2025 IB DP Psychology 模擬試題連答案詳解

Hormones are chemical messengers secreted by the endocrine glands directly into the bloodstream, which can produce widespread and long-lasting effects on human behaviour. One hormone that significantly influences human behaviour is cortisol, a glucocorticoid produced by the adrenal cortex in response to stress. Cortisol is known to influence cognitive processes, particularly verbal declarative memory (the ability to recall facts and events in words).

When an individual experiences stress, the hypothalamic-pituitary-adrenal (HPA) axis is activated, resulting in the secretion of cortisol. Cortisol travels to the brain, where it binds to glucocorticoid receptors highly concentrated in the hippocampus—a brain structure critical for the consolidation of declarative memory. While acute, moderate levels of cortisol can enhance memory consolidation, chronic or high levels of cortisol have been shown to impair the retrieval and consolidation of verbal declarative memory by disrupting hippocampal synaptic plasticity.

To investigate this relationship, Newcomer et al. (1999) conducted a double-blind, randomized controlled experiment. The researchers aimed to determine whether high levels of cortisol would decrease performance on a verbal declarative memory task. The sample consisted of healthy clinical participants who were split into three groups: Group 1 (high cortisol) received a tablet containing 160 mg of cortisol each day for four days, simulating the cortisol levels observed in major stress events. Group 2 (low cortisol) received 40 mg of cortisol per day, simulating a mild stress reaction. Group 3 (placebo) received an inactive tablet.

All participants took part in a verbal declarative memory task, which involved listening to and recalling a prose paragraph at multiple intervals. The results showed that participants in the high-cortisol group (Group 1) performed significantly worse on the prose recall task compared to both the low-cortisol group and the placebo group. Their performance returned to normal after they stopped taking the cortisol tablets, demonstrating that the impairment was temporary.

This study demonstrates how the hormone cortisol directly influences verbal declarative memory. By artificially elevating cortisol levels to match physiological stress states, the researchers established a causal link showing that high levels of the stress hormone impair the cognitive process of memory recall. This occurs because excess cortisol over-activates glucocorticoid receptors in the hippocampus, temporarily disrupting the neural pathways required for memory retrieval.

Marks are awarded using the official IB Psychology SAQ rubric (9 marks total):

**7–9 marks**: The response is well-focused on the question, demonstrating precise and accurate knowledge of how one hormone (e.g., cortisol) influences one specific behaviour (e.g., verbal declarative memory). The student accurately describes a relevant study (e.g., Newcomer et al., 1999), outlining its aim, method, results, and conclusion. There is a clear, explicit explanation of the link between the study and the biological mechanism (how cortisol affects hippocampal function and memory).

**4–6 marks**: The response is mostly focused on the question but contains minor gaps or inaccuracies in explaining the hormone's mechanism or details of the study. The connection between the biological process and the behaviour is described but lacks deep analysis or clarity.

**1–3 marks**: The response shows limited understanding of the topic. The description of either the hormone or the study is highly incomplete, inaccurate, or missing completely.

**0 marks**: The response does not meet any of the criteria above.

*Examiner Note:* If a student describes more than one hormone or more than one study, only the first hormone/study should be graded unless the second is used to directly support the primary claim.

Schema theory is a cognitive theory that suggests our memory, perception, and interpretation of the world are guided by 'schemas'—pre-existing, active mental frameworks of knowledge, beliefs, and expectations about objects, people, and situations. Developed from the work of Frederic Bartlett, schema theory posits that instead of storing exact copies of experiences, humans engage in active reconstruction of memory. We use schemas to simplify cognitive processing (top-down processing) by filling in gaps in our environment, though this can also lead to systematic cognitive distortions and memory errors.

One study that illustrates the influence of schemas on memory retrieval is the laboratory experiment conducted by Brewer and Treyens (1981). The study aimed to investigate whether a person's schema of an office would affect their memory for the objects present in an office setting.

