📚 Key Points for Experimental and Practical Assessments in Year 7 AQA Psychology | Year 7 AQA 心理学实验与实践考核要点
Welcome to the world of psychology experiments! This guide will help you understand the most important things you need to know for practical assessments in Year 7 AQA Psychology. You will learn how to plan, carry out, and write up a simple investigation, just like a real psychologist.
欢迎来到心理学实验的世界！这份指南将帮助你了解在 Year 7 AQA 心理学实践考核中需要掌握的最重要内容。你将学会像真正的心理学家一样，计划、实施并撰写一份简单的调查研究。
1. What is a Psychology Experiment? | 什么是心理学实验？
A psychology experiment is a carefully planned way of testing an idea about how people think, feel, or behave. Unlike just observing people, an experiment involves changing one thing on purpose and then measuring what happens. This lets us discover cause-and-effect relationships.
心理学实验是一种精心设计的方法，用来检验关于人们如何思考、感受或行为的想法。与单纯观察不同，实验需要刻意改变某一因素，然后测量接下来会发生什么。这让我们能够发现因果关系。
For example, you might wonder whether listening to music helps students concentrate better while doing homework. To test this, you could ask one group to do a puzzle while listening to music and another group to do the same puzzle in silence. Then you compare their scores. This is a simple experiment.
例如，你可能想知道听音乐是否有助于学生做作业时更好地集中注意力。为了检验这一点，你可以让一组人边听音乐边解谜，另一组在安静环境中解同样的谜题，然后比较两组的得分。这就是一个简单的实验。
2. Identifying Variables: IV and DV | 识别变量：自变量与因变量
In every experiment, there are two special types of variables. The independent variable (IV) is the thing you deliberately change or manipulate. The dependent variable (DV) is the thing you measure to see if it was affected by the IV.
在每一个实验中，都有两种特殊类型的变量。自变量 (IV) 是你刻意改变或操纵的因素，因变量 (DV) 是你为了观察是否受自变量影响而测量的因素。
A good way to remember this is: ‘I change the IV, and I measure the DV.’ In the music and concentration experiment, the IV is whether music is playing or not (silence vs. music). The DV is the score on the puzzle, showing how well they concentrated.
一个很好的记忆方法是：“我改变自变量 (IV)，我测量因变量 (DV)。” 在音乐与注意力实验中，自变量是是否播放音乐（安静 vs. 音乐），因变量是解谜得分，反映他们注意力集中程度。
3. Writing a Clear Hypothesis | 撰写清晰的假设
A hypothesis is a testable prediction about the relationship between the IV and DV. It should be specific and state exactly what you think will happen. Avoid vague statements like ‘music affects concentration’.
假设是一个关于自变量和因变量之间关系的可检验预测。它应当具体，并准确陈述你认为会发生什么。避免模糊的说法，例如“音乐影响注意力”。
Instead, write a clear directional hypothesis: ‘Students who listen to music while completing a puzzle will achieve a lower average score than students who complete the same puzzle in silence.’ This tells the reader exactly what you expect to find and how you will measure it.
相反，请撰写一个明确的定向假设：“在完成拼图时听音乐的学生，其平均得分会低于在安静环境中完成相同拼图的学生。” 这清晰告诉读者你预期发现什么，以及将如何测量。
4. Controlling Extraneous Variables | 控制额外变量
To make sure your experiment is fair, you must keep everything else the same for all participants. These are called control variables or extraneous variables. If you do not control them, they could influence the DV and ruin your results.
为确保实验公平，你必须让所有参与者在其他方面保持一致。这些称之为控制变量或额外变量。如果不加控制，它们可能影响因变量，从而破坏你的结果。
In the music puzzle experiment, control variables could include: the type of puzzle, the time allowed (e.g., exactly 5 minutes), the room temperature, the type of music, and the volume. If one group gets an easier puzzle, you won’t know if music really affected concentration.
