scales.
- 1 mark for a valid disadvantage of closed questions/Likert scales.
- 1 mark for linking at least one of these evaluation points directly to the measurement of advertising/consumer attitudes.

Part (a):
- To ensure groups were equivalent in baseline aggression, children were rated on 5-point scales by a teacher and experimenter who knew them well. They were rated on physical/verbal aggression, aggression to inanimate objects, and self-control. They were matched in groups of three and distributed across the experimental conditions.

Part (b):
- Strength: Reduces the impact of individual differences (confounding variables). If all highly aggressive children ended up in the aggressive model group by chance, it would skew the results.
- Limitation: Matching is difficult and requires extensive pre-testing. Inaccurate ratings of baseline aggression could invalidate the matching process.

Part (a) [2 marks]:
- 1 mark for mentioning that children were pre-rated on aggression scales (by teacher/experimenter).
- 1 mark for explaining that they were grouped into similar rating brackets (triplets) and distributed across conditions to balance baseline aggression.

Part (b) [3 marks]:
- 1 mark for a valid strength (e.g., controlling individual differences/reducing participant variables).
- 1 mark for a valid limitation (e.g., time-consuming, difficult matching process, risk of attrition affecting matches).
- 1 mark for applying either point specifically to the measurement of aggression in children.

Part (a):
- Reaction time is ratio level because it is continuous numerical data with equal intervals and an absolute zero. (Accept 'interval' if explained as equal increments of time, but 'ratio' is most precise due to the true zero point).

Part (b):
- Since there are two independent conditions (sleep-deprived vs fully rested) and the data is continuous, the non-parametric equivalent to an independent-samples t-test is the Mann-Whitney U test. It ranks the reaction times of both groups to see if they differ significantly.

Part (a) [2 marks]:
- 1 mark for identifying the level of measurement as ratio (or interval).
- 1 mark for explaining why (continuous numerical scale / equal intervals / has a true zero in milliseconds).

Part (b) [3 marks]:
- 1 mark for identifying the Mann-Whitney U test.
- 1 mark for explaining suitability based on the independent groups/measures design.
- 1 mark for explaining suitability based on the level of data (ranking of continuous/ratio data).

Part (a):
- A positive correlation is a relationship between two variables where both variables move in tandem (same direction).
- In this study, it implies that higher daily stress ratings are associated with higher Y-BOCS scores (more severe symptoms).

Part (b):
- Strength: High ethical feasibility. It is unethical to deliberately induce extreme stress in OCD patients to see if symptoms worsen. Correlation allows natural monitoring.
- Weakness: Bidirectional ambiguity (the third-variable problem). There is no independent variable manipulation, so we cannot establish direction of causality.

Part (a) [2 marks]:
- 1 mark for explaining a positive correlation (both variables increase/decrease together).
- 1 mark for applying this directly to stress levels and Y-BOCS scores/symptom severity.

Part (b) [3 marks]:
- 1 mark for identifying a valid strength of correlations (ethical advantage, ease of study, looks at natural relationships).
- 1 mark for identifying a valid weakness of correlations (lack of cause-and-effect / third variable problem).
- 1 mark for contextualising either point to OCD and daily stress levels.

(a)
- **Independent Variable (IV):** The color of the ambient background lighting (blue or red).
- **Dependent Variable (DV):** The time spent browsing the e-commerce website.

(b)
- **Control:** To ensure that only the independent variable affects the DV, Dr. Aris must control potential confounding variables. For example, ensuring every participant uses the exact same model of computer/tablet, with identical screen brightness, in a room with identical seating comfort and no external noise distractions.

(c)
- **Justification for Lab Experiment:** A laboratory setting allows Dr. Aris to eliminate or minimize situational variables (like unexpected pop-ups, background conversations, or varying natural light) that could happen in a natural field environment (like a real store or home environment). By keeping these external distractions constant, Dr. Aris can more confidently establish a direct cause-and-effect relationship (high internal validity) between the lighting color and the browsing duration.

(a) [2 marks total]
- 1 mark for identifying the independent variable: color of ambient background lighting (blue vs. red).
- 1 mark for identifying the dependent variable: time spent browsing the e-commerce website (must imply measurement of time).