The participants were asked to wait in an office-like room for approximately 35 seconds. The room contained a mix of schema-consistent objects typical of an office (e.g., a desk, calendar, typewriter) and schema-inconsistent objects (e.g., a skull, a picnic basket). There were also key schema-consistent objects intentionally left out of the room (such as books). After the waiting period, participants were moved to another room and asked to recall the objects they had seen in the office using one of three retrieval methods: written recall, drawing, or recognition.

The results revealed that when using free recall or drawing, participants were highly likely to remember objects that were congruent with their 'office schema' (such as the desk and chairs), even if those objects were not actually present. For example, many participants falsely recalled seeing books in the office. Furthermore, many participants failed to recall highly unusual, schema-inconsistent objects like the skull, though when asked via a recognition checklist, recognition of unusual items was high but accompanied by high rates of false-positive office items.

This study supports schema theory by demonstrating that memory is a reconstructive process rather than a passive recording. During retrieval, when participants could not fully remember the exact details of the room, they relied on their pre-existing mental frameworks (their office schema) to reconstruct the scene. This led to schema-consistent memory distortions, such as inventing books that were never there, illustrating how schemas actively organize and bias our cognitive retrieval processes.

Marks are awarded using the official IB Psychology SAQ rubric (9 marks total):

**7–9 marks**: The response provides a precise and detailed definition of schema theory, highlighting its features (e.g., mental frameworks, reconstructive memory, top-down processing). A relevant study (e.g., Brewer and Treyens, 1981) is accurately and clearly described, detailing the method, results, and implications. There is a robust, well-developed explanation linking the study's results (e.g., false recall of books) directly to the mechanisms of schema theory.

**4–6 marks**: The response demonstrates a basic understanding of schema theory and describes a relevant study, but contains minor inaccuracies or lacks detail in the connection between the study and the theoretical concepts.

**1–3 marks**: The response is limited, showing superficial knowledge of schema theory. The study is poorly described or lacks relevance to schemas.

**0 marks**: The response does not meet any of the criteria above.

Social Cognitive Theory (SCT), proposed by Albert Bandura, suggests that humans learn behaviour through observational learning—by watching others (models) and imitating their actions. Unlike strict behaviourism, SCT highlights the importance of cognitive mediational processes that occur between the stimulus (observing the model) and the response (imitation). These four cognitive factors are: attention (noticing the behaviour), retention (remembering the observed behaviour), reproduction (having the physical and mental capacity to perform the behaviour), and motivation (having a reason or incentive to imitate, often influenced by vicarious reinforcement or identification with the model).

To investigate how observational learning occurs, Bandura, Ross and Ross (1961) conducted a laboratory experiment on young children. The aim was to see if children would imitate physical and verbal aggression modeled by an adult, and to see if the gender of the model influenced the likelihood of imitation.

The researchers selected 72 children (aged 3 to 6) and split them into three major groups. Group 1 observed an adult model acting aggressively towards an inflated 'Bobo doll' (e.g., hitting it with a mallet, throwing it in the air, and shouting aggressive phrases like 'Sock him in the nose!'). Group 2 observed a non-aggressive model who quietly played with toys and ignored the Bobo doll. Group 3 acted as a control group and observed no model. Afterward, all children were subjected to mild 'aggression arousal' (being told they could not play with the best toys) before being placed in a room with a Bobo doll and other toys, where their behaviour was observed through a one-way mirror.

The findings showed that children who observed the aggressive model (Group 1) exhibited significantly more physical and verbal imitative aggression than those in the non-aggressive or control groups. Furthermore, children were more likely to imitate same-sex models, indicating a higher level of identification with the model, which enhanced their motivation to copy the behaviour.

This study directly supports Social Cognitive Theory by demonstrating that behaviour can be acquired through mere observation without direct conditioning or immediate reinforcement. The children paid attention to the model's novel actions, retained the cognitive representation of these actions, possessed the motor skills to reproduce them, and felt motivated to execute the physical and verbal aggression when placed in a similar situation, thus illustrating Bandura's proposed mediational processes.

