Edexcel Pre-U Psychology: Essential Core Knowledge Review | Edexcel Pre-U 心理学核心知识点梳理

📚 Edexcel Pre-U Psychology: Essential Core Knowledge Review | Edexcel Pre-U 心理学核心知识点梳理

The Edexcel Pre-U Psychology course offers an in-depth exploration of key approaches, classic studies, and scientific methods. This revision guide distils the essential knowledge you need across research methodology, social, cognitive, biological, and learning approaches, as well as issues and debates. Mastering these foundations will support your analysis, evaluation, and personal investigation.

Edexcel Pre-U 心理学课程深入探讨核心心理学流派、经典研究和科学方法。本篇复习指南提炼了研究方法、社会、认知、生物、学习心理学途径以及议题与辩论中的必备知识。掌握这些基础将有力支持你的分析、评价和个人研究。

1. Research Methods and Ethics | 研究方法与伦理

Psychologists use various research methods: experiments (lab, field, quasi), observations, self-report techniques (questionnaires, interviews), and case studies. Each method has strengths in internal validity, ecological validity, and reliability.

心理学家使用多种研究方法：实验（实验室、现场、准实验）、观察、自我报告技术（问卷、访谈）和个案研究。每种方法在内部效度、生态效度和信度上各有优劣。

Experimental designs include independent groups, repeated measures, and matched pairs. Confounding variables and demand characteristics must be controlled through randomisation, standardisation, and counterbalancing.

实验设计包括独立组设计、重复测量设计和匹配对设计。须通过随机化、标准化和平衡法来控制混淆变量和需求特征。

Ethical guidelines (BPS) require informed consent, debriefing, right to withdraw, confidentiality, and protection from harm. Cost-benefit analysis is used to justify ethically sensitive research, such as Milgram’s.

英国心理学会伦理准则要求知情同意、事后说明、退出权利、保密和避免伤害。在米尔格拉姆等伦理敏感研究中常用成本-收益分析论证其合理性。

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2. Social: Milgram’s Obedience Study (1963) | 社会心理学：米尔格拉姆的服从实验

Stanley Milgram recruited 40 male participants for a study on ‘punishment and learning’. They were told to administer increasingly severe shocks to a confederate ‘learner’ each time an error was made. In reality, no shocks were given.

斯坦利·米尔格拉姆招募了40名男性参与者参加一项“惩罚与学习”实验。他们被要求每当“学习者”（同谋）犯错就施加逐渐增强的电击。事实上并未实施任何电击。

65% of participants continued to the highest 450-volt shock level, despite hearing screams and protests. The study revealed the powerful influence of an authority figure and situational factors on obedience.

65%的参与者持续施加电击至最高450伏，尽管听到惨叫和抗议。该实验揭示了权威人物和情境因素对服从的强大影响力。

Evaluation highlights include high internal validity due to standardised procedure, but low ecological validity and significant ethical concerns about deception and psychological harm.

评价要点包括标准化程序带来高内部效度，但生态效度较低，且存在欺骗和心理伤害的重大伦理争议。

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3. Social: Asch’s Conformity Research (1951) | 社会心理学：阿希的从众实验

Solomon Asch investigated conformity by asking 123 male participants to judge line lengths in groups of confederates. On critical trials, confederates unanimously gave wrong answers.

所罗门·阿希让123名男性参与者在有同谋者的小组中判断线段长度。在关键试次中，所有同谋一致给出错误答案。

About 37% of responses were conforming, and 75% of participants conformed at least once. Conformity decreased when the majority was broken or when answers were written privately.

约37%的回答是从众的，75%的参与者至少从众一次。当多数意见出现分歧或私下书面作答时，从众显著减少。

Asch demonstrated normative social influence (desire to fit in) and identified group size, unanimity, and task difficulty as key factors affecting conformity.