(b) [1 mark total]
- 1 mark for identifying/describing an appropriate control (e.g., standardizing the device used, the brightness of the screen, the layout of the website, or the ambient temperature of the room).

(c) [2 marks total]
- 1 mark for stating a feature of a laboratory experiment (e.g., higher control over extraneous variables, standardized procedure).
- 1 mark for explaining this in the context of the study (e.g., controlling distractions like external noise, ensuring confidence that the background lighting color alone caused the change in browsing time / high internal validity).

For part (a), the answer must detail a field experiment layout including: - Independent variable (IV): temperature levels (e.g., 18 degrees vs 24 degrees Celsius) - Dependent variable (DV): operationalised measurement of time spent (minutes) - Experimental design: independent measures with justification - Control variables: lighting, music, same seat options - Sampling: opportunity sample of customers - Procedure: step-by-step detail of temperature control, timing, and covert observation to avoid demand characteristics. For part (b), the evaluation must identify and explain: - One reliability issue: e.g., the challenge of standardising temperature throughout the entire room due to doors opening, or the high standardisation of using a digital thermostat. - One ethical issue: e.g., lack of informed consent due to covert field observation, balanced by the lack of harm and public nature of the setting.

Part (a) [10 marks]: 1-2 marks: Plan is highly basic with minimal details, lacking key experimental controls. 3-4 marks: Plan has some details but has major omissions or lacks clarity in how variables are measured. 5-6 marks: Plan is reasonable with clear IV and DV, but lacks specific details on controls or sampling. 7-8 marks: Plan is good, clearly describing a field experiment with appropriate controls, sampling, and standardized procedures in the coffee shop context. 9-10 marks: Plan is detailed, highly feasible, replicable, and addresses all major methodological aspects (IV, DV, controls, sample, ethics, and specific details of temperature settings). Part (b) [4 marks]: For each point (one reliability, one ethical): 1 mark: Identifies a relevant strength or limitation of the planned study. 2 marks: Explains the strength or limitation clearly in the context of the coffee shop temperature study.

The explanation must clearly outline Beck's cognitive triad: negative views of the self, the world, and the future. Candidates should show how these three aspects interact and are underpinned by negative cognitive schemas/distortions to explain the onset and maintenance of unipolar depression.

4 marks: Detailed, accurate, and coherent description showing complete understanding of Beck's cognitive triad, including all three components (self, world, future) and explaining how they interact to maintain/cause depression.
3 marks: Good description of the triad, though it may lack minor detail or fail to explicitly connect how it relates to broader cognitive schemas or distortions.
2 marks: Partial description, identifying at least two components of the triad accurately.
1 mark: Very basic or vague response (e.g., just mentioning 'negative thoughts' generally or naming only one component).

Candidates need to describe how genetic factors contribute to OCD. They should outline genetic transmission (heritability), cite empirical evidence from family or twin studies (using terms like concordance rates), and reference specific candidate genes (e.g., SERT, COMT) and their impact on neurochemistry.

4 marks: Detailed, accurate, and coherent description of genetic explanations of OCD, including evidence from twin/family studies (ideally with concordance details) and identifying specific candidate genes (e.g., SERT, COMT).
3 marks: Good description of genetic factors with minor omissions (e.g., explains twin/family studies well but fails to name specific genes or vice-versa).
2 marks: Outlines genetic factors generally (e.g., states it is inherited and runs in families, mentioning twin studies but without scientific detail).
1 mark: Very basic outline (e.g., 'it is passed down in families').

The description must include the theoretical basis of systematic desensitisation (classical conditioning and reciprocal inhibition) and explicitly outline the three sequential phases of the therapy: relaxation training, building an anxiety hierarchy, and gradual exposure/extinction.

4 marks: Accurate and comprehensive description of the three main phases of systematic desensitisation (relaxation, hierarchy construction, gradual exposure) along with the underlying theoretical principle (reciprocal inhibition/classical conditioning).
3 marks: Good description of the phases, but may lack detail on the theoretical mechanism or omit/under-explain one of the key steps.
2 marks: General description of exposure and relaxation, or identifies the steps but fails to explain how they function together in a therapeutic context.
1 mark: Very limited understanding (e.g., 'you make them face their fear step by step').

Candidates must define the category of 'external variables' according to Turley and Milliman (2000) (e.g., storefront, window displays, entrances) and explain how these cues influence consumer decisions (e.g., driving store entry, forming expectations, triggering approach/avoidance behavior).