Marks are awarded using the official IB Psychology SAQ rubric (9 marks total):

**7–9 marks**: The response clearly explains the core components of Social Cognitive Theory (e.g., observational learning, modeling, and the four mediational processes: attention, retention, reproduction, motivation). The student accurately describes a relevant study (e.g., Bandura et al., 1961), outlining the method, results, and conclusions. There is a strong, explicit link explaining how the study's findings demonstrate the cognitive processes behind observational learning.

**4–6 marks**: The response shows a general understanding of Social Cognitive Theory and describes a relevant study, but details may be vague or the description of the four cognitive processes may be omitted or incomplete.

**1–3 marks**: The response lacks focus or contains major inaccuracies. It fails to adequately explain the theoretical framework of Social Cognitive Theory or provides a highly superficial overview of the study.

**0 marks**: The response does not meet any of the criteria above.

### Essay Outline & Guidance

#### 1. Introduction
- **Define the terms**:
- **Agonist**: A chemical substance that binds to a receptor site of a neuron and stimulates a response, mimicking or enhancing the action of a neurotransmitter (can be endogenous, like neurotransmitters themselves, or exogenous, like drugs/SSRI-type medications).
- **Antagonist**: A chemical substance that binds to a receptor site and blocks or dampens a biological response, preventing neurotransmitters from binding and activating the receptor.
- **Significance**: Understanding agonists and antagonists helps psychologists understand how specific neurotransmitters influence human cognitive processes and behaviours, such as memory consolidation, spatial navigation, or prosocial behaviour.
- **Thesis Statement**: Agonists and antagonists play a critical role in modulating neurotransmitter pathways, which directly impacts human behaviour. However, investigating these effects in humans presents methodological and ethical challenges that must be evaluated.

#### 2. Key Biological Mechanisms
- Explain the process of neurotransmission: action potential, release of neurotransmitters into the synaptic cleft, binding to post-synaptic receptors.
- Describe how **agonists** (e.g., acetylcholine, citalopram as an indirect agonist/SSRI) increase the activity of a neurotransmitter system.
- Describe how **antagonists** (e.g., scopolamine blocking acetylcholine receptors) decrease or block neurotransmitter activity.

#### 3. Empirical Research Study 1: The Role of an Antagonist on Memory
- **Study**: *Antonova et al. (2011)*
- **Aim**: To investigate the effect of acetylcholine receptor blockage (using the antagonist scopolamine) on spatial memory tasks in humans.
- **Method**: Double-blind, placebo-controlled, repeated-measures design. Male participants were injected with either scopolamine (an acetylcholine antagonist) or a placebo before performing a virtual reality "Arena task" (navigating a maze) while undergoing an fMRI scan.
- **Findings**: Participants injected with scopolamine demonstrated a significant reduction in hippocampal activation compared to the placebo group. They also took longer and made more errors finding the goal in the virtual environment.
- **Link to Question**: Scopolamine acts as an antagonist on acetylcholine receptors in the hippocampus, a brain region crucial for spatial memory. By blocking these receptors, acetylcholine transmission is impaired, directly demonstrating that acetylcholine is essential for spatial memory encoding.

#### 4. Empirical Research Study 2: The Role of an Agonist on Prosocial Behaviour
- **Study**: *Crockett et al. (2010)*
- **Aim**: To investigate the effect of citalopram (a selective serotonin reuptake inhibitor, which acts as an agonist by extending the presence of serotonin in the synaptic cleft) on moral decision-making.
- **Method**: Double-blind, repeated-measures design. Participants were given either citalopram or a placebo and then presented with moral dilemmas (personal vs. impersonal, such as the trolley problem).
- **Findings**: Participants who received the serotonin agonist (citalopram) were significantly less likely to choose to harm one person to save many in "personal" moral dilemmas (e.g., pushing a man off a bridge) compared to the placebo group. Their empathy/prosocial aversion to harming others was enhanced.
- **Link to Question**: By acting as an agonist for serotonin, citalopram promoted prosocial behaviour and reduced harm-inflicting choices, showcasing how modulating synaptic transmission can alter complex social and moral behaviours.

