📚 AS Edexcel Psychology: Case Study Practical Exercises | AS Edexcel 心理学：案例分析实战演练
Case studies offer a unique window into the complexities of human behaviour, allowing psychologists to explore rare phenomena in extraordinary depth. For AS Edexcel candidates, mastering the art of case study analysis is not just about memorising definitions—it is about applying your knowledge to real or hypothetical individuals. This article guides you through the essential features of case study methodology and provides practical, exam-style exercises that mirror the demands of the AS specification. By working through classic cases and structured tasks, you will strengthen your ability to describe, evaluate, and apply psychological research methods in a confident, exam-ready manner.
案例研究为我们打开了一扇独特窗口，让我们能够深入了解人类行为的复杂性，心理学研究者借此可以深度探索罕见现象。对于 AS Edexcel 考生来说，掌握案例分析的艺术不仅仅是记忆定义——更重要的是将知识应用到真实或假设的个体上。本文将带你梳理案例研究法的核心特征，并提供贴近 AS 大纲要求的实战练习。通过剖析经典个案和结构化任务，你将增强描述、评价及应用心理学研究方法的能力，以自信、应考的状态迎接考试。
1. Understanding Case Studies in Psychology | 理解心理学中的案例研究
A case study is an in-depth investigation of a single individual, group, or event. Unlike large-scale surveys or experiments, it gathers rich, detailed data—often using multiple methods—to build a holistic picture. In Edexcel AS Psychology, you are expected to recognise that a case study is not a single method but a research approach that can include interviews, observations, psychometric tests, and the examination of historical records.
案例研究是对单一个体、群体或事件的深入调查。与大范围问卷或实验不同，它通常借助多种方法收集丰富、细致的资料，以构建一个全面的图景。在 Edexcel AS 心理学中，你需要认识到案例研究不是单一的方法，而是一种研究思路，可以包含访谈、观察、心理测验以及历史档案分析。
Psychologists use case studies when studying rare conditions or unique circumstances that would be unethical or impractical to recreate in a laboratory. They often adopt an idiographic approach—focusing on the particular rather than seeking general laws. This idiographic nature gives case studies their power to generate hypotheses and challenge existing theories, but it also raises questions about generalisability.
心理学家在研究罕见病症或无法在实验室重现的独特情境时，会采用案例研究。他们往往采用特殊性取向——关注个别情况而非寻求普遍规律。这种特殊性取向使案例研究具有提出假设、挑战既有理论的力量，但同时也引发了关于可推广性的质疑。
2. Core Features of a Case Study | 案例研究的核心特征
A well-conducted case study tends to be longitudinal, following a person over weeks, years, or even decades. This sustained contact allows researchers to document change and continuity with great precision. It is also holistic, attempting to capture cognitive, emotional, social, and biological dimensions simultaneously.
一项高质量的案例研究往往是纵向的，持续追踪数周、数年甚至数十年。这种持续的接触使研究者能够非常精确地记录变化与恒定性。它还具有整体性，试图同时捕捉认知、情绪、社会和生物维度。
Triangulation is another hallmark. Researchers typically draw on multiple sources—such as interviews with the participant, family reports, medical records, and direct observations—to cross-check findings. This convergence of evidence strengthens the credibility of the conclusions, much like detectives solving a puzzle.
三角验证是另一标志性特征。研究者通常利用多种信息源——比如与被试的访谈、家人报告、医疗记录以及直接观察——来交叉验证发现。这种证据的汇聚增强了结论的可信度，就像侦探破案一样。
Case studies are also opportunistic. They often arise because a person with a rare profile comes to the attention of professionals. The researcher cannot manipulate the independent variable; instead, they document naturally occurring events. This makes the case study a form of naturalistic inquiry with high ecological validity regarding the individual’s real life.
案例研究还带有机会主义色彩。它们往往是因为具有罕见特征的人引起了专业人士的注意而开展。研究者无法操纵自变量，只能记录自然发生的事件。这使得案例研究成为一种自然探究形式，对个体真实生活具有较高的生态效度。
3. Research Design in Case Studies | 案例研究的研究设计
When designing a case study, the researcher must first clarify the purpose—whether it is exploratory, descriptive, or explanatory. For AS exam questions, you could be asked to outline a case study design for a given scenario, so it is vital to think about aims and research questions right from the start.
