IGCSE Cambridge Psychology: High-Frequency Topics & Common Mistakes Analysis | IGCSE剑桥心理学：高频考点与易错题分析

📚 IGCSE Cambridge Psychology: High-Frequency Topics & Common Mistakes Analysis | IGCSE剑桥心理学：高频考点与易错题分析

This article identifies the most frequently tested topics in the Cambridge IGCSE Psychology syllabus and highlights the common mistakes students make in exams. It is designed to help you revise efficiently and avoid losing easy marks.

本文聚焦剑桥 IGCSE 心理学考纲中最常考查的知识点，并针对同学们在考试中反复出现的典型错误进行剖析，帮助大家高效复习、避免不必要的失分。

1. Research Methods | 研究方法

Research methods are the backbone of IGCSE Psychology. You must be able to distinguish experiments, observations, questionnaires, interviews, case studies and correlations. You also need to identify the independent variable (IV), dependent variable (DV) and confounding variables.

研究方法是 IGCSE 心理学的核心基础。考生必须能够区分实验法、观察法、问卷法、访谈法、个案研究法与相关研究，同时准确识别自变量（IV）、因变量（DV）和混淆变量。

Common mistakes include confusing IV with DV, or claiming that a correlation proves causation. Remember: correlation does not mean cause and effect.

常见错误包括混淆自变量与因变量，或者错误地认为相关研究可以证明因果关系。请牢记：相关不等于因果。

Key Term \| 关键词	Definition \| 定义
Independent Variable (IV)	The variable that is manipulated by the researcher. 研究者主动操纵的变量。
Dependent Variable (DV)	The variable that is measured to see the effect of the IV. 用于测量自变量效果的变量。
Confounding Variable	An unwanted variable that may affect the DV. 可能影响因变量的额外变量。

2. Biological Psychology: Brain and Nervous System | 生物心理学：大脑与神经系统

The structure and function of neurons, the brain and the nervous system are high-frequency topics. Make sure you can label key brain areas such as the hippocampus, cerebellum and cerebral cortex. The role of neurotransmitters such as dopamine and serotonin is also frequently tested.

神经元、大脑及神经系统的结构与功能是高频考点。你需要能够标注海马体、小脑、大脑皮层等关键脑区。多巴胺、血清素等神经递质的作用也经常出现在考题中。

One common error is writing that the hippocampus is responsible for language. In fact, the hippocampus is mainly involved in forming new memories. Use the taxi driver study by Maguire et al. (2000) as an example of neuroplasticity.

一个常见错误是认为海马体负责语言功能。实际上，海马体主要参与新记忆的形成。可引用 Maguire 等人（2000 年）的伦敦出租车司机研究作为神经可塑性的例证。

Students should also avoid confusing the central nervous system (CNS) with the peripheral nervous system (PNS). The CNS consists of the brain and spinal cord; the PNS connects the CNS to the rest of the body.

考生还应避免混淆中枢神经系统与外周神经系统。中枢神经系统由脑和脊髓构成；外周神经系统则负责连接中枢神经系统与身体其他部位。

3. Learning Theories: Classical and Operant Conditioning | 学习理论：经典条件反射与操作性条件反射

Classical conditioning (Pavlov, 1927; Watson & Rayner, 1920) and operant conditioning (Skinner, 1948) are guaranteed topics. You must use the correct technical terms: unconditioned stimulus (UCS), unconditioned response (UCR), conditioned stimulus (CS), conditioned response (CR), reinforcement and punishment.

经典条件反射（巴甫洛夫，1927；华生与雷纳，1920）与操作性条件反射（斯金纳，1948）是必考内容。考生必须正确使用专业术语：无条件刺激（UCS）、无条件反应（UCR）、条件刺激（CS）、条件反应（CR）、强化与惩罚。

Common mistakes include confusing negative reinforcement with punishment. Negative reinforcement is the removal of an unpleasant stimulus to increase a behaviour; punishment is a consequence that decreases a behaviour. Also, in classical conditioning, students often mix up the UCS and the CS.

