📚 Year 8 CAIE Psychology: Unit Test Mock Paper Walkthrough | Year 8 CAIE 心理学：单元测试模拟卷解析
Welcome to this detailed walkthrough of a mock unit test designed for Year 8 CAIE Psychology. The paper covers foundational topics including research methods, memory, attachment, social influence and cognitive development. Each question is followed by a thorough explanation that not only gives the correct answer but also reinforces the key concepts and exam techniques you need to master. Use this guide to identify your strengths, fill gaps in your understanding and boost your confidence before the real assessment.
欢迎阅读这份为 Year 8 CAIE 心理学设计的单元测试模拟卷解析。试卷涵盖研究方法、记忆、依恋、社会影响和认知发展等基础主题。每道题目后都附有详尽解释，不仅给出正确答案，还巩固了你需要掌握的关键概念和考试技巧。使用这份指南找到你的强项，补齐知识漏洞，并在真实评估前提升信心。
1. Research Variables | 研究变量
Question: A psychologist wants to test if listening to music improves memory recall. She asks one group to memorise a list of words while listening to classical music and another group to memorise in silence. What is the independent variable (IV) and what is the dependent variable (DV)?
问题：一位心理学家想测试听音乐是否能提高记忆回忆。她让一组被试一边听古典音乐一边记忆单词，另一组在安静环境中记忆。什么是自变量(IV)，什么是因变量(DV)?
er of words correctly recalled. The independent variable is the factor the researcher deliberately manipulates. Here she chooses whether participants hear music or not. The dependent variable is the outcome she measures – in this case memory recall. A simple way to remember is that the DV depends on the IV. Everything else, such as the word list difficulty and time allowed, must be kept constant so they do not become confounding variables.
正确的识别是：IV = 是否有音乐；DV = 正确回忆的单词数量。自变量是研究者有意操控的因素，这里她选择被试是否听音乐。因变量是她测量的结果——即记忆回忆。一种简单的记忆方法是：DV 取决于 IV。所有其他因素，如单词难度和允许的时间，都必须保持不变，以免成为混淆变量。
In CAIE Psychology, you will often be asked to operationalise variables – that means stating exactly how you will measure or change them. An operationalised IV could be “listening to Mozart’s Sonata for 10 minutes versus sitting in silence for 10 minutes”, and an operationalised DV could be “the number of words from a 20-word list recalled after a 2-minute distractor task”. Being precise shows the examiner you understand how to design a valid experiment.
在 CAIE 心理学中，你经常会被要求将变量操作化——即准确说明你将如何测量或改变它们。操作化的 IV 可以是“听莫扎特奏鸣曲10分钟对比静坐10分钟”，操作化的 DV 可以是“在2分钟干扰任务后，从20个单词列表中回忆出的单词数量”。表达精确能向考官展示你懂得如何设计有效的实验。
2. Experimental and Control Groups | 实验组与对照组
Question: In the music-and-memory experiment, what is the purpose of the group that memorises without music?
问题：在音乐与记忆实验中，没有音乐的那一组起什么作用？
That group serves as the control group. A control group provides a baseline against which the experimental group can be compared. If the group with music recalls significantly more words than the control group, we can be more confident that music had an effect. Without a control group, you cannot tell whether the results are due to the independent variable or to other factors such as practice or natural memory ability.
那一组充当对照组。对照组提供了一个基线，以便与实验组进行比较。如果听音乐的那组比对照组回忆起更多的单词，我们就能更有信心地认为音乐产生了效果。没有对照组，你无法判定结果是由自变量引起，还是由练习或自然记忆能力等其他因素所致。
Avoid the common mistake of thinking the control group receives a “lower” version of the treatment – it receives no treatment on the IV. In some studies a placebo control is used when participants expect a treatment, such as a sugar pill in a drug trial. Being able to identify the purpose of a control group is a key skill for the research methods section of your exam.
避免一个常见错误：认为对照组接受了“较低”版本的处理——它在 IV 上没有接受任何处理。在一些研究中，当被试预期会接受某种处理时，会使用安慰剂对照，比如药物试验中的糖丸。能够识别对照组的作用是你考试中研究方法部分的一项关键技能。
3. Sampling Methods | 抽样方法
Question: A researcher wants to investigate teenagers' sleep patterns. She puts an advertisement on a social media platform asking for volunteers. Is this a random sample? Explain your reasoning.