设计案例研究时，研究者必须首先明确目的——是探索性的、描述性的还是解释性的。在 AS 考试中，你可能会被要求为一个给定情景勾勒案例研究设计，因此从一开始就思考目标和研究问题是至关重要的。
The participant is often selected purposively because they possess unique characteristics. In some designs, a single case is sufficient; in others, a comparative approach is adopted, studying two or more individuals with contrasting conditions to highlight differences. The time frame can be retrospective—looking back at past records—or prospective, following the case forward in time.
被试通常是有目的地挑选的，因为他们具有独特特征。在某些设计中，单个个案就已足够；另一些则采用比较取向，研究两个或多个具备不同条件的人以突显差异。时间框架可以是回溯性的——回顾过往记录——也可以是前瞻性的，随时间向前追踪个案。
The design must specify which data sources will be used and how they will be analysed. Without a clear plan, the mass of rich data can become overwhelming. A good case study design therefore includes a data management strategy, often involving thematic analysis or content analysis to identify recurring patterns.
设计必须明确将使用哪些数据源以及如何分析它们。没有清晰的计划，大量丰富的数据可能变得难以处理。因此，一个好的案例研究设计应包括数据管理策略，通常涉及主题分析或内容分析以识别重复出现的模式。
4. Data Collection Techniques | 数据收集技术
Interviews are the backbone of many case studies. Semi‑structured interviews allow the researcher to probe deeply while still covering key topics. In a clinical setting, open‑ended questioning can reveal the participant’s subjective experience, which is essential for understanding conditions like amnesia or depression.
访谈是许多案例研究的核心。半结构化访谈使研究者既能深入追问，又仍能覆盖关键主题。在临床环境中，开放式提问可以揭示被试的主观体验，这对于理解失忆症或抑郁症等状况至关重要。
Direct observation—either naturalistic or controlled—adds behavioural data. For example, in the classic case of HM (Henry Molaison), researchers observed his performance on memory tasks over many years. These observations allowed them to document the precise nature of his anterograde amnesia without relying solely on his self‑report.
直接观察——无论是自然观察还是控制观察——补充了行为数据。例如，在经典个案 HM（亨利·莫莱森）中，研究者多年来观察他在记忆任务上的表现。这些观察使他们能够记录他顺行性遗忘的精确性质，而不单纯依赖他的自我报告。
Psychometric tests and brain imaging also enrich case study data. Standardised memory tests, IQ assessments, and MRI scans provide quantitative measures that complement qualitative descriptions. Diaries, letters, and school reports can be used to reconstruct a person’s history, turning the case study into a form of archival investigation.
心理测验和脑成像也丰富了案例研究的数据。标准化的记忆测验、智商评估和 MRI 扫描提供了补充定性描述的量化指标。日记、书信和学校报告可用来重建一个人的过往，将案例研究转化为一种档案调查。
5. Evaluating Reliability and Validity | 评估信度与效度
Reliability in case studies can be challenging because replicating a unique individual’s life story is impossible. However, researchers improve reliability by using standardised procedures where possible—such as repeating cognitive tests under the same conditions—and by maintaining an audit trail that documents every step of the data collection process.
案例研究中的信度颇具挑战，因为复制独特个体的生命故事是不可能的。然而，研究者可以通过尽可能使用标准化程序（例如在相同条件下重复认知测验）以及保留审计轨迹来记录数据收集的每一步，从而提高信度。
Internal validity is strengthened by triangulation and by checking interpretations with the participant (known as respondent validation). When multiple sources converge on the same conclusion, we can be more confident that the findings genuinely reflect the person’s reality rather than researcher bias. Nevertheless, the subjective role of the researcher remains a threat; reflexivity—acknowledging one’s own preconceptions—is essential.
内部效度通过三角验证和与被试核对解释（即受访者验证）得到加强。当多种资料汇集得出相同结论时，我们更有信心认为研究结果真实反映了该个体的实际情况，而非研究者偏见。然而，研究者的主观角色仍然是一种威胁；因此反思性——承认自己的先入之见——必不可少。
External validity and generalisability are limited because each case is unique. However, case studies can still achieve theoretical generalisation: the findings may be used to support, challenge, or refine a psychological theory that applies beyond that single individual. For example, HM’s case revolutionised our understanding of the role of the hippocampus in memory—a principle that has since been confirmed in many other people.