#### 5. Critical Evaluation & Discussion
- **Methodological Considerations**: Many studies use highly controlled laboratory conditions (such as double-blind designs) to establish a cause-and-effect relationship between chemical manipulation and behaviour. However, artificial tasks (like virtual reality mazes or hypothetical moral dilemmas) may lack ecological validity.
- **Reductionism vs. Holism**: Explaining complex human behaviours (like navigation or morality) solely through synaptic agonist/antagonist interactions is biologically reductionist. It overlooks environmental factors, cognitive schemas, and cultural variables.
- **Ethical Considerations**: Administering active chemical agents (like scopolamine or citalopram) to human participants carries risks of side effects. Informed consent, thorough screening, and post-experiment debriefing/monitoring are critical.
- **Construct Validity**: It is difficult to measure exact neurotransmitter levels in a living human brain in real-time; fMRI scans are indirect measures of neural activity.

#### 6. Conclusion
- Summarize the main points: Agonists (like citalopram) and antagonists (like scopolamine) are vital tools for mapping the relationships between neurotransmitters (like serotonin and acetylcholine) and behaviours (like moral decision-making and spatial memory).
- Conclude by stating that while experimental research provides compelling causal evidence, a holistic view combining biological mechanisms with cognitive and social perspectives is essential to fully understand human behaviour.

### Marking Criteria (IB Psychology ERQ - 22 Marks)

#### **Criterion A: Focus on the question (2 marks)**
- **2 marks**: The essay is consistently focused on the role of agonists and/or antagonists on human behaviour. The response is well-targeted to the prompt throughout.
- **1 mark**: The response is somewhat focused but contains irrelevant information, or only briefly defines the core concepts.
- **0 marks**: No focus on the question.

#### **Criterion B: Knowledge and understanding (6 marks)**
- **5-6 marks**: The student demonstrates detailed, accurate, and deep knowledge of agonists and antagonists and how they affect synaptic transmission. The biological mechanisms are explained clearly.
- **3-4 marks**: The student demonstrates some knowledge of agonists/antagonists, but explanations of synaptic transmission or the chemical mechanisms may contain minor inaccuracies or lack depth.
- **1-2 marks**: Limited knowledge is demonstrated. Terminology is used incorrectly or is undefined.

#### **Criterion C: Use of research (6 marks)**
- **5-6 marks**: Relevant research (e.g., Antonova et al., Crockett et al., or Rogers & Kesner) is used effectively to support the explanation. The studies are accurately described (aims, methods, findings) and explicitly linked to the prompt.
- **3-4 marks**: Research is described but is not fully integrated or contains some inaccuracies. The link to how agonists/antagonists affect behaviour is weak or superficial.
- **1-2 marks**: Research is highly inaccurate, descriptive without purpose, or absent.

#### **Criterion D: Critical thinking (6 marks)**
- **5-6 marks**: The student provides a well-developed, critical evaluation of the studies and the biological explanation. Issues such as reductionism, research methods, ecological validity, and ethical considerations are discussed maturely.
- **3-4 marks**: There is some evidence of critical thinking, but it is superficial, generic, or presented as a checklist rather than integrated into the flow of the argument.
- **1-2 marks**: Little to no critical thinking is present.

#### **Criterion E: Clarity and organisation (2 marks)**
- **2 marks**: The essay is well-structured, logical, and easy to read. Terminology is used precisely.
- **1 mark**: The essay has some structure but is difficult to follow in places; spelling and grammar issues disrupt the reading flow.
- **0 marks**: The essay is chaotic and lacks any cohesive structure.

