📚 Case Study Practice for Year 10 Cambridge Psychology | 剑桥10年级心理学案例分析实战演练
Case study analysis is one of the core skills you need to master in Year 10 Cambridge Psychology. It invites you to apply psychological theories, models and concepts to real or realistic scenarios, moving beyond simple memorisation. This article provides a step‑by‑step guide, followed by four fully worked examples from memory, social influence, attachment and eyewitness testimony. Each case is analysed by pairing English and Chinese explanations so that you can build both subject knowledge and academic language skills.
案例分析是剑桥10年级心理学必须掌握的核心技能之一。它要求你将心理学理论、模型和概念应用到真实或贴近现实的场景中，而不仅仅是死记硬背。本文先提供一套分步指南，再用记忆、社会影响、依恋和目击证词四个领域的完整示例手把手带你演练。每个案例的分析都采用英中对照的方式，帮你同步提升学科知识和学术语言能力。
1. What is Case Study Analysis in Psychology? | 什么是心理学案例分析？
In Cambridge Psychology, a case study analysis requires you to examine a short description of a person, group or event and interpret it using relevant psychological ideas. You are not just summarising the story; you need to identify which theories or studies can explain what is happening, evaluate whether the explanation fits, and sometimes suggest evidence that supports or challenges the interpretation. The aim is to show that you can think like a psychologist, linking observed behaviour to established knowledge.
在剑桥心理学中，案例分析要求你审视一段关于个人、群体或事件的简短描述，并用相关的心理学观点加以解读。你不能只复述故事，而是需要找出哪些理论或研究能够解释发生的现象，评估该解释是否贴切，有时还要提出支持或质疑该解释的证据。目标在于展示你能像心理学家那样思考，将观察到的行为与已有知识联系起来。
2. Key Skills for Case Study Analysis | 案例分析所需的关键技能
The most important skills for effective case analysis are identification, application and evaluation. Identification means recognising which psychological concepts are triggered by the case (e.g., 'this sounds like normative social influence'). Application requires you to explain how the theory fits the details of the scenario, using specific evidence from the case. Evaluation involves commenting on the strengths and limitations of the explanation: for example, highlighting alternative interpretations or pointing out what the theory cannot explain. You also need to use key terminology accurately, such as 'short‑term memory', 'disinhibition' or 'secure attachment'.
案例分析的三大核心技能是识别、应用和评价。识别是指认出案例中触发了哪些心理学概念（例如“这听起来像是规范社会影响”）。应用要求你解释该理论如何切合案例的细节，要运用案例中的具体证据。评价则是对解释的优缺点进行评论：例如指出是否存在其他解读，或点明该理论无法解释的部分。你还必须准确使用专业术语，比如“短时记忆”“去抑制”或“安全型依恋”。
A common pitfall is ‘story‑telling’ – rewriting the case without any psychological comment. Another is ‘name‑dropping’ – simply listing terms without showing how they apply. The fix is always to follow every psychological term with a ‘because’ sentence that links the concept to the behaviour described.
一个常见的陷阱是“讲故事”——把案例重写一遍却没有半点心理学评论。另一个是“吊书袋”——只是罗列术语却没有说明如何应用。解决办法是：每当你写出一个心理学概念，立刻补上一句“因为……”，从而将该概念与案例中的行为挂起钩来。
3. Step-by-Step Guide to Analysing a Case | 案例分析步骤指南
Step 1: Read the case twice. The first time, get the big picture; the second time, underline any behaviours, emotions or thoughts that seem psychologically interesting.
第一步：把案例读两遍。第一遍把握大致内容；第二遍划出任何在心理层面上有意思的行为、情绪或想法。
Step 2: Brainstorm possible concepts. Ask yourself: Which topics have we covered in class that match? For instance, if a person changes their opinion because others do, think of conformity and social influence.
第二步：头脑风暴可能的概念。问自己：我们在课上学过的哪些主题与此吻合？例如，如果一个人因别人都这么做而改变自己的看法，你可以想到从众与社会影响。
Step 3: Select the strongest theory. Choose the one that best explains the central behaviour, not just a side detail. Make sure you can describe the theory accurately.