4 marks: Detailed explanation that accurately defines external variables with relevant examples (e.g., window displays, storefront) and clearly explains how these variables influence consumer behavior (e.g., approach/avoidance, brand image perception).
3 marks: Good explanation containing correct examples and some link to consumer behavior, but lacks detail or conceptual depth.
2 marks: Identifies external variables correctly but provides only a weak or vague link to how they influence behavior.
1 mark: Superficial response (e.g., 'stores have signs outside to get people to come in').

The explanation must cover the hierarchy of effects model. It should list all six steps in correct sequential order (Awareness, Knowledge, Liking, Preference, Conviction, Purchase) and group them into the three main stages: cognitive (thinking), affective (feeling), and conative/behavioural (doing).

4 marks: Clear and accurate description of all six steps in the correct sequence, explicitly mapped to or indicating understanding of the three overarching stages (cognitive, affective, conative).
3 marks: Identifies most of the six steps in order but may omit the broader stage groupings (cognitive/affective/conative) or miss one step.
2 marks: Identifies some steps or stages out of sequence or with significant omissions.
1 mark: Basic mention of some advertising effects (e.g., 'it makes you aware and then you buy it').

Candidates should describe the methodologies used by Mackay and Olshavsky (1975) to map consumer perception of supermarket layouts (hand-drawn maps vs. multidimensional scaling based on distance judgments) and explain how these maps are used to understand/predict consumer behavior.

4 marks: Highly detailed and accurate description of both measurement techniques (graphic map drawing and multidimensional scaling) and a clear explanation of what the study found or how these maps are used to understand consumer behavior.
3 marks: Good description of both techniques, but lacks depth in explaining the findings or how they are used, OR describes one technique in detail with correct findings.
2 marks: Identifies both techniques but fails to explain them adequately, or only explains hand-drawn maps.
1 mark: Very general comment about cognitive maps or shopping layouts without specific reference to the study's details.

### Part (a) Suggested Content:

Candidates should describe the following explanations of obsessive-compulsive and related disorders:
- **Biomedical/Biochemical:** Focuses on neurotransmitters like serotonin. Insufficient serotonin levels in the synaptic cleft prevent normal transmission of impulses, leading to obsessive thoughts. Genetic explanations suggest a hereditary link (e.g., studies finding higher concordance rates in monozygotic twins compared to dizygotic twins, or candidate genes like hSERT).
- **Cognitive and Behavioural:** Cognitive explanations suggest that sufferers have faulty thinking patterns (cognitive distortions), such as overestimating threats or responsibility. Behavioural explanations explain compulsive behaviours via operant conditioning (specifically negative reinforcement): performing the compulsion reduces the anxiety caused by the obsession, which reinforces the compulsion.
- **Psychodynamic:** Explains OCD as arising from conflicts in the anal stage of psychosexual development. The ego struggles to handle the conflict between the id (aggressive/soiling impulses) and the superego (strict moral demands). Defense mechanisms like regression, isolation of affect, and reaction formation (e.g., extreme cleanliness to combat impulses to be messy) are utilized to manage the anxiety.

### Part (b) Suggested Content:

Candidates should evaluate these explanations, addressing the specific issue of **nature versus nurture**:
- **Nature vs. Nurture:** Biomedical explanations represent the 'nature' side, attributing OCD to genetic mutations or neurotransmitter imbalances. Conversely, behavioural explanations represent 'nurture', arguing that compulsions are learned through environmental conditioning. Cognitive explanations can be seen as an interaction, where biological predispositions may interact with learned cognitive biases.
- **Reductionism vs. Holism:** Biomedical explanations are reductionist as they simplify complex behaviors to chemical or genetic processes, whereas cognitive/behavioural explanations consider thinking patterns and environmental interactions.
- **Determinism vs. Free Will:** Biological and psychodynamic explanations are highly deterministic, suggesting individuals have little control over their biological makeup or unconscious conflicts. Cognitive approaches offer more room for free will (e.g., through active cognitive restructuring).
- **Scientific Status / Testability:** Biological explanations are highly objective and testable (e.g., using genetic screening or PET scans), whereas psychodynamic concepts (the id, ego, and superego) are virtually impossible to operationalise or empirically test.

