📚 Year 9 OCR Psychology: Unit Test Mock Paper Walkthrough | Year 9 OCR 心理学：单元测试模拟卷解析
Welcome to this detailed walkthrough of a Year 9 OCR Psychology unit test mock paper. This resource is designed to help you revise key concepts, understand typical question formats, and learn how to structure model answers. The questions cover essential topics such as research methods, memory, social influence, attachment, psychological problems, and ethics. By working through each question with fully explained English-Chinese paired analysis, you will strengthen both your subject knowledge and exam technique.
欢迎阅读这篇 Year 9 OCR 心理学单元测试模拟卷的详细解析。本资源旨在帮助你复习关键概念、了解常见题型，并学会如何组织标准答案。题目涵盖研究方法、记忆、社会影响、依恋、心理问题与伦理等重要主题。通过每一个配有中英对照解析的题目，你将巩固学科知识并提升考试技巧。
1. Question 1: Identifying Independent and Dependent Variables | 问题1：识别自变量和因变量
Question: In a study, researchers want to test whether caffeine affects memory. One group of participants drinks a caffeinated beverage, while another group drinks a decaffeinated version. Afterwards, both groups take a word recall test. Identify the independent variable (IV) and the dependent variable (DV).
问题：在研究中，研究者想测试咖啡因是否影响记忆。一组参与者饮用含咖啡因的饮料，另一组饮用不含咖啡因的饮料。之后，两组都参加单词回忆测试。请指出自变量（IV）和因变量（DV）。
The independent variable is the presence or absence of caffeine (caffeinated vs. decaffeinated). This is the factor the researcher deliberately changes or manipulates.
自变量是是否摄入咖啡因（含咖啡因与不含咖啡因）。这是研究者有意改变或操纵的因素。
The dependent variable is the memory performance, measured by the word recall test score. The DV is what the researcher measures to see the effect of the IV.
因变量是记忆表现，通过单词回忆测试得分来衡量。因变量是研究者为了观察自变量的影响而测量的指标。
In experimental research, it is crucial to operationalise variables clearly. Here, caffeine intake is operationalised as the type of drink, and memory is operationalised as recall score.
在实验研究中，清晰地操作化变量至关重要。此例中，咖啡因摄入被操作化为饮料类型，记忆被操作化为回忆得分。
2. Question 2: Independent Groups Design | 问题2：独立组设计
Question: A researcher compares two teaching methods by splitting a class into two groups. Group A uses Method X, Group B uses Method Y. At the end, all students take the same test. Name the experimental design used, and give one strength and one weakness of this design.
问题：一位研究者通过将一个班级分成两组来比较两种教学方法。A组使用X方法，B组使用Y方法。最后所有学生参加相同的测试。请说出所使用的实验设计，并给出该设计的一个优点和一个缺点。
The design is an independent groups design (also called independent measures design). In this design, different participants are used in each condition of the experiment.
该设计是独立组设计（也称独立测量设计）。在这种设计中，实验的每个条件下使用不同的参与者。
One strength of independent groups design is that there are no order effects. Participants only take part in one condition, so they do not suffer from practice, boredom or fatigue that could influence the second condition.
独立组设计的一个优点是没有顺序效应。参与者只参加一个条件，因此他们不会受到练习、厌倦或疲劳的影响，而这些因素可能会干扰第二个条件。
One weakness is that participant variables (individual differences such as intelligence, motivation, or memory ability) may distort the results. Random allocation helps
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