问题：一位研究者想调查青少年的睡眠模式。她在社交媒体平台上发布广告招募志愿者。这是一个随机样本吗？请说明理由。
No, this is not a random sample; it is a volunteer (self-selected) sample. In a random sample every member of the target population has an equal chance of being chosen, which helps to avoid bias. With a social media advert, only teenagers who see the advert, are interested and have the time will volunteer. This often leads to a biased sample that may not represent all teenagers – for example, those without internet access or those less motivated by psychology studies are excluded.
不，这不是随机样本；这是一个志愿者（自选）样本。在随机样本中，目标人群中的每个成员都有同等的机会被选中，这有助于避免偏差。通过社交媒体广告招募，只有看到广告、感兴趣并且有时间的青少年才会报名。这往往导致一个有偏差的样本，不能代表所有青少年——例如，那些没有网络连接或者不那么受心理学研究激励的人就被排除在外。
In your CAIE exam you may be asked to suggest a better sampling method. A stratified sample could work: identify subgroups (e.g. age, gender, school type) in the teenage population and then randomly select participants from each subgroup in proportion to their numbers. Being able to evaluate sampling methods with clear explanations of bias and representativeness earns top marks.
在你的 CAIE 考试中，你可能会被要求提出更好的抽样方法。分层抽样可以行得通：确定青少年群体中的子群（如年龄、性别、学校类型），然后按比例从每个子群中随机选择参与者。能够清晰地解释偏差与代表性来评价抽样方法，才能赢得高分。
4. Multi-Store Model of Memory | 记忆的多重存储模型
Question: According to Atkinson and Shiffrin, what process transfers information from sensory memory to short-term memory?
问题：根据阿特金森和谢夫林的理论，信息通过什么过程从感觉记忆转入短时记忆？
The correct answer is attention. The multi-store model proposes three separate stores: sensory memory, short-term memory (STM) and long-term memory (LTM). Sensory memory holds information from the senses for less than a second. If we pay attention to that information, it moves into STM, where it can be held for about 15-30 seconds. Rehearsal then transfers information from STM to LTM for permanent storage.
正确答案是注意。多重存储模型提出了三个独立的存储库：感觉记忆、短时记忆(STM)和长时记忆(LTM)。感觉记忆以极短时间（不足一秒）保存来自感官的信息。如果我们对信息加以注意，它就会进入STM，在那里可以保持约15到30秒。复述则将信息从STM转移至LTM，成为永久存储。
Let's summarise the features of each store in a table:
下表总结了每个存储库的特点：
| Store / 存储 | Capacity / 容量 | Duration / 持续时间 | Coding / 编码 |
|---|---|---|---|
| Sensory memory / 感觉记忆 | Very large / 非常大 | Less than 1 second / 不足1秒 | Modality-specific (e.g. iconic, echoic) / 特定感觉通道（如图像、声像） |
| Short-term memory / 短时记忆 | 7±2 items / 7±2 个组块 | 15-30 seconds / 15–30秒 | Mainly acoustic / 主要为听觉编码 |
| Long-term memory / 长时记忆 | Potentially unlimited / 潜在地无限 | Up to a lifetime / 可长达一生 | Mainly semantic / 主要为语义编码 |
Many exam questions ask students to apply the model to real-life examples, such as why we remember a phone number just long enough to dial it (STM) or why we can recall the smell of a childhood kitchen (LTM). Practise linking each store's features to such scenarios.
许多考试题目要求学生将模型应用于现实生活的例子，例如为什么我们能记住一个电话号码刚好够拨号（STM），或者为什么我们能回忆起童年厨房的气味（LTM）。练习将每个存储库的特点与这些情境联系起来。
5. Forgetting and the Ebbinghaus Curve | 遗忘与艾宾浩斯曲线
True or False: Ebbinghaus's forgetting curve shows that forgetting is slow at first and then speeds up over time.
判断正误：艾宾浩斯的遗忘曲线表明，遗忘在开始时缓慢，随后随时间加快。
This statement is false. Ebbinghaus found that forgetting is rapid immediately after learning and then levels off. He memorised lists of nonsense syllables and tested himself after various intervals. The largest drop in recall occurred within the first hour; after that, the rate of forgetting slowed. The curve is steep at the start and gradually flattens.
这个陈述是错误的。艾宾浩斯发现，遗忘在学习后即刻迅速发生，然后趋于平缓。他记忆无意义音节表，并在不同时间间隔后测试自己。回忆量的最大下降发生在第一个小时内；此后，遗忘速率减慢。曲线开始陡峭，随后逐渐平缓。
This research has practical implications. Because forgetting is fastest right after a lesson, it is wise to review your notes the same day. Spaced repetition, where you revisit material at increasing intervals, directly applies Ebbinghaus's findings. In an exam, you could be asked to draw or interpret the curve, so be prepared to label the axes: time on the horizontal axis and percentage of information retained on the vertical axis.