### Essay Outline & Guidance

#### 1. Introduction
- **Define the terms**:
- **Agonist**: A chemical substance that binds to a receptor site of a neuron and stimulates a response, mimicking or enhancing the action of a neurotransmitter (can be endogenous, like neurotransmitters themselves, or exogenous, like drugs/SSRI-type medications).
- **Antagonist**: A chemical substance that binds to a receptor site and blocks or dampens a biological response, preventing neurotransmitters from binding and activating the receptor.
- **Significance**: Understanding agonists and antagonists helps psychologists understand how specific neurotransmitters influence human cognitive processes and behaviours, such as memory consolidation, spatial navigation, or prosocial behaviour.
- **Thesis Statement**: Agonists and antagonists play a critical role in modulating neurotransmitter pathways, which directly impacts human behaviour. However, investigating these effects in humans presents methodological and ethical challenges that must be evaluated.

#### 2. Key Biological Mechanisms
- Explain the process of neurotransmission: action potential, release of neurotransmitters into the synaptic cleft, binding to post-synaptic receptors.
- Describe how **agonists** (e.g., acetylcholine, citalopram as an indirect agonist/SSRI) increase the activity of a neurotransmitter system.
- Describe how **antagonists** (e.g., scopolamine blocking acetylcholine receptors) decrease or block neurotransmitter activity.

#### 3. Empirical Research Study 1: The Role of an Antagonist on Memory
- **Study**: *Antonova et al. (2011)*
- **Aim**: To investigate the effect of acetylcholine receptor blockage (using the antagonist scopolamine) on spatial memory tasks in humans.
- **Method**: Double-blind, placebo-controlled, repeated-measures design. Male participants were injected with either scopolamine (an acetylcholine antagonist) or a placebo before performing a virtual reality "Arena task" (navigating a maze) while undergoing an fMRI scan.
- **Findings**: Participants injected with scopolamine demonstrated a significant reduction in hippocampal activation compared to the placebo group. They also took longer and made more errors finding the goal in the virtual environment.
- **Link to Question**: Scopolamine acts as an antagonist on acetylcholine receptors in the hippocampus, a brain region crucial for spatial memory. By blocking these receptors, acetylcholine transmission is impaired, directly demonstrating that acetylcholine is essential for spatial memory encoding.

#### 4. Empirical Research Study 2: The Role of an Agonist on Prosocial Behaviour
- **Study**: *Crockett et al. (2010)*
- **Aim**: To investigate the effect of citalopram (a selective serotonin reuptake inhibitor, which acts as an agonist by extending the presence of serotonin in the synaptic cleft) on moral decision-making.
- **Method**: Double-blind, repeated-measures design. Participants were given either citalopram or a placebo and then presented with moral dilemmas (personal vs. impersonal, such as the trolley problem).
- **Findings**: Participants who received the serotonin agonist (citalopram) were significantly less likely to choose to harm one person to save many in "personal" moral dilemmas (e.g., pushing a man off a bridge) compared to the placebo group. Their empathy/prosocial aversion to harming others was enhanced.
- **Link to Question**: By acting as an agonist for serotonin, citalopram promoted prosocial behaviour and reduced harm-inflicting choices, showcasing how modulating synaptic transmission can alter complex social and moral behaviours.

#### 5. Critical Evaluation & Discussion
- **Methodological Considerations**: Many studies use highly controlled laboratory conditions (such as double-blind designs) to establish a cause-and-effect relationship between chemical manipulation and behaviour. However, artificial tasks (like virtual reality mazes or hypothetical moral dilemmas) may lack ecological validity.
- **Reductionism vs. Holism**: Explaining complex human behaviours (like navigation or morality) solely through synaptic agonist/antagonist interactions is biologically reductionist. It overlooks environmental factors, cognitive schemas, and cultural variables.
- **Ethical Considerations**: Administering active chemical agents (like scopolamine or citalopram) to human participants carries risks of side effects. Informed consent, thorough screening, and post-experiment debriefing/monitoring are critical.
- **Construct Validity**: It is difficult to measure exact neurotransmitter levels in a living human brain in real-time; fMRI scans are indirect measures of neural activity.