第三步：选择最强的理论。挑选最能解释核心行为的理论，而不是只触及边角细节。确保你能准确描述该理论。
Step 4: Apply point by point. Take each part of the theory and show how it matches specific details in the case. Use phrases like ‘This is evident when…’ or ‘The case illustrates this because…’
第四步：逐点应用。把理论的每个部分拿出来，说明它们如何对应案例中的具体细节。多用“这一点体现在当……时”或“该案例说明了这一点，因为……”这样的句式。
Step 5: Evaluate briefly. Suggest one strength and one limitation of using this theory for this case. Could another theory also explain the same behaviour? Does the case lack information needed to be sure?
第五步：简要评价。指出用该理论解释本案例的一个优点和一个局限。是否有别的理论也能解释同一行为？案例是否缺少某些关键信息而无法确定？
4. Case Study 1: Multistore Model of Memory in Everyday Life | 案例一：日常生活中的多存储记忆模型
Maria is preparing for a French vocabulary test. She reads a list of 20 words silently for two minutes and then tries to write them down in any order. She notices that she tends to recall the first four words and the last three words very well, but the words in the middle of the list seem to have vanished. When she tries again ten minutes later, she can only remember the first two words and the last word; the middle words are gone. Her friend suggests she repeats the words out loud, which helps a little, but the middle words still remain hard to retrieve.
玛丽亚正在准备法语词汇测验。她默读一份20个单词的列表两分钟，然后试着以任意顺序把它们写出来。她发现自己能很好地回忆起前四个单词和最后三个单词，但列表中间的单词好像都消失了。十分钟后她再试一次，结果只记得前两个单词和最后一个单词，中间的单词全忘了。朋友建议她大声重复这些单词，这稍微有点帮助，可中间的单词依然难以回忆。
5. Analysis of Case Study 1 | 案例一分析
The most fitting theory is the Multistore Model of Memory (Atkinson and Shiffrin, 1968). Maria’s recall pattern shows a clear serial position effect. The first few words are recalled well because they have been rehearsed and transferred into long‑term memory – this is the primacy effect. The last few words are still held in short‑term memory when she begins writing, producing the recency effect. The middle words, however, receive little rehearsal and are displaced before they can move into long‑term memory.
最适合的理论是记忆的多存储模型（Atkinson & Shiffrin, 1968）。玛丽亚的回忆模式显示出明显的系列位置效应。前几个单词回忆良好，是因为它们经过复述后进入了长时记忆——这便是首因效应。最后几个单词在她开始默写时还暂存在短时记忆中，因此产生了近因效应。而中间的单词几乎没有得到复述，在进入长时记忆前就被挤掉了。
The second recall attempt after a delay supports the model: the recency effect faded because short‑term memory had been disrupted. Only the words that had been successfully encoded into long‑term memory (the first two) remained. The suggestion to repeat words aloud is a rehearsal strategy, which according to the model should strengthen transfer into long‑term memory. However, the middle words still suffered because they entered the rehearsal loop later and received fewer repetitions.
延迟后的第二次回忆结果支持了该模型：近因效应消退，因为短时记忆已被干扰。只有那些成功编码进长时记忆的单词（前两个）保留了下来。朋友提出的大声重复是一种复述策略，按照模型，这种策略应该能加强向长时记忆的转移。然而中间的单词依然受害，因为它们进入复述环路的时间较晚，得到的复述次数较少。
A limitation of using the Multistore Model alone is that it does not explain why some words are more memorable than others due to meaning or emotional content. Maria might have found certain words especially vivid or relevant, which could have helped encoding independently of their position in the list. Furthermore, the model oversimplifies short‑term memory as a single, passive store, which the Working Memory Model (Baddeley & Hitch, 1974) challenges by suggesting separate components for visual and verbal information. In this case, the verbal rehearsal likely engaged the phonological loop, a concept the Multistore Model cannot address explicitly.