**Part (a): [8 marks]**
- **7-8 marks:** Clear, accurate, and detailed description of all three explanations (biomedical, cognitive-behavioural, psychodynamic). Well-structured and coherent use of psychological terminology.
- **5-6 marks:** Good description of the explanations, though perhaps lacking in detail in one of the explanations. Mostly accurate with good use of terminology.
- **3-4 marks:** Basic description. May focus only on one or two explanations, or descriptions are superficial and lack detail.
- **1-2 marks:** Very limited or confused description. Terminology is poorly used or absent.
- **0 marks:** No creditworthy response.

**Part (b): [8 marks]**
- **7-8 marks:** Thorough evaluation. Strong, balanced discussion of several evaluative points, explicitly including a well-focused debate on nature versus nurture. High-level analysis and structured arguments.
- **5-6 marks:** Good evaluation with clear discussion of nature versus nurture and at least one other point (e.g., reductionism). Balanced, but may lack depth in some arguments.
- **3-4 marks:** Basic evaluation. Mention of nature versus nurture is brief or superficial. Arguments are weak or descriptive rather than evaluative.
- **1-2 marks:** Very limited evaluation, lacking focus on the required debate. Descriptive rather than evaluative.
- **0 marks:** No creditworthy response.

### Part (a) Suggested Content:

Candidates should describe key concepts and studies related to store interior layouts and design:
- **Store Layout Types:**
- **Grid layout:** Typically used in supermarkets. Highly structured, aisles are parallel to each other. Optimizes floor space, encourages efficient shopping, but limits impulse buying as shoppers follow predictable routes.
- **Freeform (or Boutique) layout:** Asymmetrical arrangements of displays and aisles. Promotes browsing, creates a relaxed, high-end shopping atmosphere, and increases impulse purchases, though it is less space-efficient.
- **Racetrack (or Loop) layout:** Guides customers along a set, circular pathway through the store, exposing them to a maximum number of products (commonly used in department stores or IKEA).
- **Shelf Placement and Product Display:**
- Eye-level placement ('eye level is buy level') where premium brands are placed at standard adult eye height.
- Kids' eye-level placement for toys and sugary cereals.
- Bottom-shelf placement for bulk or budget items.
- Psychologists (e.g., research on visual attention and gaze tracking) show that central positioning on a shelf increases the likelihood of selection.

### Part (b) Suggested Content:

Candidates should evaluate these discoveries, specifically addressing the **use of quantitative versus qualitative data**:
- **Quantitative vs. Qualitative Data:**
- **Quantitative:** Much of the research in retail design relies on quantitative metrics (e.g., sales revenue, time spent in store, number of items purchased, eye-tracking duration). This allows for objective, statistical analysis and easy comparison across different store layouts. However, it fails to explain *why* consumers behave the way they do.
- **Qualitative:** Interviews, verbal protocols, or open-ended questionnaires can capture consumers' feelings, mood, and subjective experience of the store's atmosphere (e.g., feeling rushed in a grid layout vs. relaxed in a freeform layout). However, this data is subjective, harder to generalise, and open to social desirability bias.
- **Application to Daily Life (Utility):** Extremely high practical utility for retailers and store planners to maximize profits and manipulate consumer movement.
- **Methodological Issues:** Field experiments in real supermarkets have high ecological validity but lack control over extraneous variables (e.g., density of crowds, time of day). Lab simulations or virtual reality store environments have high control but lack realism.
- **Determinism:** Layouts are designed to deterministically direct consumer choice (e.g., the Gruen effect or racetrack force-routing), raising ethical questions about consumer manipulation.

**Part (a): [8 marks]**
- **7-8 marks:** Clear, accurate, and detailed description of store interior layouts (grid, freeform, racetrack) and shelf placement strategies. Structured, coherent, and uses psychological terminology accurately.
- **5-6 marks:** Good description of layouts and shelf placement. May lack detail or fail to cover all three layout types comprehensively, but is mostly accurate.
- **3-4 marks:** Basic description. Focuses on only one layout type or describes layouts in general terms without psychological substance.
- **1-2 marks:** Very limited or confused description. Lacks detail and terms are poorly understood.
- **0 marks:** No creditworthy response.