常见错误包括混淆负强化与惩罚。负强化是指通过移除不愉快刺激来增加行为发生的概率；惩罚则是减少行为发生的概率。此外，在经典条件反射中，同学们常混淆 UCS 与 CS。

Positive reinforcement: adding a reward to increase behaviour. 正强化：增加奖励以促进行为。
Negative reinforcement: removing an unpleasant stimulus to increase behaviour. 负强化：移除厌恶刺激以促进行为。
Punishment: adding or removing a stimulus to decrease behaviour. 惩罚：通过给予或移除刺激来减少行为。

4. Memory: Multi-Store Model | 记忆：多存储模型

Atkinson and Shiffrin’s multi-store model (1968) is a central topic. It describes sensory memory, short-term memory (STM) and long-term memory (LTM), each with distinct capacity and duration. You should also know Miller’s “7 plus or minus 2” and the effects of interference and decay.

Atkinson 与 Shiffrin 的多存储模型（1968）是核心考点。该模型描述了感觉记忆、短时记忆和长时记忆，各自具有不同的容量与持续时间。你还需要了解 Miller 的“7 加减 2”以及干扰与衰退对遗忘的影响。

A frequent error is treating working memory (Baddeley) as identical to STM. Working memory is an active processing system for temporary storage and manipulation of information. Another error is confusing recall and recognition: recall requires retrieving information without cues, while recognition involves selecting the correct item from presented options.

常见错误是将工作记忆（Baddeley）与短时记忆混为一谈。工作记忆是一个对信息进行暂时存储与主动加工的加工系统。另一个易错点在于混淆回忆与再认：回忆指在没有线索的情况下提取信息，而再认是从提供的选项中选择正确答案。

STM capacity ≈ 7 ± 2 chunks | 短时记忆容量 ≈ 7 ± 2 组块

5. Perception | 知觉

Perception questions often focus on visual cues, perceptual constancy and visual illusions. You should explain size constancy, shape constancy and depth perception using both monocular and binocular cues.

知觉类考题常聚焦于视觉线索、知觉恒常性和视觉错觉。你需要能够解释大小恒常性、形状恒常性以及依靠单眼与双眼线索产生的深度知觉。

Common mistakes: students say that perception is “what we see with our eyes”, but perception is an active process in which the brain interprets sensory information. Another error is using the term “illusion” without referencing specific examples, such as the Muller-Lyer illusion or the Ponzo illusion.

常见错误：有同学将知觉描述为“眼睛看到的东西”，但知觉是一个大脑主动解释感觉信息的过程。另一个问题是只提“错觉”而不引用具体例子，如穆勒-莱尔错觉或庞佐错觉。

Remember that perceptual set, context, expectations and motivation can influence perception, as demonstrated in the study by Bruner and Minturn (1955).

请注意，Bruner 与 Minturn（1955 年）的研究表明，知觉定势、情境、期望和动机都会影响知觉。

6. Social Influence: Conformity and Obedience | 社会影响：从众与服从

Asch’s conformity study (1951, 1956) and Milgram’s obedience study (1963) are essential content. You must clearly separate the two: conformity means changing behaviour to fit into a group norm, while obedience means following an authority figure’s direct orders.

Asch 的从众研究（1951/1956）与 Milgram 的服从研究（1963）是必考内容。考生务必区分两者：从众是为了遵守群体规范而改变行为，服从则是遵循权威人物的直接指令。

A typical mistake is describing Milgram’s procedure when the question asks about Asch. Also, do not say that Asch’s participants “got an electric shock” — that was Milgram. Read the question carefully.

典型错误是题目问 Asch 实验时答成 Milgram 的实验程序。另外，千万不要说 Asch 的被试“遭受电击”，那是 Milgram 的实验设计。请仔细审题。

Asch: line judgment, normative social influence. Asch：线段判断任务，规范性社会影响。
Milgram: teacher-learner, authoritative prods. Milgram：教师-学习者范式，权威促逼语。

7. Developmental Psychology: Attachment | 发展心理学：依恋

Attachment theory is a high-frequency topic. Know Bowlby’s evolutionary theory (1969), Ainsworth’s Strange Situation (1970), and the work of Lorenz (1935) and Harlow (1958). You should be able to classify secure, insecure-avoidant and insecure-resistant attachment types.