仅使用多存储模型的一个局限是，它无法解释为什么有些单词会因为含义或情绪内容而比其他单词更容易记住。玛丽亚也许觉得某些单词特别生动或贴近自己，这会独立于列表位置而促进编码。此外，该模型把短时记忆过分简化为一个被动的单一存储库，而工作记忆模型（Baddeley & Hitch, 1974）则提出视觉和言语信息具有各自独立的成分，对此发起挑战。在本案例中，言语复述很可能调动了语音回路，而多存储模型无法明确表述这一概念。
6. Case Study 2: Conformity and Social Influence | 案例二：从众与社会影响
Tom, aged 15, has never been interested in smoking. However, at a party, most of his friends pull out cigarettes and encourage him to try. Tom feels uneasy but notices that all the boys he looks up to are smoking. He does not want to appear scared or be ridiculed, so he takes a cigarette and smokes it, even though deep down he knows it is unhealthy. Later, he tells himself that 'everyone does it' and that it is not a big deal.
15岁的汤姆对吸烟从无兴趣。然而在一次聚会上，他身边的大多数朋友都掏出了香烟，还鼓动他试试。汤姆感到不安，却注意到所有他仰慕的男生都在抽烟。他不想显得胆小，也不愿被人取笑，于是接过一支烟抽了起来，尽管心底清楚抽烟不健康。事后他告诉自己“大家都这么做”，这没什么大不了的。
7. Analysis of Case Study 2 | 案例二分析
Tom’s behaviour is a classic example of conformity driven by normative social influence (NSI). NSI occurs when a person conforms to the majority’s behaviour in order to be liked, accepted and avoid rejection. Tom explicitly worries about being seen as scared or ridiculed, which directly points to NSI. The fact that he gave in to peer pressure even though his private opinion remained unchanged is characteristic of compliance – a shallow type of conformity where public behaviour changes but private beliefs do not.
汤姆的行为是规范社会影响驱动从众的经典例子。规范社会影响指个体为了被喜欢、被接纳以及避免排斥而跟随多数人的行为。汤姆明确担心自己被认为胆小或遭到嘲笑，这正说明是规范社会影响在起作用。他屈从于同伴压力，尽管个人看法并未改变，这正是顺从的特征——一种表层的从众，即公开行为改变而私下信念不变。
We can also see cognitive dissonance reduction in the final sentence. After smoking, Tom tells himself that ‘everyone does it’ to reduce the discomfort created by his action clashing with his health knowledge. This self‑justification is an attempt to resolve the dissonance. In addition, the presence of a high‑status group (boys he looks up to) acted as a powerful source of influence. Research on conformity (e.g., Asch, 1951) shows that conformity rates increase when the majority is unanimous and when the task is done in public, both conditions present at the party.
在最后一句，我们还能看到认知失调的减弱。抽烟之后，汤姆告诉自己“大家都这么做”，为的是减少自己行为与健康知识相冲突所产生的不适感。这种自我辩解就是试图消除失调。此外，他所仰慕的高地位群体成为一个强有力的影响源。有关从众的研究（例如 Asch, 1951）表明，当多数人意见一致且任务在公开场合进行时，从众率会更高——这两点在聚会上都存在。
An alternative explanation could be informational social influence (ISI), if Tom genuinely believed that his friends knew better about whether smoking was acceptable. However, the case specifies that he ‘knew it is unhealthy’, making NSI a better fit. The limitation of applying only NSI is that it does not account for individual differences: some teenagers resist such pressure due to personality traits like high self‑confidence or moral reasoning, which the case does not explore.
另一个可能的解释是信息社会影响，但前提是汤姆真的认为朋友们更懂抽烟是否可以接受。然而案例明确指出他“知道抽烟不健康”，因此规范社会影响更合适。仅用规范社会影响解释的局限在于，它无法说明个体差异：有些青少年因为自信心强或道德推理能力高等人格特质而能够抗拒此类压力，而案例并未涉及这些因素。
8. Case Study 3: Attachment Types and the Strange Situation | 案例三：依恋类型与陌生情境
Two‑year‑old Layla is observed in the Strange Situation. When her mother leaves the room, Layla cries immediately and tries to follow. On reunion, Layla reaches out to be picked up, but then pushes her mother away and squirms to get down. She continues to fuss and is not easily comforted. Throughout the procedure, Layla shows little exploration of the toys and remains fixated on her mother’s whereabouts, even when the stranger is present.