外部效度和可推广性有限，因为每个案例都是独特的。但是，案例研究仍然可以实现理论推广：研究结果可用于支持、挑战或完善能适用于该单一个体之外的心理理论。例如，HM 的案例彻底改变了我们对海马体在记忆中的作用的理解——这一原理后来在许多其他人身上得到证实。
6. Ethical Considerations in Depth | 深入伦理考量
Case studies often involve vulnerable individuals—people with brain injuries, rare disorders, or traumatic histories. Protecting their identity is paramount. You must be familiar with how classics such as HM and Clive Wearing are referred to by initials or pseudonyms to preserve anonymity. In the exam, always suggest using codes rather than real names.
案例研究常常涉及弱势个体——脑损伤患者、罕见病症者或具有创伤史的人。保护他们的身份至关重要。你必须熟悉经典案例如 HM 和克莱夫·韦尔林是如何以姓名首字母或化名来引用以保持匿名的。考试中，始终建议使用代号而非真实姓名。
Informed consent is a complex issue. A participant with severe memory impairment may not be able to give fully informed consent in the conventional sense. Researchers must obtain consent from a legal guardian and use ongoing assent procedures—checking throughout the study that the person continues to be willing to take part. Debriefing is also challenging when the participant cannot retain the information, so the debrief may need to be repeated or adapted.
知情同意是一个复杂的问题。患有严重记忆障碍的被试可能无法按常规意义给出完全知情同意。研究者必须从法定监护人处获得同意，并采用持续赞同程序——在整个研究过程中不断确认该人仍愿意参与。当被试无法保留信息时，事后解释也很困难，因此事后解释可能需要重复或调整。
Confidentiality extends beyond names. Details such as the location of treatment, specific dates, and family background must be disguised. In Edexcel AS examinations, you may be asked to comment on how a published case study handled ethical concerns. Always link your points to the British Psychological Society (BPS) guidelines: respect, competence, responsibility, and integrity.
保密性不止于姓名。治疗地点、具体日期和家庭背景等细节也必须加以掩饰。在 Edexcel AS 考试中，你可能会被要求评论已发表的案例研究如何处理伦理问题。务必把你的观点与英国心理学会（BPS）的准则联系起来：尊重、胜任、责任与诚信。
7. The Classic Case of HM: A Step-by-Step Analysis | 经典HM案例分析：逐步解析
Now let’s apply your knowledge to a real case study. Henry Molaison, known as HM, suffered from severe epilepsy and, in 1953, underwent surgery that removed parts of his medial temporal lobes, including the hippocampus. After the operation, he could no longer form new long‑term memories—a condition called anterograde amnesia—while his short‑term memory and procedural memory remained largely intact. Practise the following structured analysis.
现在让我们将知识应用到真实案例中。亨利·莫莱森，即 HM，患有严重癫痫，于 1953 年接受了切除部分内侧颞叶（包括海马体）的手术。术后，他再也无法形成新的长时记忆——这种情况称为顺行性遗忘——而他的短时记忆和程序性记忆大多保持完好。练习以下结构化分析。
First, identify three methods used to study HM. (1) Psychometric testing: standardised memory tasks showed his normal digit span but inability to recall words after a delay. (2) Naturalistic observation: researchers noted his daily routines and how he could learn motor skills, such as mirror‑drawing, despite having no recollection of the practice sessions. (3) Brain imaging: later MRI scans confirmed the precise location of the brain damage. Next, evaluate one strength and one limitation of this multiple‑method approach. Strength: triangulation increased confidence that the memory deficits were genuine, not due to lack of effort. Limitation: over‑testing could have caused fatigue, reducing the validity of later tasks.
首先，识别研究 HM 所用的三种方法。(1) 心理测验：标准化记忆任务显示他的数字广度正常，但无法在延迟后回忆单词。(2) 自然观察：研究者记录了他的日常常规，以及他如何能学会镜像描绘等运动技能，尽管对练习过程毫无记忆。(3) 脑成像：后来的 MRI 扫描确认了脑损伤的精确位置。接下来，评价这种多方法组合的一个优势和一项局限。优势：三角验证增加了信心，相信记忆缺陷是真实的，而不是缺乏努力所致。局限：过度测试可能导致疲劳，降低后期任务的有效性。
Finally, consider the ethical dimension. Although HM’s real name was not revealed until after his death, the extensive testing required him to spend many hours in laboratories. Was the repetitive testing in his best interest? In your exam, you could argue that researchers balanced the pursuit of scientific knowledge with the participant’s wellbeing by keeping sessions short and obtaining ongoing assent from the family.