这项研究具有实际意义。因为遗忘在学习后最快，所以在同一天复习笔记是明智的。间隔重复——即按不断增加的间隔重新接触材料——直接应用了艾宾浩斯的发现。在考试中，你可能会被要求绘制或解读这条曲线，因此准备好标注坐标轴：横轴为时间，纵轴为信息保留的百分比。
6. Attachment Types in the Strange Situation | 陌生情境中的依恋类型
Question: In Ainsworth's Strange Situation, a child shows distress when the caregiver leaves, seeks contact upon reunion and is easily comforted, then quickly returns to playing. Which attachment type is this?
问题：在安斯沃斯的陌生情境中，一个孩子在照顾者离开时表现出痛苦，重聚时寻求接触并容易被安慰，然后很快继续玩耍。这属于哪种依恋类型？
This behaviour describes a secure attachment. Ainsworth identified three main attachment types: secure, insecure-avoidant and insecure-resistant. Securely attached children use their caregiver as a safe base from which to explore. They show distress during separation but are happy and calm when the caregiver returns. About 65-70% of children in many samples are classified as secure.
这种行为描述的是安全型依恋。安斯沃斯识别了三种主要依恋类型：安全型、不安全-回避型和不安全-反抗型。安全型依恋的儿童将照顾者作为探索的安全基地。他们在分离时表现出痛苦，但当照顾者返回时变得高兴和镇静。在许多样本中，约65%–70%的儿童被归为安全型。
Insecure-avoidant children tend to ignore the caregiver and show little distress on separation; insecure-resistant children are clingy, very distressed when left, and not easily comforted upon reunion. A fourth type, disorganised, was added later. For the exam, remember to link attachment types to the quality of caregiving: sensitive, responsive care tends to produce secure attachments.
不安全-回避型儿童倾向于忽视照顾者，分离时几乎不显痛苦；不安全-反抗型儿童则过度粘人，被留下时非常痛苦，重聚时不易被安慰。后来加入了第四种类型——紊乱型。考试时，记住要把依恋类型与照顾质量联系起来：敏感、有回应的照顾往往产生安全型依恋。
7. Conformity: Asch's Line Study | 从众：阿希线段研究
Question: In Asch's original study, what percentage of participants conformed to the group's wrong answer on at least one critical trial?
问题：在阿希的原始研究中，有多少百分比的参与者在至少一个关键试次中从众给出了错误答案？
The figure is approximately 75%. Asch asked participants to judge the length of lines in the presence of confederates who deliberately gave incorrect answers. Although the task was easy, about three-quarters of participants conformed at least once. Across all trials, the average conformity rate was around 37%. This tells us that most people feel pressure to agree with the majority even when the majority is clearly wrong.
这个数字大约是75%。阿希让参与者在故意给出错误答案的同谋者面前判断线段长度。尽管任务很简单，约四分之三的参与者至少一次从众。所有试次的平均从众率大约为37%。这说明即使多数人明显错误，大多数人还是会感到同意多数的压力。
Asch also identified factors that reduce conformity, such as having an ally who gives the correct answer, writing answers privately or reducing the size of the majority. When you answer questions on this classic study, always specify the conditions and the key statistics – examiners expect precise knowledge, not vague descriptions.
阿希还发现了减少从众的因素，例如有一个给出正确答案的盟友、私下写出答案或者缩小多数派的人数。当你回答有关这项经典研究的问题时，一定要说明条件和关键统计数据——考官期望精确的知识，而非模糊的描述。
8. Obedience: Milgram's Shock Experiment | 服从：米尔格拉姆电击实验
True or False: Milgram found that about 65% of participants were willing to deliver the maximum 450-volt shock to a learner.
判断正误：米尔格拉姆发现，大约65%的参与者愿意向学习者施加最高450伏的电击。
The statement is true. Milgram recruited participants for a “learning” experiment where they were ordered by an authority figure to give increasingly strong electric shocks to a confederate. Despite hearing cries of pain (which were fake), 65% continued to the maximum level. This study demonstrated the powerful influence of authority on obedience.
这个陈述是正确的。米尔格拉姆招募参与者参加一项“学习”实验，在实验中他们被权威人物命令对同谋者施加越来越强的电击。尽管听到了（虚假的）痛苦叫声，65%的人仍然继续施加到最高电压。这项研究证明了权威对服从的强大影响力。
Evaluation points you should know: the study lacked
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