Psychology Experiments: Classic Paradigms and Exam Answer Skills | 心理学实验：经典范式与答题要点

📚 Psychology Experiments: Classic Paradigms and Exam Answer Skills | 心理学实验：经典范式与答题要点

Psychology is an empirical science, and experimental methods form its backbone. In A-Level and IB exams, students are frequently asked to evaluate classic studies, identify variables, and design their own experiments. This article introduces the most tested classic paradigms in psychology and provides a structured framework for answering exam questions with precision and depth.

心理学是一门实证科学，实验方法构成了它的核心支柱。在A-Level和IB考试中，学生经常被要求评价经典研究、识别变量、甚至独立设计实验。本文介绍心理学考试中最常出现的经典范式，并提供一个结构化答题框架，帮助你在考试中精准而有深度地作答。

1. Experimental Basics: IV, DV, and Controls | 实验基础：自变量、因变量与控制

Every psychology experiment manipulates an independent variable (IV) and measures a dependent variable (DV). Extraneous variables must be controlled to establish cause-and-effect relationships. In exam answers, you must clearly state which variable was manipulated and how the effect was measured.

每个心理学实验都会操控一个自变量（IV）并测量一个因变量（DV）。为了建立因果关系，必须控制额外变量。在答题时，你必须要清楚地说明哪个变量被操控了，以及结果是如何被测量的。

Independent variable: the factor that the researcher changes. For example, in a memory study, the IV might be the word list length.
自变量：研究者改变的因素。例如，在记忆研究中，自变量可能是词表的长度。
Dependent variable: the measurable outcome. In the same study, the DV could be the number of words correctly recalled.
因变量：可测量的结果。在同一研究中，因变量可以是正确回忆的单词数量。
Confounding variables: factors that vary systematically with the IV, threatening internal validity. Random allocation and standardized procedures help address these.
混淆变量：与自变量一起系统变化的因素，威胁内部效度。随机分配和标准化程序有助于解决这些问题。

Cause-and-effect reasoning: IV → DV, with all other variables held constant.

因果推理：自变量 → 因变量，同时保持所有其他变量恒定。

2. Classic Paradigm One: Obedience and Conformity | 经典范式一：服从与从众

Milgram’s obedience study (1963) and Asch’s conformity study (1951) are the two most frequently cited social psychology experiments. Milgram measured the willingness of participants to administer electric shocks to a “learner” under the instruction of an authority figure. Asch measured whether participants would give an obviously wrong answer to fit in with a group.

米尔格拉姆的服从研究（1963）和阿希的从众研究（1951）是社会心理学中被引用最多的两个实验。米尔格拉姆测量了参与者在权威人物指示下对”学习者”施加电击的意愿；阿希则测量了参与者是否会为了与群体一致而给出明显错误的答案。

For exam answers, remember the key figures: in Milgram’s baseline study, 65% of participants administered the maximum 450-volt shock. In Asch’s line-judgment task, participants conformed on about 37% of critical trials, with 75% conforming at least once.

答题时请记住关键数据：在米尔格拉姆的基线研究中，65%的参与者施加了最大450伏的电击。在阿希的线段判断任务中，参与者在约37%的关键试验中从众，75%的人至少从众一次。

Evaluation point — ethical issues: Milgram’s participants experienced extreme psychological distress, though 84% later said they were glad to have participated.
评价要点——伦理问题：米尔格拉姆的参与者经历了极端的心理压力，尽管84%的人事后表示很高兴参与。
Evaluation point — ecological validity: Asch’s artificial laboratory task lacks realism; conformity in everyday life may involve different processes.
评价要点——生态效度：阿希的人工实验室任务缺乏现实性；日常生活中的从众可能涉及不同过程。

3. Classic Paradigm Two: Memory and Eyewitness Testimony | 经典范式二：记忆与目击者证词

Loftus and Palmer (1974) demonstrated the misinformation effect in a landmark study using leading questions. Participants who were asked how fast cars were going when they “smashed” into each other estimated higher speeds than those who heard the word “contacted.”