两岁的莱拉在陌生情境实验中被观察。当母亲离开房间时，莱拉立刻哭起来并试图跟上去。在重聚时，莱拉伸出双手要抱，但随后又推开母亲，扭动身体想要下地。她继续闹情绪，很难被安抚。在整个过程中，莱拉很少探索玩具，始终紧盯着母亲的行踪，甚至在陌生人在场时也是如此。
9. Analysis of Case Study 3 | 案例三分析
Layla’s behaviour most closely matches an insecure‑resistant (Type C) attachment, as classified by Ainsworth (1978). Key indicators are the intense distress on separation, the ambivalent reaction on reunion (seeking contact but also resisting it) and the limited exploration even when the caregiver is present. The fact that Layla is not easily comforted and continues to fuss after reunion further supports Type C. Insecure‑resistant children often have caregivers who are inconsistent in responding to their needs, leading the child to be uncertain about the caregiver’s availability and thus clingy yet resentful.
莱拉的行为最接近不安全‑抗拒型（C类）依恋，这是由安斯沃思（1978）分类的。关键指标包括分离时的强烈痛苦、重聚时的矛盾反应（既寻求接触又加以抗拒），以及即便照料者在场也极少探索玩具。重聚后莱拉难以被安抚且持续闹情绪，这进一步支持了C类。不安全‑抗拒型儿童的照料者常常在回应孩子需求时表现得不一致，导致儿童对照料者的可获得性感到不确定，因此既黏人又怨怒。
To confirm the diagnosis, we would compare Layla’s responses with a table of criteria:
| Attachment Type | Separation Distress | Reunion Behaviour | Exploration |
| Secure (B) | Upset, but can be comforted | Happy, seeks contact | High, uses caregiver as safe base |
| Insecure‑Avoidant (A) | Little distress | Ignores or avoids caregiver | Explores but without caregiver check‑ins |
| Insecure‑Resistant (C) | Intense distress | Seeks contact but resists, not easily comforted | Low exploration, clingy |
表中可见，莱拉的特征与不安全‑抗拒型完全一致。
In evaluation, the Strange Situation has high inter‑rater reliability, so different observers would likely agree on Layla’s classification. However, cultural bias is a concern: the behaviour that signals ‘insecure‑resistant’ in one culture (e.g., high clinginess) might be considered normal in another. The case does not provide information about Layla’s cultural background or caregiving history, which limits the certainty of the interpretation. Moreover, attachment type can change with life circumstances, so a single observation may not capture Layla’s true attachment style.
就评价而言，陌生情境具有较高的评分者信度，因此不同观察者很可能一致认同莱拉的分类。然而文化偏见是一个问题：在某种文化中被视为“不安全‑抗拒型”的行为（如高度黏人），在其他文化中或许会被认为是正常的。本案例没有提供莱拉的文化背景或养育史信息，这限制了该解释的确定性。此外，依恋类型会随生活境遇而变化，因此单次观察可能无法反映莱拉真实的依恋风格。
10. Case Study 4: Eyewitness Testimony and Misleading Information | 案例四：目击证词与误导信息
After a minor traffic accident, a police officer asks Ben, an eyewitness, ‘How fast was the red car going when it smashed into the van?’ Ben estimates 60 km/h even though he initially thought the speed was closer to 45 km/h. A week later, Ben confidently recalls seeing broken glass on the road, although police photographs show none. Another witness, who was asked ‘How fast was the car going when it contacted the van?’, estimates 45 km/h and mentions no broken glass.
发生一起轻微交通事故后，警察问目击者本：“红色轿车猛撞面包车时车速有多快？”本估计是60公里/小时，虽然他最初觉得车速更接近45公里/小时。一周后，本自信地回忆说看到路上有碎玻璃，但警方照片显示并没有。另一名被问到“轿车接触面包车时车速有多快？”的目击者估计为45公里/小时，且未提及碎玻璃。
11. Analysis of Case Study 4 | 案例四分析
This case illustrates the effect of leading questions and misleading post‑event information on eyewitness testimony, as studied by Loftus and Palmer (1974). The verb ‘smashed’ in the officer’s question suggested a high‑speed collision, causing Ben to reconstruct his memory and report a higher speed. This is the response‑bias explanation: the participant adjusts their answer to match the expectations implied by the wording. Alternatively, the memory itself may have been altered (substitution explanation), so that Ben now genuinely ‘remembers’ the car going faster.
