2025 IB DP Psychology 模擬試題連答案詳解

Neuroplasticity refers to the brain's ability to change its structure and organization over time in response to learning, active experience, or environmental changes. It is driven by processes such as dendritic branching, where repetitive stimulation of neurons leads to new synaptic connections, and synaptic pruning, where unused connections are eliminated. A key study demonstrating this is Draganski et al. (2004). The aim of the study was to investigate whether structural changes in the brain could occur in response to learning a new motor skill (juggling). The researchers used a sample of volunteers who were randomly allocated to either a juggling group or a non-juggling control group. MRI scans were conducted on all participants at three points: before learning to juggle, after three months of practicing daily (once they could sustain a three-ball routine), and three months after stopping practice. The results showed that there were no significant differences in brain structure in the initial scan. However, the second scan showed a significant increase in grey matter in the mid-temporal area of both hemispheres, which is associated with visual memory and movement perception. In the final scan, after three months of no practice, the amount of grey matter in these areas had decreased. These findings clearly demonstrate neuroplasticity. The increase in grey matter represents dendritic branching and the formation of new neural networks as a result of learning and practicing a new skill. The subsequent decrease in grey matter when practice ceased represents synaptic pruning, showing that the brain is dynamic and alters its physical structure based on environmental demands.

Marks are awarded based on the standard IB SAQ rubric (total 9 marks): [7-9 marks]: The response shows a deep understanding of neuroplasticity (defining it accurately and discussing mechanisms like dendritic branching or pruning) and describes a highly relevant study (such as Draganski et al. (2004) or Maguire et al. (2000)) with accurate details of its aim, procedure, results, and conclusion. There is an explicit and analytical link explaining how the study demonstrates neuroplasticity. [4-6 marks]: The response explains neuroplasticity and describes a study, but may be descriptive rather than explanatory, or may lack precise details of either the theory or the study. [1-3 marks]: The response is disorganized, lacks detail, or has significant inaccuracies. Accept/Reject notes: Accept any valid study investigating neuroplasticity, such as Maguire et al. (2000), Draganski et al. (2004), or Rosenzweig and Bennett (1972). Reject studies that do not investigate neuroplasticity (such as studies on localization of function that do not demonstrate structural change over time).

Confirmation bias is a cognitive bias and a type of heuristic (System 1 thinking) where individuals selectively search for, interpret, favor, and recall information in a way that confirms their pre-existing beliefs, hypotheses, or expectations, while ignoring or dismissing contradictory evidence. This bias simplifies complex cognitive processing but can lead to systematic errors in decision-making and judgment. A study demonstrating how confirmation bias affects thinking and decision-making is Snyder and Swann (1978). The aim of the study was to investigate whether people show confirmation bias when trying to determine the personality traits of others. Female college students were told they were going to meet a person who was either an extrovert (outgoing and sociable) or an introvert (quiet and reserved). They were asked to prepare a set of questions to ask the person to help determine if this description was true. They were given a list of 26 questions, consisting of 11 questions typical of introverts (e.g., 'What do you dislike about noisy parties?'), 11 questions typical of extroverts (e.g., 'What do you do to liven up a party?'), and 4 neutral questions. The researchers found that participants selected questions that actively confirmed their expectations. Those expecting an extrovert chose questions typical of extroverts, and those expecting an introvert chose questions typical of introverts. This demonstrates confirmation bias because the participants' thinking and decision-making were guided by their pre-existing hypotheses; they designed a biased search for information that would validate their expectations rather than seeking objective, neutral information that could disconfirm them.

Marks are awarded based on the standard IB SAQ rubric (total 9 marks): [7-9 marks]: The response clearly and accurately defines confirmation bias and explains its relationship with thinking and decision-making. A relevant study (such as Snyder and Swann, 1978, or the Wason four-card selection task) is described accurately (aim, procedure, findings). The response clearly explains how the study's results illustrate the effect of confirmation bias on cognitive processing. [4-6 marks]: The response explains confirmation bias and describes a study, but the explanation of the link between the study and the cognitive bias is underdeveloped or some details are missing. [1-3 marks]: The response contains significant inaccuracies or lacks clear definitions and relevant research. Accept/Reject notes: Accept any study investigating confirmation bias (such as Snyder and Swann, 1978; Wason, 1968; Stone et al., 1997). Reject studies of other cognitive biases (such as anchoring bias or framing effect) unless they are explicitly linked to confirmation bias.