洛夫特斯和帕尔默（1974）在一项里程碑式研究中，用引导性问题证明了错误信息效应。被问及汽车”撞碎”（smashed）时速度有多快的参与者，比听到”接触”（contacted）一词的参与者估计出更高的速度。

For exam purposes, know the two experiments within this study: Experiment 1 measured speed estimates with different verbs; Experiment 2 measured whether the verb affected memory of broken glass. Both support the idea that post-event information can alter memory reconstruction.

为了应试，你需要了解该研究中的两个子实验：实验1测量不同动词对速度估计的影响；实验2测量动词是否影响对碎玻璃的记忆。两者都支持事后信息能改变记忆重构的观点。

Misinformation effect: original memory + post-event information → altered recollection

错误信息效应：原始记忆 + 事后信息 → 被改变的记忆

Baddeley (1966) is another classic: he found that acoustically similar words were harder to recall from short-term memory, supporting the phonological loop. This study frequently appears in cognitive psychology questions about memory models.

巴德利（1966）是另一个经典研究：他发现发音相似的词更难从短时记忆中回忆出来，支持了语音环路模型。该研究经常出现在关于记忆模型的认知心理学题目中。

4. Classic Paradigm Three: Attachment and Maternal Deprivation | 经典范式三：依恋与母爱剥夺

In developmental psychology, Ainsworth’s Strange Situation (1970) is the canonical paradigm. She observed infants aged 12–18 months in a series of separations and reunions with their caregiver, classifying attachment into secure, insecure-avoidant, and insecure-resistant patterns.

在发展心理学中，安斯沃斯的”陌生情境”实验（1970）是经典范式。她观察了12至18个月大的婴儿与照护者之间一系列分离与重聚的过程，将依恋类型划分为安全型、不安全-回避型和不安全-抗拒型。

Exam questions often ask you to identify the behaviors that distinguish each type. Secure infants explore confidently and greet the caregiver warmly upon reunion; avoidant infants ignore the caregiver; resistant infants show anger and cannot be comforted easily.

考试题经常要求你区分各依恋类型的行为特征。安全型婴儿能自信探索，并在重聚时热情地迎接照护者；回避型婴儿忽视照护者；抗拒型婴儿表现愤怒且难以被安抚。

Harlow’s monkey studies (1958) are also essential. Infant monkeys preferred a cloth surrogate mother over a wire one even when the wire mother provided food, demonstrating that contact comfort is more important than feeding for attachment formation.

哈洛的恒河猴实验（1958）同样必不可少。幼猴即使在有食物供应的铁丝母猴存在时，仍然更喜欢布质母猴，证明接触安慰比进食对依恋形成更重要。

5. Classic Paradigm Four: Learning Theories | 经典范式四：学习理论范式

Classical conditioning, operant conditioning, and social learning theory each have defining experiments. Pavlov’s dogs learned to salivate at a neutral stimulus (bell) when it was repeatedly paired with food. This S–R association is the foundation of behaviorist explanations of phobias and taste aversion.

经典条件反射、操作性条件反射和社会学习理论各有其标志性实验。巴甫洛夫的狗在铃声与食物反复配对后，会对中性刺激（铃声）产生唾液分泌反应。这种刺激-反应联结是行为主义解释恐惧症和味觉厌恶的基础。

Skinner’s operant conditioning paradigm used the Skinner box to demonstrate reinforcement and punishment. A rat that presses a lever to receive food is under positive reinforcement. Exam questions often require you to distinguish between positive reinforcement, negative reinforcement, and punishment.

斯金纳的操作性条件反射范式使用斯金纳箱来证明强化与惩罚。按压杠杆获得食物的大鼠处于正强化之中。考试题经常要求你区分正强化、负强化和惩罚。

Bandura’s Bobo doll study (1961) showed that children who observed an adult acting aggressively toward a doll were more likely to imitate that aggression. This study is a classic example of vicarious learning and is often used to discuss media violence effects.

班杜拉的面团娃娃实验（1961）表明，观察到成人对娃娃实施攻击行为的儿童更可能模仿该攻击行为。该研究是替代学习的经典例证，常用于讨论媒体暴力的影响。

Remember the four conditions in Bandura’s study: aggressive model, non-aggressive model, same-sex model, opposite-sex model.
记住班杜拉研究中的四种条件：攻击性榜样、非攻击性榜样、同性榜样、异性榜样。

6. Classic Paradigm Five: Biological and Stress Responses | 经典范式五：生物与应激反应范式

Selye’s General Adaptation Syndrome (GAS) provides a physiological framework for stress responses. It consists of three stages: alarm, resistance, and exhaustion. This paradigm is frequently tested in health psychology questions.