#### 6. Conclusion
- Summarize the main points: Agonists (like citalopram) and antagonists (like scopolamine) are vital tools for mapping the relationships between neurotransmitters (like serotonin and acetylcholine) and behaviours (like moral decision-making and spatial memory).
- Conclude by stating that while experimental research provides compelling causal evidence, a holistic view combining biological mechanisms with cognitive and social perspectives is essential to fully understand human behaviour.

### Marking Criteria (IB Psychology ERQ - 22 Marks)

#### **Criterion A: Focus on the question (2 marks)**
- **2 marks**: The essay is consistently focused on the role of agonists and/or antagonists on human behaviour. The response is well-targeted to the prompt throughout.
- **1 mark**: The response is somewhat focused but contains irrelevant information, or only briefly defines the core concepts.
- **0 marks**: No focus on the question.

#### **Criterion B: Knowledge and understanding (6 marks)**
- **5-6 marks**: The student demonstrates detailed, accurate, and deep knowledge of agonists and antagonists and how they affect synaptic transmission. The biological mechanisms are explained clearly.
- **3-4 marks**: The student demonstrates some knowledge of agonists/antagonists, but explanations of synaptic transmission or the chemical mechanisms may contain minor inaccuracies or lack depth.
- **1-2 marks**: Limited knowledge is demonstrated. Terminology is used incorrectly or is undefined.

#### **Criterion C: Use of research (6 marks)**
- **5-6 marks**: Relevant research (e.g., Antonova et al., Crockett et al., or Rogers & Kesner) is used effectively to support the explanation. The studies are accurately described (aims, methods, findings) and explicitly linked to the prompt.
- **3-4 marks**: Research is described but is not fully integrated or contains some inaccuracies. The link to how agonists/antagonists affect behaviour is weak or superficial.
- **1-2 marks**: Research is highly inaccurate, descriptive without purpose, or absent.

#### **Criterion D: Critical thinking (6 marks)**
- **5-6 marks**: The student provides a well-developed, critical evaluation of the studies and the biological explanation. Issues such as reductionism, research methods, ecological validity, and ethical considerations are discussed maturely.
- **3-4 marks**: There is some evidence of critical thinking, but it is superficial, generic, or presented as a checklist rather than integrated into the flow of the argument.
- **1-2 marks**: Little to no critical thinking is present.

#### **Criterion E: Clarity and organisation (2 marks)**
- **2 marks**: The essay is well-structured, logical, and easy to read. Terminology is used precisely.
- **1 mark**: The essay has some structure but is difficult to follow in places; spelling and grammar issues disrupt the reading flow.
- **0 marks**: The essay is chaotic and lacks any cohesive structure.

### Introduction
- **Define the terms**: Define cognitive etiology as explanations focusing on cognitive distortions, schemas, and thinking patterns as primary causes of psychological disorders.
- **Identify the disorder**: Clearly state that the essay will focus on Major Depressive Disorder (MDD).
- **Introduce the primary cognitive theories**: Aaron Beck's Cognitive Theory of Depression (comprising negative cognitive schemas, cognitive distortions, and the cognitive triad of negative views about the self, the world, and the future).
- **Thesis Statement**: Although cognitive theories offer powerful explanatory and practical utility (particularly in treatment development), they must be evaluated against issues of bidirectional causality and integrated with biological vulnerabilities (diathesis-stress models) to fully explain depression.

### Main Body: Theory and Conceptual Framework
- **Beck's Cognitive Theory**: Explain the three key components of Beck's model:
1. *Negative Cognitive Triad*: Negative beliefs about oneself (e.g., 'I am worthless'), the world (e.g., 'The world is unfair'), and the future (e.g., 'Things will never improve').
2. *Negative Schemas*: Cognitive frameworks formed in childhood through adverse experiences (e.g., loss, abuse) that are reactivated by stressful life events later in life.
3. *Cognitive Distortions*: Systematic errors in logic, such as overgeneralization, selective abstraction, and personalization.