**Part (b): [8 marks]**
- **7-8 marks:** Thorough evaluation. Balanced discussion of several evaluative points, with a sophisticated focus on quantitative vs. qualitative data in retail research. Well-structured arguments.
- **5-6 marks:** Good evaluation. Discusses quantitative vs. qualitative data clearly alongside another issue (e.g., ecological validity or usefulness). Balanced but may lack depth in some areas.
- **3-4 marks:** Basic evaluation. Mention of quantitative/qualitative data is brief or descriptive. Arguments are weak.
- **1-2 marks:** Very limited evaluation, fails to address the quantitative vs. qualitative distinction effectively.
- **0 marks:** No creditworthy response.

a) Bipolar disorder is characterized by extreme fluctuations in mood, consisting of alternating episodes of mania (elation, high energy, rapid speech) and depression (low mood, lethargy, feelings of worthlessness).

b) Oruc et al. (1997) conducted genetic testing on 42 patients with bipolar disorder and 40 healthy control participants. They analyzed polymorphisms in the serotonin transporter (5-HTT) gene and dopamine receptor (DRD4) genes. While no overall statistically significant genetic linkage was found across the entire sample, a potential genetic association was suggested for females, where specific variations in the 5-HTT gene were more common in female bipolar patients compared to female controls.

c) Strength: High internal validity and scientific objectivity due to the use of genetic testing/DNA analysis, which prevents subjective interpretation or bias.
Weakness: Small sample size (42 patients, 40 controls) and potential confounding variables, as many patients had first-degree relatives with affective disorders, meaning environmental factors (e.g., shared family environment) could not be completely isolated from genetic factors.

Part (a) [2 marks]:
- 1 mark for a basic definition (e.g., mood swings or alternating highs and lows).
- 2 marks for a detailed explanation highlighting both manic (elevated/manic) and depressive phases.

Part (b) [4 marks]:
- 1 mark: Identifies the genetic focus (specifically the serotonin transporter gene 5-HTT or dopamine receptor genes DRD4).
- 2 marks: Mentions the sample/comparison (bipolar patients versus healthy controls, many with first-degree relatives with affective disorders).
- 3 marks: Explains the methodology (DNA/blood testing, looking for genetic polymorphisms/linkages).
- 4 marks: Outlines the main finding (no overall significant differences, but a potential genetic susceptibility/variation in the 5-HTT gene in female patients).

Part (c) [3 marks]:
- 1 mark: Outlines a clear, contextualized strength (e.g., scientific objectivity of DNA profiling).
- 1 mark: Outlines a clear, contextualized weakness (e.g., small sample size or confounding environmental factors).
- 1 mark: Provides detailed elaboration of either the strength or weakness in direct relation to Oruc et al.'s research.

a) The Kranes model, also known as the playground casino design, focuses on creating a restorative environment. Unlike traditional layout designs, it uses high ceilings, natural elements (like plants and water features), and an easy-to-navigate open space layout to lower the gambler's psychological tension.

b) Finlay et al. (2006) gathered a sample of casino-goers and exposed them to video simulations of different casino designs (both Kranes/playground layouts and Friedman/traditional layouts). To assess the psychological impact of these environments, they utilized self-report questionnaires based on the Pleasure-Arousal-Dominance (PAD) framework to measure emotional responses, alongside specific scales rating participants' behavioral intentions, such as their desire to stay and gamble in that specific design.

c) Strength: High control over environmental variables by utilizing standardized virtual representations, reducing the risk of confounding factors interfering with participants' immediate emotional assessments.
Weakness: Artificial laboratory environment (low ecological validity), as watching a video simulation does not mimic the multisensory stimulation and financial risk of actual physical gambling, potentially biasing self-reported gambling intentions.

Part (a) [2 marks]:
- 1 mark for basic definition (e.g., design with plants, fountains, open space).
- 2 marks for a detailed explanation highlighting its restorative/playground nature and goal (to make people feel relaxed and comfortable so they stay/gamble).

Part (b) [4 marks]:
- 1 mark: Identifies the use of casino simulations (video or image representations of Kranes vs. Friedman designs).
- 2 marks: Mentions the participants (experienced gamblers/casino-goers).
- 3 marks: Explains how emotional states were measured (using self-reports/PAD scale assessing pleasure, arousal, dominance).
- 4 marks: Explains how behavioral intentions (desire to stay and gamble) were measured.