塞利的全身适应综合征（GAS）为应激反应提供了生理学框架。它包含三个阶段：警觉期、抵抗期和耗竭期。这一范式在健康心理学题目中频繁出现。

The “executive monkey” study by Brady (1958) — despite later methodological criticism — is a classic exam example. Monkeys that could press a lever to avoid electric shocks developed more stomach ulcers than yoked control monkeys who received identical shocks without control.

布雷迪（1958）的”行政猴”研究——尽管后来受到方法论批评——是一个经典考试案例。能按压杠杆避免电击的猴子比接受相同电击但无控制权的配对对照组猴子出现了更多的胃溃疡。

Critically, examiners expect you to comment on the study’s limitations: the results may have been influenced by pre-existing individual differences, and the yoked design does not fully control for all confounds.

关键的是，考官期望你评述该研究的局限：结果可能受到预先存在的个体差异影响，配对设计并未完全控制所有混淆变量。

7. Research Methods: How to Analyse an Experiment | 研究方法：如何分析一项实验

When asked to evaluate an experiment, follow this systematic structure: first identify the research aim and hypothesis; second, state the IV and DV; third, describe the experimental design (independent measures, repeated measures, or matched pairs); fourth, discuss sampling method; and finally, evaluate validity, reliability, and ethics.

当被要求评价实验时，请遵循这一系统性结构：第一，明确研究目的与假设；第二，说明自变量与因变量；第三，描述实验设计（被试间设计、被试内设计或匹配组设计）；第四，讨论抽样方法；最后，评价效度、信度与伦理问题。

Use technical vocabulary precisely: “demand characteristics” refer to cues that make participants guess the research aim; “investigator effects” refer to the researcher’s influence on participants’ behavior.

精准使用术语：”需求特征”指让参与者猜测研究目的的线索；”研究者效应”指研究者对参与者行为的影响。

Reliability: consistency of results. Check whether procedures were standardized and whether test–retest reliability was established.
信度：结果的一致性。检查程序是否标准化，以及是否建立了重测信度。
Internal validity: the extent to which the IV truly caused the DV change. Consider whether any confounding variables exist.
内部效度：自变量真正导致因变量变化的程度。考虑是否存在混淆变量。
External validity: the generalizability of findings across people, settings, and time.
外部效度：研究结果在人、情境和时间上的推广能力。

8. The Six-Dimension Evaluation Framework | 六维评价框架

A high-scoring evaluation should not stop at naming one strength and one weakness. Use the following six dimensions to structure a balanced and thorough critique.

高分的评价不能止步于提出一个优点和一个缺点。请使用以下六个维度来组织一个平衡且全面的评论。

Dimension \| 维度	Key Question \| 核心问题
Internal validity \| 内部效度	Were all confounds controlled?
External validity \| 外部效度	Can we generalize beyond the sample?
Reliability \| 信度	Would we get the same results again?
Ethics \| 伦理	Were participants protected from harm?
Sampling \| 抽样	Was the sample representative?
Practical applications \| 实际应用	Does the study inform real-world practice?

When writing evaluations, use the “Point–Evidence–Explanation” chain: make a point, cite the evidence, then explain its significance with reference to the specific study.

写评价时使用”观点-证据-解释”链条：提出一个观点，引用证据，再结合具体研究解释其重要性。

9. Answering Exam Questions: The PEEL Structure | 答题策略：PEEL结构

For short-answer and essay questions, PEEL is a reliable framework: Point, Evidence, Explain, Link. This structure ensures that every paragraph is focused and well-developed.