### Empirical Evidence
- **Study 1: Alloy et al. (1999)**
- *Aim*: To investigate whether a particular cognitive style (positive or negative) can predict the onset of depression.
- *Method*: A prospective, longitudinal study tracking a sample of young adults (with no history of depression) for 6 years, classified as either 'positive' or 'negative' cognitive styles based on tests.
- *Results*: After 6 years, 17% of the negative cognitive style group developed depression, compared to only 1% of the positive cognitive style group.
- *Conclusion*: Cognitive styles are reliable predictors of MDD, supporting Beck's causal claims.
- **Study 2: Caseras et al. (2007)**
- *Aim*: To investigate cognitive attentional bias in depressed versus non-depressed individuals using eye-tracking technology.
- *Method*: Participants were shown pairs of pictures (one neutral, one sad) while their initial eye movements and duration of gaze were recorded.
- *Results*: Depressed participants showed a significant attentional bias, looking at sad images for longer durations than non-depressed participants.
- *Conclusion*: Demonstrates structural attentional differences that align with Beck's cognitive schema hypothesis.

### Critical Evaluation and Synthesis
- **Strengths of Cognitive Explanations**:
- **Strong empirical support**: Numerous longitudinal and experimental studies demonstrate a correlation between cognitive styles and depressive symptomatology.
- **Practical application**: Has led directly to the development of Cognitive Behavioral Therapy (CBT), which is widely proven to be highly effective and has lower relapse rates than medication alone.
- **Limitations of Cognitive Explanations**:
- **The Bidirectionality Issue (Causality)**: It remains difficult to determine whether negative thinking causes depression, or whether depression (perhaps caused by biological factors) alters thinking patterns (the 'treatment-etiology fallacy').
- **Reductionism**: Cognitive models can overlook biological etiologies (such as genetic predispositions, neurotransmitter imbalances, or hormonal changes) or sociocultural influences (such as systemic poverty, trauma, or cultural expectations).
- **Synthesis**: A more comprehensive view is offered by the **diathesis-stress model**, which suggests that cognitive vulnerability (such as negative schemas) interacts with environmental stress and genetic vulnerability (like the 5-HTTLPR gene) to trigger MDD.

### Assessment Criteria for 22-Mark ERQ

**Criterion A: Focus on the question (2 marks)**
- **2 marks**: The essay is focused on the specific demands of the question (discussing cognitive explanations for a depressive disorder) throughout.
- **1 mark**: The essay is somewhat focused on the question, but there are significant deviations.

**Criterion B: Knowledge and understanding (6 marks)**
- **5-6 marks**: The response demonstrates detailed and accurate knowledge of cognitive explanations (e.g., Beck's cognitive triad, cognitive distortions, schemas) of depression.
- **3-4 marks**: The response demonstrates some knowledge, but key concepts of the cognitive etiology may be missing or described too briefly.
- **1-2 marks**: The response shows minimal or very superficial knowledge of the topic.

**Criterion C: Use of research to support psychological knowledge (6 marks)**
- **5-6 marks**: Relevant research studies (e.g., Alloy et al., Caseras et al.) are accurately described, explained, and explicitly connected to how they support cognitive explanations of depression.
- **3-4 marks**: Research studies are cited but are either described with significant inaccuracies or are not fully aligned with the central cognitive argument.
- **1-2 marks**: Minimal or no research is used, or the research used is completely irrelevant.

**Criterion D: Critical thinking (6 marks)**
- **5-6 marks**: The essay shows well-developed critical evaluation of the cognitive approach, including discussions on causality (bidirectional ambiguity), treatment-etiology fallacy, biological alternatives, and the strengths/limitations of the supporting methodology.
- **3-4 marks**: The essay includes some critical evaluation, but it is superficial, descriptive, or relies on generic evaluation points.
- **1-2 marks**: Critical evaluation is absent or highly limited.

**Criterion E: Clarity and organization (2 marks)**
- **2 marks**: The essay is well-structured, easy to follow, and uses psychological terminology consistently and correctly.
- **1 mark**: The essay has some structure but is disorganized in parts or lacks appropriate terminology.