最后，考虑伦理维度。尽管 HM 的真实姓名直到去世后才被公开，但大量测试要求他在实验室度过许多小时。重复测试是否符合他的最佳利益？在考试中，你可以论证研究者通过缩短实验时段并获得家人的持续赞同，平衡了科学知识的追求与参与者的福祉。
8. The Case of Clive Wearing: Practical Exercise | 克莱夫·韦尔林案例：实战练习
Next, use the following summary to practise your own analysis. Clive Wearing, a musician, suffered brain damage from herpes encephalitis, which destroyed his hippocampus and parts of his frontal lobes. His condition resulted in both anterograde amnesia (inability to form new memories) and retrograde amnesia (loss of many past memories). His moment‑to‑moment consciousness lasts only seconds, as if continuously waking up. Yet his musical ability and emotional memory for his wife remain.
接下来，用以下摘要练习你自己的分析。音乐家克莱夫·韦尔林因疱疹性脑炎遭受脑损伤，海马体和部分额叶被毁。他的状况导致顺行性遗忘（无法形成新记忆）和逆行性遗忘（丧失许多过往记忆）。他每时每刻的意识仅持续数秒，仿佛不断醒来。但他的音乐能力以及对妻子的情感记忆得以保留。
Task 1: Suggest an appropriate research question that a psychologist could investigate using Clive as a single case. Example: “To what extent does implicit emotional memory survive when explicit episodic memory is severely impaired?” Your question should be specific and link to a cognitive theory.
任务一：提出一个心理学家可以利用克莱夫进行单一个案研究的恰当研究问题。示例：”当外显情景记忆严重受损时，内隐情绪记忆能保存到什么程度？” 你的问题应具体并与认知理论相联系。
Task 2: Outline how you would gather data over a two‑week period. Consider daily interviews, video recordings of his piano playing, and a structured diary kept by his wife. Explain how you would triangulate these sources. Task 3: Identify two ethical safeguards you would implement, referring to BPS principles. For instance, you would produce a simplified information sheet for the wife and maintain confidentiality by using the pseudonym “CW” in all publications.
任务二：概述你将在两周内如何收集数据。考虑每日访谈、对他钢琴演奏的录像，以及由他妻子记录的结构化日记。解释你将如何对这些来源进行三角验证。任务三：指出你将实施的两项伦理保护措施，并引用 BPS 原则。例如，你会为妻子制作一份简化版信息表，并在所有出版物中使用化名 “CW” 来保密。
After completing these tasks, write a brief conclusion mirroring the format of an exam answer: “This case study would provide rich, idiographic data that could shed light on memory systems. However, the intense emotional involvement of a family member as co‑researcher may introduce bias, reducing objectivity.” Such reflective statements demonstrate high‑evaluation skills.
完成这些任务后，写一个模仿考试答案格式的简短结论：”该案例研究将提供丰富的特殊性资料，能阐明记忆系统的机制。然而，家庭成员作为合作研究者的高度情感卷入可能引入偏见，降低客观性。” 这样反思性的陈述能展示高级评价技能。
9. Strengths and Limitations of Case Studies | 案例研究的优势与局限
Strengths often lie in the depth and detail captured. Case studies can reveal insights that superficial surveys miss and can generate new hypotheses for future testing. They are also particularly valuable for studying rare or ethically sensitive conditions where an experimental design would be impossible.
优势往往在于所捕捉到的深度和细节。案例研究能揭示表层问卷所遗漏的见解，并能生成供未来检验的新假设。它们对于研究实验设计无法开展的罕见或伦理敏感状况尤其有价值。
Another strength is the ecological validity of the data. Because the research takes place in the participant’s natural environment or captures real‑life experiences, the findings are highly relevant to understanding that person’s lived world. This can enrich therapeutic applications and inform individualised interventions.
另一优势是数据的生态效度。因为研究发生在被试的自然环境或捕捉了真实生活经历，研究结果对于理解该人的生活世界高度相关。这能丰富治疗应用，并为个体化干预提供信息。
Limitations stem from the unique‑N problem. With only one participant, it is dangerous to generalise to the wider population. Moreover, the researcher’s long‑term involvement can lead to subjectivity and a loss of detachment. Retrospective data may be inaccurate due to memory decay or distortion. Always balance your evaluation with both sides when answering exam questions.