Social Cognitive Theory (SCT), developed by Albert Bandura, suggests that human behavior is learned through the observation of models in the social environment. Unlike simple behaviorism, SCT emphasizes that individuals do not need direct reinforcement to learn; instead, they can learn via vicarious reinforcement (observing the consequences of others' actions). Bandura proposed that four cognitive factors are essential for social learning to occur: attention (the observer must notice the model's behavior), retention (the observer must remember the behavior), reproduction (the observer must have the physical and cognitive ability to perform the behavior), and motivation (the observer must have a reason or incentive to mimic the behavior, such as identification with the model). A classic study demonstrating SCT is Bandura, Ross and Ross (1961), commonly known as the Bobo Doll study. The aim was to demonstrate that learning can occur through the observation of model behavior, specifically aggressive behavior. The sample consisted of young children aged 3 to 6. They were divided into three main conditions: one group observed an adult model acting physically and verbally aggressive toward an inflated Bobo doll; another group observed a non-aggressive model who played quietly with toys; and a third control group did not observe any model. The children were then placed in a playroom containing a Bobo doll and other toys, and their behavior was observed. The results showed that children who had observed the aggressive model exhibited significantly more aggressive behavior (both physical and verbal imitation) compared to the other groups. Boys were more likely to imitate physical aggression, especially if the model was male. This study demonstrates Social Cognitive Theory by showing that children learned a novel, complex set of aggressive behaviors purely through observation (attention and retention) and reproduced it without any direct reinforcement or reward, proving that social learning can occur through observation.

Marks are awarded based on the standard IB SAQ rubric (total 9 marks): [7-9 marks]: The response provides a highly accurate and detailed explanation of Social Cognitive Theory, including key concepts such as modeling, observational learning, vicarious reinforcement, and the cognitive processes involved (attention, retention, reproduction, motivation). A relevant study (such as Bandura, Ross, and Ross, 1961) is described with accurate details of aim, procedure, and findings, and is explicitly linked to how it demonstrates the theory. [4-6 marks]: The response explains Social Cognitive Theory and describes a study, but the explanation of the link or the details of the theory/study may be incomplete. [1-3 marks]: The response is highly descriptive, containing significant inaccuracies or superficial descriptions. Accept/Reject notes: Accept any study testing Social Cognitive Theory, such as Bandura et al. (1961), Charlton et al. (2002), or Joy, Kimball, and Zabrack (1986). Reject studies focusing on Social Identity Theory (e.g., Tajfel, 1970) unless they are explicitly and successfully integrated into an explanation of Social Cognitive Theory.

### Focus of the Essay
The essay must address the command term **'Discuss'**, which requires a balanced review of the reliability of one cognitive process (typically memory). The response should clearly define what is meant by 'reliability' in the context of cognitive psychology and introduce the reconstructive nature of memory.

### Theoretical Framework
* **Reconstructive Memory:** The theory that memory is not an objective, passive recording of events (like a video camera) but an active, creative process. When retrieving information, we reconstruct the memory using logical schemas, expectations, and post-event information, which can introduce distortions, omissions, and insertions.
* **Schema Theory:** Mental frameworks that help us organize and interpret information. Schemas can lead to cognitive biases and systematic errors when we use them to 'fill in the blanks' of an incomplete memory.

### Empirical Evidence
#### 1. Evidence of Unreliability: Loftus and Palmer (1974)
* **Aim:** To investigate whether leading questions can influence eyewitness testimony estimates of speed and distort subsequent memory.
* **Method (Experiment 1):** Participants watched film clips of car accidents and were asked to estimate the speed of the cars using different verbs in the critical question: *'About how fast were the cars going when they [smashed / collided / bumped / hit / contacted] each other?'*
* **Results (Experiment 1):** The verb 'smashed' yielded the highest speed estimates (≈ 40.5 mph), while 'contacted' yielded the lowest (≈ 31.8 mph).
* **Method (Experiment 2):** Participants returned a week later and were asked, *'Did you see any broken glass?'* (there was no broken glass in the clip).
* **Results (Experiment 2):** Participants in the 'smashed' condition were significantly more likely to falsely recall seeing broken glass.
* **Conclusion:** Post-event misinformation (the leading verb) integrated with the original memory, altering its representation and demonstrating that memory is reconstructive and highly malleable.

#### 2. Evidence of Reliability: Yuille and Cutshall (1986)
* **Aim:** To investigate the accuracy of eyewitness testimony in a real-life, high-stress situation.
* **Method:** A field study involving 13 eyewitnesses to a real-life gun shooting in Vancouver, Canada. Researchers interviewed the witnesses 4–5 months after the incident and compared their accounts to the original police interviews. They also introduced two leading questions (suggesting a broken headlight or a yellow quarter panel, neither of which existed).
* **Results:** Eyewitness recall was highly accurate, remaining stable even after several months. The leading questions had virtually no effect on the accuracy of the witnesses' recall.
* **Conclusion:** In real-life situations involving high stress, high personal relevance, and clear visibility, human memory can be highly reliable and resistant to post-event distortion.