对于简答题和论述题，PEEL是一个可靠框架：观点（Point）、证据（Evidence）、解释（Explain）、联系（Link）。这个结构确保每个段落都聚焦且充分展开。

Point: State the psychological concept or argument clearly in one sentence.
观点：用一句话清晰地陈述心理学概念或论点。
Evidence: Cite a specific study, including the researcher, year, and key findings.
证据：引用具体研究，包括研究者、年份和关键发现。
Explain: Explain how the evidence supports the point. Discuss what the finding implies about human behavior.
解释：说明证据如何支持观点，并讨论该发现对人类行为的启示。
Link: Link back to the question or to a broader psychological issue.
联系：回到题目本身，或联系更广泛的心理学议题。

For example, if the question asks about factors affecting conformity, you could use PEEL to discuss Asch’s findings on group size: as group size increased from one to three confederates, conformity rates rose, but they plateaued beyond five.

例如，如果题目问影响从众的因素，你可以用PEEL讨论阿希关于群体规模的发现：当伪被试人数从1人增加到3人时，从众率上升；但超过5人后趋于稳定。

10. Common Mistakes to Avoid | 常见错误与避坑指南

Examiners frequently penalize students for vague descriptions, missing names and years, or confusing research methods. Precision is the key to top marks.

考官经常因描述模糊、缺少研究者姓名和年份，或混淆研究方法而扣分。精准是获得高分的关键。

Mistake 1: Writing “a study showed” without naming the researcher. Always cite: “Milgram (1963) found…”
错误一：只写”一项研究显示”而不写研究者姓名。务必写：”米尔格拉姆（1963）发现……”
Mistake 2: Confusing the IV with the DV. Practice rewriting experimental descriptions in the form: IV was…, DV was measured by…
错误二：混淆自变量与因变量。练习用以下句式重写实验描述：自变量是……，因变量通过……来测量。
Mistake 3: Overly one-sided evaluations. Balance your strengths and limitations for a top-band answer.
错误三：评价过于片面。平衡地写出优点和局限，才能获得最高分段。
Mistake 4: Forgetting ethical protections. In design questions, always include debriefing, informed consent, and the right to withdraw.
错误四：忘记伦理保护。在设计题中，务必要包括事后说明、知情同意和退出权。

11. Revising with Paradigms in Mind | 以范式为线索进行复习

Instead of memorizing studies in isolation, group them by paradigm. For example, when revising social influence, organize studies under obedience and conformity; when revising memory, group studies under short-term and long-term memory models.

不要孤立地记忆研究，而应按范式进行归类。例如，复习社会影响时，将研究归入服从和从众两个类别；复习记忆时，将研究归入短时记忆和长时记忆模型。

Create a concise study card for each classic experiment: the aim, method, sample, key findings, and two strengths plus two limitations. This compact format is ideal for last-minute revision.

为每个经典实验制作一张简洁的研究卡片：目的、方法、样本、关键发现，以及两个优点加两个局限。这种紧凑的格式非常适合考前冲刺复习。

Study card formula: Aim → Method → Sample → Findings → Evaluation.

学习卡公式：目的 → 方法 → 样本 → 发现 → 评价。

12. Final Tips for Exam Day | 考场最终建议

Read each question carefully and identify the command word: “describe” requires only descriptive content; “evaluate” requires judgment with evidence; “discuss” requires both. Underline the command word before you start writing.

仔细阅读每道题目，识别指令词：”描述”只要求描述性内容；”评价”要求基于证据做出判断；”讨论”要求两者兼顾。开始写作前请先划出指令词。

Time management is critical. For a 10-mark question, allocate roughly 15–18 minutes. For a 20-mark essay, allow 30–35 minutes, keeping the last five minutes for a quick review of signposting and terminology.

时间管理至关重要。10分题大约分配15至18分钟；20分论述题分配30至35分钟，最后留出5分钟快速检查路标词和术语使用。

Finally, write at least two named studies per major topic. Depth and specificity are what separate A-grade answers from B-grade ones.

最后，每个大主题至少写两个具名研究。深度和具体性是A级答案与B级答案的分水岭。

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Dimension \| 维度	Key Question \| 核心问题
Internal validity \| 内部效度	Were all confounds controlled?
External validity \| 外部效度	Can we generalize beyond the sample?
Reliability \| 信度	Would we get the same results again?
Ethics \| 伦理	Were participants protected from harm?
Sampling \| 抽样	Was the sample representative?
Practical applications \| 实际应用	Does the study inform real-world practice?

Psychology Experiments: Classic Paradigms and Exam Answer Skills | 心理学实验：经典范式与答题要点