依恋理论是高频考点。需要掌握 Bowlby 的进化理论（1969）、Ainsworth 的陌生情境实验（1970），以及 Lorenz（1935）与 Harlow（1958）的研究。你还要能区分安全型、不安全-回避型和不安全-矛盾型依恋。

Common mistakes include confusing the features of secure and insecure attachment, or writing that Lorenz’s imprinting experiment involved monkeys. Lorenz used geese; Harlow used monkeys. Also, remember Bowlby proposed a “critical period” for attachment formation, not just a “sensitive period”.

常见错误包括混淆安全型与不安全型依恋的特征，或者误认为 Lorenz 的印刻实验使用的是猴子。Lorenz 使用的是鹅；Harlow 使用的是猴子。此外，Bowlby 提出的是依恋形成的“关键期”，而不仅仅是“敏感期”。

8. Abnormal Psychology: Schizophrenia and Depression | 异常心理学：精神分裂症与抑郁症

For schizophrenia, distinguish positive symptoms (hallucinations, delusions) from negative symptoms (avolition, social withdrawal). For depression, know the cognitive approach, including Ellis’s ABC model and Beck’s negative triad.

对于精神分裂症，要能区分阳性症状（幻觉、妄想）与阴性症状（意志减退、社交退缩）。对于抑郁症，需要掌握认知理论，包括 Ellis 的 ABC 模型和 Beck 的消极三合一。

Common errors: students call negative symptoms “side effects” or confuse the ABC model where B stands for beliefs, not behaviour. Another issue is using the terms “schizophrenia” and “split personality” as if they were the same. They are not.

常见错误：把阴性症状说成“副作用”，或误认为 ABC 模型中的 B 代表行为（实际代表信念 belief）。另一个问题是把“精神分裂症”与“多重人格”混为一谈，二者完全不同。

Ellis’s ABC: A = Activating event, B = Belief, C = Consequence | 埃利斯 ABC 模型：A=诱发事件，B=信念，C=情绪及行为结果

9. Data Analysis and Statistical Measures | 数据分析与统计指标

You must calculate and interpret measures of central tendency (mean, median, mode) and dispersion (range, standard deviation). You should also understand when to use a bar chart, line graph or scattergram.

考生需要会计算并解释集中趋势（平均数、中位数、众数）和离散程度（全距、标准差），同时理解何时使用条形图、折线图或散点图。

Common mistakes include using the mean when the data contain extreme outliers, or ignoring the range when comparing two sets of data. Watch out for units and labels in exam questions. Use statistical terms correctly and do not overstate the strength of a correlation.

常见错误包括数据中存在极端值时仍使用平均数，或者在比较两组数据时忽略全距/标准差。考试时请注意单位与标签，正确使用统计术语，不要夸大相关的强度。

10. Exam Technique and Command Words | 考试技巧与指令词

Understanding command words is vital. “Describe” means give details; “Explain” means give reasons; “Evaluate” means discuss strengths and limitations. For extended writing questions (8-12 marks), structure your answer using a brief introduction, clear key points, and explicit linking back to the question.

理解指令词至关重要。“描述”要求给出细节；“解释”要求说明原因；“评估”要求讨论优点与局限。对于长篇写作题（8-12 分），应采用简短引言、清晰要点并明确回归问题作答。

Do not write everything you know: select relevant studies and link them to the question. Use correct terminology such as “reliability”, “validity”, “ecological validity” and “demand characteristics”. Spell key names correctly: Pavlov, Skinner, Bandura, Bowlby, Ainsworth, Milgram, Asch.

不要“背全书”：应选择与研究问题相关的证据并加以联系。正确使用术语，如“信度”“效度”“生态效度”和“需求特征”。注意关键人名拼写：Pavlov、Skinner、Bandura、Bowlby、Ainsworth、Milgram、Asch 等。

Finally, in your evaluation section, always support each criticism with a concrete reason or evidence. For example, laboratory experiments often have high reliability due to standardised procedures, but may lack ecological validity because the tasks are artificial.

最后，在评估部分，每一处优点或局限都要给出具体理由或证据支撑。例如，实验室实验因程序标准化而信度较高，但任务情景比较人为，可能缺乏生态效度。

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IGCSE Cambridge Psychology: High-Frequency Topics & Common Mistakes Analysis | IGCSE剑桥心理学：高频考点与易错题分析