阿希证明了规范性社会影响（渴望融入群体），并识别出群体规模、一致性和任务难度是影响从众的关键因素。

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4. Cognitive: Bartlett’s Reconstructive Memory (1932) | 认知心理学：巴特利特的记忆重构研究

Frederic Bartlett used ‘The War of the Ghosts’, a Native American folk tale, to study memory in British participants. He employed serial reproduction and repeated reproduction techniques.

弗雷德里克·巴特利特使用北美印第安民间故事“幽灵战争”研究英国参与者的记忆，采用了系列再现和重复再现技术。

Participants omitted unfamiliar details, rationalised the story to fit their cultural schemas, and reconstructed the narrative. Recall became shorter and more conventional over time.

参与者省略不熟悉的细节，使故事合理化以符合自己的文化图式，并对叙事进行重构。随着时间推移，再现内容变得更短且更符合常规。

This research established that memory is an active reconstructive process, influenced by existing knowledge schemas, rather than a passive tape recorder.

这项研究确立了记忆是主动的重构过程，受已有知识图式影响，而非被动的录像机式记录。

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5. Learning: Bandura’s Bobo Doll Experiment (1961) | 学习心理学：班杜拉的波波玩偶实验

Albert Bandura exposed 36 boys and 36 girls to an adult model behaving aggressively or non-aggressively towards a Bobo doll. A control group had no model.

阿尔伯特·班杜拉让36名男孩和36名女孩观察成人榜样对波波玩偶做出攻击行为或非攻击行为，控制组未观察任何榜样。

Children who observed aggressive models imitated specific physical and verbal aggression. Boys showed more physical aggression, while all children were influenced by same-sex models.

观察到攻击榜样的儿童模仿了具体的身体和言语攻击。男孩表现出更多身体攻击，而所有儿童都更易受同性榜样的影响。

This study supports Social Learning Theory, demonstrating learning through observation, imitation, and vicarious reinforcement, even without direct rewards.

该研究支持社会学习理论，证明了通过观察、模仿和替代性强化进行学习，即使没有直接奖励也能发生。

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6. Biological: Brain Plasticity and Maguire et al. (2000) | 生物心理学：大脑可塑性与马圭尔研究

Eleanor Maguire studied London taxi drivers using structural MRI to examine hippocampal volume. The posterior hippocampi of taxi drivers were significantly larger compared to matched controls.

埃莉诺·马圭尔使用结构磁共振成像研究伦敦出租车司机，发现他们的后海马体积显著大于匹配的对照组。

Hippocampal volume positively correlated with time spent as a taxi driver, suggesting neuroplasticity: the brain’s ability to change structure in response to environmental demands.

海马体积与驾龄呈正相关，表明神经可塑性：大脑能根据环境需求改变自身结构。

Neurotransmitters such as dopamine and serotonin also play crucial roles in behaviour. For example, excess dopamine is linked to schizophrenia, while low serotonin is associated with depression.

神经递质如多巴胺和血清素在行为中起关键作用。例如，多巴胺过多与精神分裂症相关，而血清素不足与抑郁相关。

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7. Cognitive Models: Multi-Store Model and Working Memory | 认知模型：多存储模型与工作记忆

Atkinson and Shiffrin (1968) proposed the Multi-Store Model (MSM) with three separate stores: sensory register, short-term memory (STM), and long-term memory (LTM). Information moves via attention and rehearsal.

阿特金森和谢夫林（1968）提出多存储模型，包含三个独立存储：感觉登记、短时记忆和长时记忆。信息通过注意和复述进行传递。

The MSM highlights STM’s limited capacity (7±2 items) and duration (18-30 seconds), whereas LTM has unlimited capacity and duration. Serial position effect evidence supports distinct stores.

多存储模型强调短时记忆的有限容量（7±2项）和保持时间（18-30秒），而长时记忆容量和时间无限。系列位置效应证据支持不同存储的存在。

Baddeley and Hitch (1974) developed Working Memory Model (WMM) as a more detailed view of STM. It includes a central executive, phonological loop, visuospatial sketchpad, and episodic buffer.