Part (c) [3 marks]:
- 1 mark for a clear strength (e.g., high control over extraneous variables using video simulations).
- 1 mark for a clear weakness (e.g., low ecological validity compared to real-life gambling environments).
- 1 mark for elaboration/contextualization of either point to the Finlay et al. study.

a) Brand heritage is a multi-dimensional concept in marketing that represents a brand's history, longevity, core values, and cultural legacy. It serves to build consumer trust, credibility, and brand equity by connecting the present-day product to its reliable past.

b) Merchant et al. (2013) used online surveys to explore the connection between brand heritage, emotional responses, and consumer behavioral outcomes. Adult participants were asked to evaluate heritage-based advertisements. The researchers measured key variables: perceived brand heritage, historical and personal nostalgia, positive emotions (such as warmth and affection), and purchase intentions. Their statistical modeling revealed that perceived brand heritage triggers historical and personal nostalgia, which acts as a mediator to generate positive emotional attachment, thereby directly increasing purchase intentions.

c) Strength: High practical utility for advertisers, demonstrating a clear mechanism of how nostalgic appeals based on history can be converted into consumer loyalty and purchase choices.
Weakness: Reliance on self-report surveys introduces biases, such as social desirability or inaccurate recall of emotional experiences, meaning purchase intentions may not reliably translate into actual real-world purchasing behavior.

Part (a) [2 marks]:
- 1 mark for a basic explanation of brand heritage (e.g., a brand's history and track record).
- 2 marks for a detailed explanation including its purpose (e.g., evoking nostalgia and trust).

Part (b) [4 marks]:
- 1 mark: Identifies the use of survey/questionnaire methodology with adult consumers.
- 2 marks: Explains the variables measured (brand heritage perception, personal/historical nostalgia, positive emotions, purchase intentions).
- 3 marks: Describes how the relationship between these variables was modeled (heritage triggers nostalgia, which triggers positive emotions).
- 4 marks: Outlines the key finding (heritage significantly increases purchase intentions and brand loyalty through these emotional pathways).

Part (c) [3 marks]:
- 1 mark for a clear strength (e.g., high application to advertising strategies).
- 1 mark for a clear weakness (e.g., social desirability or discrepancy between intentions and actual behavior in self-reports).
- 1 mark for elaboration/contextualization of either point to the Merchant et al. study.

a) The cognitive explanation argues that phobias are not just learned through association but are driven by irrational thoughts, catastrophizing, and cognitive biases. The individual expects a negative outcome or harm to occur when exposed to the phobic stimulus, reinforcing their avoidance.

b) Di Nardo et al. (1988) investigated cynophobia (fear of dogs) in a sample of female college students, comparing a fearful group with a non-fearful control group. Crucially, participants in both groups had experienced similar past conditioning events (e.g., being bitten or chased by a dog). Through structured interviews, the researchers found that despite having similar past conditioning histories, only the fearful group maintained a strong expectation that future encounters with dogs would result in personal harm. This demonstrated that a person's cognitive appraisal and expectation of danger, rather than the conditioning event itself, is the primary factor in sustaining the phobia.

c) Strength: High internal validity because it compared individuals with similar past traumatic encounters (holding the conditioning variable constant), enabling researchers to clearly isolate cognitive expectations of harm as the crucial factor.
Weakness: Sample bias, as the study used exclusively female university students. Fear responses, risk assessments, and cognitive processing of animal encounters may differ in males, limiting the generalizability of the findings.

Part (a) [2 marks]:
- 1 mark for a basic explanation (e.g., phobias are caused by thinking patterns).
- 2 marks for a detailed explanation including cognitive appraisal/biases or expectations of harm.

Part (b) [4 marks]:
- 1 mark: Identifies the sample comparison (cynophobics/fearful vs. non-fearful individuals, both having experienced painful/frightening encounters with dogs).
- 2 marks: Mentions the use of interviews/self-reports to measure past experiences and cognitive expectations of harm.
- 3 marks: Outlines key results (both groups had similar rates of negative past encounters/conditioning).
- 4 marks: Outlines the main cognitive conclusion (fearful group had significantly higher expectations of harm/bite, showing cognitive appraisal is crucial).