### Critical Evaluation and Synthesis
* **Methodological Contrast:** Loftus and Palmer utilized a highly controlled laboratory experiment, which allows for causal inferences but lacks ecological validity (passive viewing of videos does not replicate the emotional arousal of a real accident). Yuille and Cutshall conducted a naturalistic field study with high ecological validity but limited control over confounding variables (e.g., media exposure or repeated rehearsals of the event during the intervening months).
* **The Role of Emotion and Biological Relevance:** Highly emotional or personally significant events may activate different cognitive/neural pathways (e.g., flashbulb memory mechanisms, amygdala activation) that make them more vivid and robust against post-event suggestions, whereas mundane, laboratory-based memories are easily distorted.
* **Practical Applications:** Understanding the limits of memory reliability has profound implications for the legal system, including police interviewing techniques (e.g., the cognitive interview) and the evaluation of eyewitness testimony in court.

### Conclusion
While laboratory research demonstrates that memory is malleable and easily reconstructed through schemas and misinformation, real-world field research suggests that under conditions of high personal relevance and emotional intensity, cognitive recall can be remarkably robust and reliable.

### IB Psychology ERQ Marking Rubric (22 Marks)

#### Criterion A: Focus on the question (2 marks)
* **2 marks:** The response is fully focused on the reliability of one cognitive process (e.g., memory) throughout. The essay addresses the command term 'Discuss' by presenting balanced arguments.
* **1 mark:** The response is partially focused on the question, or discusses multiple cognitive processes superficially without maintaining a clear thesis.

#### Criterion B: Knowledge and understanding (6 marks)
* **5-6 marks:** Detailed, accurate, and highly relevant psychological theory (e.g., reconstructive memory, schema theory, misinformation effect) is explained clearly. Psychological terminology is used consistently and correctly.
* **3-4 marks:** Relevant psychological theory is explained, but with minor inaccuracies, omissions, or lack of depth.
* **1-2 marks:** Minimal or highly generalized knowledge is demonstrated; terms are used incorrectly.

#### Criterion C: Use of research to support decals (6 marks)
* **5-6 marks:** Case studies/experiments (such as Loftus & Palmer, Yuille & Cutshall) are highly relevant, accurately described (aims, method, findings, conclusions), and explicitly used to support the central arguments regarding reliability.
* **3-4 marks:** Relevant studies are cited, but there are some inaccuracies in description, or the connection between the research and the reliability of the cognitive process is not fully developed.
* **1-2 marks:** Descriptions of studies are superficial, inaccurate, or lack relevance to the prompt.

#### Criterion D: Critical thinking (6 marks)
* **5-6 marks:** Critical evaluation is consistently evidence-based and well-developed. The student evaluates the research methodologically (e.g., lab vs. field experiments) and theoretically (e.g., limits of schema theory, the role of emotion). Alternative perspectives are explicitly considered.
* **3-4 marks:** Evaluation is present but tends to be formulaic (e.g., simple 'ecological validity' or 'sample size' critiques) without deep integration into the overall argument.
* **1-2 marks:** Evaluation is superficial, descriptive, or missing entirely.

#### Criterion E: Clarity and organization (2 marks)
* **2 marks:** The essay is well-structured, logical, and easy to follow. Introduction, body paragraphs, and conclusion are clearly demarcated.
* **1 mark:** The essay has some structure but lacks cohesion, or the transition between arguments is disorganized.

Focus of the essay: The essay should clearly identify one psychological disorder, such as Major Depressive Disorder (MDD), and discuss sociocultural explanations for its etiology.

Main Explanations to Include:
1. The Vulnerability Model (Brown and Harris, 1978): This model argues that depression is the result of an interaction between vulnerability factors (e.g., lack of a confiding relationship, unemployment, three or more children under the age of 14 at home, loss of mother before age 11), provoking agents (highly stressful life events), and symptom-forming factors.
2. Cultural factors and symptom presentation (e.g., Parker et al., 2001): This addresses how cultural norms and social expectations influence how distress is experienced, reported, and diagnosed (e.g., somatization in Chinese cultures versus psychologization in Western cultures).

Supporting Studies:
- Brown and Harris (1978): Surveyed 458 London women on life events and depressive symptoms. Found that working-class women with kids were far more likely to develop depression when facing severe life stressors due to vulnerability factors.
- Parker et al. (2001): Investigated differences in symptom presentation between Malaysian Chinese and Australian Caucasian patients diagnosed with MDD. Found that Chinese patients were significantly more likely to report somatic symptoms as their primary complaint.

Discussion and Evaluation Points:
- Strengths: Sociocultural explanations provide a holistic view of mental health, avoiding the biological reductionism of genetic or neurochemical models. They account for the higher rates of depression observed in marginalized socioeconomic groups.
- Limitations: It is difficult to establish a direct cause-and-effect relationship because research is largely correlational. There is a risk of bidirectional ambiguity (e.g., does poverty cause depression, or does depression lead to poverty?). These models must be integrated with biological and cognitive vulnerabilities (the biopsychosocial approach) for a complete explanation.