巴德利和希奇（1974）提出了工作记忆模型，更详细地解释短时记忆。它包括中央执行系统、语音回路、视空间画板和情景缓冲器。

MSM / 多存储模型	WMM / 工作记忆模型
Unitary STM / 单一短时存储	Multi-component STM / 多成分短时工作记忆
Passive rehearsal / 被动复述	Active processing / 主动加工

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8. Issues and Debates: Nature vs. Nurture and Reductionism | 议题与辩论：先天与后天及还原论

The nature-nurture debate asks whether behaviour is determined by innate biological factors (genes, brain structure) or by environmental influences (upbringing, culture). Most psychologists adopt an interactionist approach.

先天-后天辩论探讨行为是由先天生物因素（基因、脑结构）还是后天环境影响（养育、文化）决定。多数心理学家采用交互论立场。

Reductionism breaks down complex behaviour into simple components (e.g., explaining mood through neurotransmitter levels). Holism argues behaviour must be understood at a whole-person level in context.

还原论将复杂行为分解为简单成分（如通过神经递质水平解释情绪）。整体论则主张必须在具体情境中从整体人的层面理解行为。

In Pre-U, you must evaluate studies on these dimensions. For example, Milgram’s work can be seen as situationally reductionist, while Bandura’s SLT embraces reciprocal determinism.

在Pre-U中，你必须从这些维度评价研究。例如，米尔格拉姆的实验可视为情境还原论，而班杜拉的社会学习理论则包含相互决定论。

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9. Data Analysis and Inferential Statistics | 数据分析与推论统计

Descriptive statistics include measures of central tendency (mean, median, mode) and dispersion (range, standard deviation). Inferential statistics allow psychologists to draw conclusions from samples to populations.

描述统计包括集中量数（平均数、中位数、众数）和离差量数（极差、标准差）。推论统计允许心理学家从样本推论总体。

The choice of statistical test depends on the research design and data level. Use Chi-squared (χ²) for nominal data and independent groups; Spearman’s rho for ordinal data with correlation; Mann-Whitney U or Wilcoxon for ordinal differences.

统计检验的选择取决于研究设计和数据水平。名义数据独立组用卡方检验（χ²）；顺序数据相关用斯皮尔曼等级相关；顺序数据差异用曼-惠特尼U或威尔科克森检验。

p < 0.05 is the conventional significance level; if observed value exceeds critical value (for most tests), the result is significant.

p < 0.05 是常规显著水平；若观测值大于临界值（多数检验），则结果显著。

Type I error is rejecting a true null hypothesis (false positive); Type II error is failing to reject a false null hypothesis (false negative). Power of a test increases with sample size.

第一类错误是错误地拒绝真零假设（假阳性）；第二类错误是未能拒绝假零假设（假阴性）。检验效力随样本量增大而提高。

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10. Personal Investigation: Planning and Report Writing | 个人研究：计划与报告撰写

Your personal investigation is a practical project where you design, conduct, and report a psychological study. You must formulate a clear aim, operationalised hypothesis (directional or non-directional), and identify variables.

你的个人研究是一个实践项目，需要设计、实施并报告一项心理学研究。必须明确目标、操作化假设（方向性或非方向性）并确定变量。

The report follows standard sections: Abstract, Introduction (with background literature), Method (design, participants, materials, procedure), Results (descriptive and inferential statistics), Discussion (explanation, relationship to theory, evaluation), and References.

报告遵循标准结构：摘要、引言（含背景文献）、方法（设计、参与者、材料、程序）、结果（描述和推论统计）、讨论（解释、联系理论、评价）和参考文献。

Ethical considerations must be central; obtain informed consent, offer debriefing, and protect participant well-being. Include a reflection on validity, reliability, sampling bias, and possible improvements.

伦理考量必须贯穿始终；取得知情同意，提供事后说明并保护参与者福利。须反思效度、信度、抽样偏差及可能的改进。

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