局限源于个案数量单一。只有一位被试，推广到更广泛人群是危险的。此外，研究者的长期卷入可能导致主观性和丧失疏离感。回溯性数据可能因记忆衰退或扭曲而不准确。在回答考试题目时，始终要用两个方面的论点来平衡你的评价。
10. Exam Tips for Tackling Case Study Questions | 应对案例研究题的考试技巧
Edexcel AS papers often present a short vignette or description of a case study and ask you to apply your methods knowledge. Start by underlining the key details: the type of participant, duration, data sources, and any ethical issues mentioned. Then structure your answer around the command term—whether it is “describe”, “evaluate”, or “discuss”.
Edexcel AS 试卷常常呈现一小段案例研究的描述，要求你应用研究方法知识。开始时，划出关键信息：被试类型、时长、数据来源以及提及的任何伦理问题。然后根据指令词——无论是 “描述”、”评价” 还是 “讨论”——来组织你的答案。
When evaluating, use the GRAVE framework (Generalisability, Reliability, Application, Validity, Ethics). For instance, comment that the study may lack population validity because the participant is unique, but it may have high internal validity if the researcher spent many months building trust. Always support your points with specific references from the stem.
进行评价时，使用 GRAVE 框架（可推广性、信度、应用、效度、伦理）。例如，评论该研究可能缺乏人群效度，因为被试是独特的，但如果研究者花费数月建立信任关系，则可能具有高内部效度。始终用题干中的具体引用来支持你的观点。
Timing is critical. For a 12‑mark evaluate question, spend about 15 minutes: 3 minutes reading and planning, 9 minutes writing two well‑developed evaluation paragraphs, and 3 minutes checking your ethical points and terminology. Practice with past papers, re‑analysing the HM and Clive Wearing cases until you can effortlessly apply your methodological vocabulary.
时间控制至关重要。对于一道 12 分的评价题，花大约 15 分钟：3 分钟阅读和规划，9 分钟写出两个充分展开的评价段落，再用 3 分钟检查伦理要点和术语。用历年真题进行练习，反复分析 HM 和克莱夫·韦尔林的案例，直到你能娴熟地运用研究方法词汇。
11. Building Your Own Case Study for Deeper Learning | 组建自己的案例研究以深化学习
To truly master the methodology, try designing a miniature case study yourself. Select a volunteer (such as a classmate) and investigate a focused question like “How does this person use revision strategies for AS Psychology?” Over one week, combine a daily journal, a brief interview, and a self‑report scale. Analysing even this tiny dataset will give you first‑hand insight into the practical challenges researchers face.
要真正掌握该方法，不妨自己设计一个小型案例研究。选择一位志愿者（例如一名同学），调查一个集中的问题，如 “此人如何运用复习策略备考 AS 心理学？” 在一周内，结合每日日志、简短访谈和自评量表。即便是分析这样微小的数据集，也能让你亲身体验研究者面临的实际挑战。
Reflect on what worked and what did not. Did the participant become self‑conscious? Were your interview questions leading? This reflective practice—metacognition about research—will sharpen your ability to critically evaluate published case studies in the exam. Plus, you will gain memorable, concrete examples to use in your written answers, showing the examiner that your understanding goes beyond the textbook.
反思哪些有效、哪些无效。参与者是否变得自我意识过强？你的访谈问题是否有引导性？这种反思性练习——对研究的元认知——将提高你在考试中批判性评价已发表案例研究的能力。此外，你会获得难忘的具体例子用于书面答案，向考官展示你的理解远超课本。
12. Conclusion: From Knowledge to Skill | 结语：从知识到技能
Case study analysis is a skill that grows with practice. By working through the features, design principles, and ethical dimensions, and by actively analysing cases like HM and Clive Wearing, you transform passive knowledge into an active toolkit. In the AS exam room, this means you can confidently unpack any case study stimulus, articulate thoughtful evaluations, and place your answer right inside the top mark bands.
案例分析是一种随练习而成长的技能。通过梳理特征、设计原则和伦理维度，并主动分析像 HM 和克莱夫·韦尔林这样的案例，你将被动知识转化为主动的工具箱。在 AS 考场中，这意味着你可以自信地拆解任何案例研究材料，清晰表达经过深思的评价，并将答案稳稳地锁定在高分段。
Published by TutorHao | Psychology Revision Series | aleveler.com
更多咨询请联系16621398022（同微信）
屏轩国际教育cambridge primary/secondary checkpoint, cat4, ukiset,ukcat,igcse,alevel,PAT,STEP,MAT, ibdp,ap,ssat,sat,sat2课程辅导，国外大学本科硕士研究生博士课程论文辅导Cancel reply