在音乐拼图实验中，控制变量可以包括：拼图类型、规定时间（如恰好5分钟）、房间温度、音乐类型和音量。如果其中一组拿到了更简单的拼图，你就无法确定音乐是否真的影响了注意力。
5. Experimental Designs | 实验设计
When you set up an experiment in Year 7, you usually use one of two simple designs. The independent groups design uses different participants in each condition (e.g., one group does the test with music, a different group does it in silence).
在 Year 7 设计实验时，你通常会使用两种简单设计之一。独立组设计是在不同条件下使用不同的参与者（例如，一组在有音乐的条件下测试，另一组不同的参与者在安静环境中测试）。
The other option is a repeated measures design, where the same participants take part in both conditions. For instance, the same class does a puzzle with music on Monday, and a similar puzzle in silence on Tuesday. Each design has advantages and problems, but for Year 7 practicals, independent groups is often simpler to manage.
另一种选择是重复测量设计，即相同的参与者参加两种条件。例如，同一个班级周一在有音乐的环境中解谜，周二在安静环境解类似的谜题。每种设计各有优缺点，但对于 Year 7 实践来说，独立组设计往往更容易管理。
6. Sampling Techniques | 抽样方法
Sampling means choosing who will be in your experiment. Your participants are called a sample. In Year 7 practicals, you will often use an opportunity sample – this simply means asking people who are easily available, like your classmates or other students in your year group.
抽样是指选择谁将参与你的实验。你的参与者称为样本。在 Year 7 实践中，你通常会使用机会样本——这仅仅意味着询问容易接触到的人，比如你的同学或同年级的其他学生。
You should still aim for a variety of participants (boys and girls, different ages) if possible, to make your findings more generalisable. However, for a small classroom experiment, an opportunity sample is acceptable. Just remember to note this in your report.
如果可能，你仍应争取多样化的参与者（男生和女生、不同年龄），以便你的发现更具普遍性。然而，对于较小的课堂实验，机会样本是可以接受的。只需记住在报告中说明即可。
7. Ethical Guidelines | 伦理准则
All psychological research must follow ethical rules to protect participants. For Year 7 experiments, you must ensure that everyone gives their consent to take part and knows they can stop at any time without giving a reason. This is called informed consent and the right to withdraw.
所有心理学研究必须遵循伦理规则以保护参与者。对于 Year 7 实验，你必须确保每个人都同意参与，并且知道他们可以随时退出，无需给出理由。这被称为知情同意和退出权。
You also need to keep participants’ data confidential and not share their individual results with others. Do not cause any psychological harm, such as embarrassment or stress. After the experiment, you should explain what you were investigating – this is called a debrief.
你还需要对参与者的数据保密，不与他人分享其个人结果。不得造成任何心理伤害，例如尴尬或压力。实验结束后，你应当解释你在研究什么——这被称为事后说明。
8. Collecting and Recording Data | 收集与记录数据
Before you start, design a simple data table. This helps you record the DV for each participant clearly. For example, if you measure puzzle scores out of 20, your table might have columns for ‘Participant Number’, ‘Condition (Music or Silence)’, and ‘Puzzle Score’.
开始前，设计一个简单的数据表。这有助于你清楚地记录每个参与者的因变量。例如，如果你按20分制测量拼图得分，你的表格可能有这些列：“参与者编号”、“条件（音乐或安静）”和“拼图得分”。
Use a ruler and label everything neatly. In assessment, examiners look for accurate recording – no scribbling out of numbers without explanation. Keep the original data safe, as you will need it for analysis.
使用尺子并整齐标注所有内容。在考核中，考官看重准确记录——不得随意涂改数字而不加说明。妥善保管原始数据，因为你需要它进行分析。
9. Calculating the Mean | 计算平均值
The mean average is a very useful descriptive statistic for Year 7. To calculate the mean, add up all the scores in one condition and then divide the total by the number of participants. For example, if the silence group had scores 15, 17, 12, and 16, the mean is (15+17+12+16) ÷ 4 = 15.