该案例展示了引导性问题和误导性事后信息对目击证词的影响，这正是 Loftus 和 Palmer（1974）所研究的内容。警察提问中的动词“猛撞”暗示了高速碰撞，导致本重构自己的记忆，从而报告了更高的车速。这就是反应偏差解释：参与者会调整自己的回答以符合用词所隐含的预期。另一种可能是记忆本身已被改变（替代解释），因此本现在真的“记得”车子开得更快。
The broken glass detail is a powerful example of a false memory planted by a leading question. Loftus and Palmer found that participants who heard the verb ‘smashed’ were more than twice as likely to report non‑existent broken glass compared to those who heard ‘hit’ or ‘contacted’. The control witness in this case, who was asked a neutral question, estimated a lower speed and did not report broken glass, reinforcing the causal role of the leading word.
碎玻璃这一细节是引导性问题植入虚假记忆的有力例证。Loftus 和 Palmer 发现，听到“猛撞”一词的参与者报告并不存在的碎玻璃的几率，是听到“撞击”或“接触”的参与者的两倍以上。本案例中的对照组目击者，被问及中性问题后，估计车速较慢，且未报告碎玻璃，这强化了引导词的关键作用。
The practical implication is that police interview protocols should avoid leading questions. The Cognitive Interview technique, for example, encourages witnesses to report everything in their own words and mentally reinstate the context, minimising suggestion. A limitation of using the Loftus and Palmer study as an explanation is that the original research used video clips rather than a real accident, so it may lack ecological validity. However, subsequent real‑world studies have confirmed the risk of misinformation in actual police interviews. In Ben’s case, we cannot be certain that the question alone created the false memory – stress and post‑event discussion could also have played a part, but the case highlights the strong influence of a single powerful verb.
现实意义在于，警方询问规程应避免引导性问题。例如，认知访谈技术就鼓励目击者用自己的话报告一切，并在内心复原当时情境，从而尽量降低暗示性。用 Loftus 和 Palmer 的研究作为解释的一个局限是，最初的研究使用视频片段而非真实事故，因此可能缺乏生态效度。不过，后续的现实世界研究已证实，在实际警方询问中确实存在误导信息的风险。就本的案例而言，我们无法绝对肯定仅是问题本身制造了虚假记忆——压力和事后讨论也可能起了作用，但该案例突出显示了单个强势动词的强大影响力。
12. Common Mistakes and Tips for Improvement | 常见错误与提升技巧
Many students lose marks by describing the theory without linking it to the case. A top‑tip is to use a highlighter to colour‑code the case description: green for behaviours matching one part of the theory, yellow for another, and then write your analysis by following the colours. This forces you to connect each theoretical point with tangible evidence.
很多学生因描述理论却不联系案例而失分。一个绝佳的技巧是，用荧光笔给案例描述标色：比如将符合理论某一部分的行为标为绿色，另一部分标为黄色，然后按照颜色来组织你的分析。这会迫使你把每一个理论点都与具体的证据挂起钩来。
Another frequent error is evaluation that is too generic. Instead of saying ‘this study has low validity’, explain what type of validity is threatened in this specific situation and why. In the eyewitness case, say that ecological validity may be low because the original experiment was not a real accident, but that later field studies have strengthened the conclusions. Always tailor your evaluation to the case, not just to the theory in isolation.
另一个常见毛病是评价过于笼统。不要说“这项研究效度低”，而要解释在这一具体情境中，哪种效度受到了威胁以及为什么。在目击证词案例中，就说生态效度可能较低，因为最初实验并非真实事故，但后来的现场研究加强了结论。始终让评价紧贴案例，不要脱离案例只孤立评价理论。
Finally, practise writing a concise analysis under timed conditions. The more cases you analyse, the faster your brain becomes at spotting the relevant concept. Work with a partner: one student reads a scenario aloud, the other race to identify the best theory and its application. This builds both speed and fluency, which are essential in the Cambridge examination, where you must think on your feet.
最后，务必限时进行简练分析的练习。分析的案例越多，你的大脑就越能迅速捕捉到相关概念。可以与同伴合作：一人大声阅读情境，另一人竞赛找出最相关的理论并解释应用。这既能提升速度，又能锻炼流畅度，这些都是剑桥考试中至关重要的能力，因为你必须当场快速思考。
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