Marks are awarded out of 22 based on the official IB Psychology ERQ criteria:

Criterion A: Focus on the question (2 marks)
- 2 marks: The response is fully focused on the question, identifying a specific disorder (e.g., MDD) and clearly addressing sociocultural explanations.
- 1 mark: The focus is generalized or lacks clarity.

Criterion B: Knowledge and understanding (6 marks)
- 5-6 marks: Excellent knowledge and understanding of sociocultural explanations (e.g., vulnerability model, cultural distress) and the chosen disorder.
- 3-4 marks: Good knowledge, but may lack depth or contains minor inaccuracies.
- 1-2 marks: Superficial or highly inaccurate knowledge.

Criterion C: Use of research (6 marks)
- 5-6 marks: Relevant research (e.g., Brown and Harris, Parker et al.) is introduced, described accurately, and effectively linked to the explanation.
- 3-4 marks: Research is described but the connection to the explanation is weak or incomplete.
- 1-2 marks: Limited or irrelevant research used.

Criterion D: Critical thinking (6 marks)
- 5-6 marks: Consistent and well-developed evaluation of the sociocultural explanations and research (e.g., limitations of correlational data, cultural bias, interaction with biological factors).
- 3-4 marks: Some critical thinking is present but lacks depth or is repetitive.
- 1-2 marks: Evaluation is superficial or descriptive.

Criterion E: Clarity and organization (2 marks)
- 2 marks: Well-structured, coherent, and easy to follow.
- 1 mark: Lacks logical flow or structure in places.

Focus of the essay: The essay should address biological origins of relationship formation, evaluating the theories using empirical evidence and highlighting methodological, theoretical, and ethical limitations.

Main Explanations to Include:
1. Evolutionary Explanations (e.g., Parental Investment Theory): Proposes that men and women look for different traits in partners to maximize reproductive success. Men seek indicators of youth and fertility, while women seek resource security and commitment.
2. Neurochemical/Hormonal Explanations: Suggests that neurotransmitters like dopamine and hormones like oxytocin play a critical role in the initial attraction phase and long-term attachment phase of relationships.

Supporting Studies:
- Buss (1989): Cross-cultural study of 37 samples across 33 countries. Found universal differences in mate preferences: women valued financial capacity and older age, while men valued physical attractiveness and younger age, supporting evolutionary predictions.
- Scheele et al. (2012): Investigated the role of oxytocin in human fidelity and relationship maintenance. Found that men in stable relationships who received oxytocin kept a greater physical distance from an attractive female stranger compared to those on a placebo, suggesting oxytocin promotes pair-bonding.

Evaluation Points:
- Strengths: Supported by strong cross-cultural empirical evidence (Buss, 1989). Provides logical evolutionary explanations for behaviors that seem universal. High-control lab experiments demonstrate biological mechanisms.
- Limitations: Evolutionary theories suffer from retrospective adaptationist thinking (it is impossible to directly observe ancestral mating environments). Biological explanations are highly reductionist, ignoring the significant roles of culture, social learning, and cognitive schemas in relationship formation. There is also bidirectional ambiguity regarding hormone levels and behavior (does oxytocin form the relationship, or does being in a relationship increase oxytocin levels?).

Marks are awarded out of 22 based on the official IB Psychology ERQ criteria:

Criterion A: Focus on the question (2 marks)
- 2 marks: Explicitly addresses biological explanations of relationship formation.
- 1 mark: The focus is vague or wanders into non-biological or general relationship topics.

Criterion B: Knowledge and understanding (6 marks)
- 5-6 marks: Detailed and accurate knowledge of biological explanations (evolutionary mate selection, oxytocin).
- 3-4 marks: Clear knowledge but lacks depth or contains minor inaccuracies.
- 1-2 marks: Superficial or highly inaccurate understanding.

Criterion C: Use of research (6 marks)
- 5-6 marks: Relevant research (e.g., Buss, Scheele et al.) is described accurately and integrated smoothly to support biological theories.
- 3-4 marks: Research is described but the connection to biological mechanisms of formation is weak.
- 1-2 marks: Limited or irrelevant research.

Criterion D: Critical thinking (6 marks)
- 5-6 marks: Comprehensive critical evaluation of biological theories (e.g., reductionism, cultural variations, evolutionary narratives, post-hoc reasoning).
- 3-4 marks: Some critical thinking is present but lacks depth or range.
- 1-2 marks: Minimal critical analysis.

Criterion E: Clarity and organization (2 marks)
- 2 marks: Coherent, logical, and structured essay.
- 1 mark: Structurally disorganized or hard to follow.