平均值是 Year 7 中非常有用的描述统计量。计算平均值时，将某一条件下所有分数相加，然后将总和除以参与人数。例如，安静组的分数为15、17、12和16，则平均值为 (15+17+12+16) ÷ 4 = 15。
You should show your working clearly. A simple formula can be written as:
你应当清楚展示计算过程。简单公式可写为：
Mean = (Sum of all scores) ÷ (Number of scores)
平均值 = (所有分数之和) ÷ (分数的个数)
Comparing the means for the music condition and the silence condition helps you decide whether your hypothesis was supported.
比较音乐条件和安静条件的平均值，有助于你判断假设是否得到支持。
10. Writing a Simple Lab Report | 撰写简单的实验报告
After conducting your experiment, you need to write a brief report. A typical Year 7 psychology lab report should include the following sections: Title, Aim, Hypothesis, Method, Results, and Conclusion.
进行实验之后，你需要撰写一份简短报告。一份典型的 Year 7 心理学实验报告应包括以下部分：标题、目的、假设、方法、结果和结论。
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Aim: What were you trying to find out?
目的：你想探究什么？
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Hypothesis: Your clear prediction.
假设：你的明确预测。
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Method: Describe IV, DV, controls, design, participants, and exactly what you did.
方法：描述自变量、因变量、控制变量、设计、参与者以及你确切做了什么。
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Results: Present your data table and the mean scores. Do not discuss them yet.
结果：展示数据表和平均分数。先不要加以讨论。
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Conclusion: Say whether your hypothesis was supported and refer to your means as evidence. Also, suggest one improvement.
结论：说明你的假设是否得到支持，并以平均值作为证据。同时，提出一项改进建议。
Keep your sentences short and use the past tense because the experiment has already been done.
使用短句，并使用过去时态，因为实验已经完成。
11. Common Mistakes to Avoid | 要避免的常见错误
Mistake 1: Not identifying the IV and DV clearly before starting. Always write them down and check with your teacher. 错误 1：在开始前未能清楚识别自变量和因变量。一定要把它们写下来并与老师核对。
Mistake 2: Leading participants with your instructions. For example, saying ‘I think music will make you worse, so try your best to concentrate’ can bias the results. Use a standard script. 错误 2：用指导语引导参与者。例如说“我认为音乐会让你们表现更差，所以尽力集中注意力吧”会扭曲结果。使用标准说明文本。
Mistake 3: Forgetting to control something obvious. If you do the silence condition in a library and the music condition in a noisy corridor, the place itself is an extraneous variable. 错误 3：忘记控制某个明显因素。如果你在图书馆进行安静条件实验，却在嘈杂的走廊进行音乐条件实验，地点本身就成为了额外变量。
Mistake 4: Mixing up the mean and the mode. The mean uses all the numbers; the mode is simply the most frequent score. Use the mean unless asked otherwise. 错误 4：混淆平均值和众数。平均值使用所有数值；众数仅仅是最常出现的分数。除非另有要求，否则使用平均值。
12. Top Tips for Practical Assessments | 实践考核高分技巧
Read the question carefully. If you are given a scenario, underline the IV and DV before you start writing. Use the word ‘because’ to justify your choices: ‘The DV is the number of words correctly recalled because this measures memory performance.’
仔细审题。如果题目给出了一个情境，在开始写作前先勾画出自变量和因变量。使用“因为”一词来论证你的选择：“因变量是正确回忆的单词数量，因为这可以衡量记忆表现。”
When designing an experiment on paper, include a realistic control: ‘All participants will be given the same list of 20 words, presented in the same font size for exactly 1 minute.’ This shows the examiner you are thinking like a scientist.
在进行纸上实验设计时，应包含实际可行的控制变量：“所有参与者将拿到同样一份包含20个单词的列表，以相同的字体大小呈现，并恰好展示1分钟。”这向考官展示了你像科学家一样思考。
Finally, practice writing short conclusions using data: ‘The mean score for the quiet group was 15, while the mean for the music group was 11. This supports my hypothesis that music reduces concentration during puzzles.’ This simple format works every time.
最后，练习使用数据撰写简短结论：“安静组的平均得分为15，而音乐组的平均得分为11。这支持了我的假设，即音乐在进行拼图时会削弱注意力。”这种简单的格式每次都很有效。
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