Part (c) [3 marks]:
- 1 mark for a clear strength (e.g., high validity by isolating the role of cognition from simple conditioning).
- 1 mark for a clear weakness (e.g., gender bias/sample of only females, or reliance on retrospective self-reports).
- 1 mark for elaboration/contextualization of either point to the study of cynophobia by Di Nardo et al.

Part (a) Suggested Study Design:
- Method: A field experiment conducted in an active local bookstore.
- Experimental Design: Independent measures design. For the first two weeks, the store is arranged in a traditional grid layout (straight aisles, rectangular pattern). For the subsequent two weeks, the store is rearranged into a freeform layout (curved pathways, informal groupings, angled displays).
- Independent Variable (IV): The type of store layout (Grid layout vs. Freeform layout).
- Dependent Variables (DVs):
1. Time spent in the store: Measured in minutes and seconds by an observer reviewing CCTV footage, tracking individual shoppers from entry to exit.
2. Number of impulse purchases: Measured by asking shoppers upon exit to complete a quick digital checklist of items they intended to buy before entering. This is compared against their final purchase receipt. Any item bought that was not on their original mental/written list is counted as an impulse purchase.
- Sample: An opportunity sample of 120 shoppers (60 per layout condition) who consent to have their receipts reviewed and complete a brief 1-minute exit survey in exchange for a coupon.
- Controls: The range of products, pricing, lighting, background music playlist, and staff working hours are kept identical across both conditions to ensure that atmospherics other than layout do not confound results.
- Ethics: Participants are debriefed at the exit point when approached for the survey, and their consent is obtained to use their anonymous tracking data and receipt information.

Part (b) Psychological and Methodological Explanation:
- Methodological Evidence:
- Field Experiment: Conducted in a real-world setting, maximizing ecological validity. Shoppers exhibit authentic browsing behavior compared to a simulated lab environment.
- Reliability and Validity: Measuring time via CCTV avoids self-report bias (retrospective estimation of time is notoriously inaccurate). Comparing receipts to a declared pre-entry list provides an objective, operationalised measure of 'impulse purchasing' rather than relying on subjective participant self-assessment.
- Extraneous Variables: Individual differences (e.g., shopping motivation, budget) are a threat in independent measures, which is mitigated by having a large sample size.
- Psychological Evidence:
- Retail Architecture: Grid layouts are highly predictable and efficient, allowing goal-directed shoppers to locate items quickly, reducing browsing time. Freeform layouts encourage exploration, exposing consumers to more visual stimuli and visual merchandising, which increases the likelihood of unplanned (impulse) purchases.
- Mehrabian and Russell's (1974) PAD Model: A freeform layout can increase 'arousal' and 'pleasure' due to its novelty and aesthetic appeal, promoting 'approach behaviors' such as longer dwell times and increased spending, whereas a grid layout may facilitate low-arousal, task-oriented 'avoidance' behaviors (leaving as soon as the target item is acquired).

Part (a) [10 marks]
- 9-10 marks: Design is highly detailed, appropriate, and fully operationalised. The IV, both DVs (time spent and impulse purchases), sampling, controls, and procedure are clearly described within a realistic field experiment scenario.
- 7-8 marks: Design is good and covers most of the key aspects, but may lack detail in one area (e.g., how impulse purchases are operationalised, or specific control variables).
- 5-6 marks: Design is appropriate but basic. Some elements of the methodology are vague or unrealistic.
- 3-4 marks: Outlines a basic study with significant omissions. Weak understanding of field experimental design.
- 1-2 marks: Very simple design with minimal detail; lacks psychological/methodological coherence.

Part (b) [14 marks]
- 12-14 marks: Excellent, balanced explanation. Evaluation shows mature understanding of both methodological issues (e.g., field experiment strengths/weaknesses, ecological validity, operationalisation of variables) and relevant psychological theory (e.g., store layout styles, environmental psychology, shopper behavior models).
- 9-11 marks: Good explanation of both methodological and psychological concepts. Some minor points may lack depth or details could be more tightly integrated.
- 5-8 marks: Basic evaluation. May focus heavily on methodology while neglecting psychological theory (or vice versa), or lacks specific reference to the study designed in part (a).
- 1-4 marks: Anecdotal or highly limited evaluation, showing little understanding of research methodology or consumer psychology.