GCSE CCEA Psychology: Core Topics Summary | GCSE CCEA 心理学：核心知识点梳理

📚 GCSE CCEA Psychology: Core Topics Summary | GCSE CCEA 心理学：核心知识点梳理

This article provides a comprehensive summary of the core topics covered in the GCSE CCEA Psychology specification. Aimed at revision, it highlights key theories, research methods, and applications that students must know for the examination.

本文为 GCSE CCEA 心理学考试大纲的核心知识点进行系统梳理。文章涵盖研究方法、记忆、感知、发展、社会影响以及心理问题等关键主题，旨在帮助考生高效复习，掌握考试重点。

1. Research Methods: Experiments and Variables | 研究方法：实验与变量

Experiments are the primary research method in psychology, allowing researchers to establish cause-and-effect relationships. An experiment involves the manipulation of an independent variable (IV) to observe changes in a dependent variable (DV), while controlling extraneous variables.

实验是心理学的主要研究方法，可帮助研究者建立因果关系。实验通过操纵自变量 (IV) 来观察因变量 (DV) 的变化，同时控制额外变量。

The independent variable is the factor that is deliberately changed by the researcher. The dependent variable is what is measured. Operationalising variables means defining them clearly so they can be measured accurately, e.g., defining ‘memory’ as the number of words recalled from a list.

自变量是研究者有意改变的因素。因变量是被测量的因素。操作化定义变量意味着清晰定义变量以便准确测量，例如将“记忆”定义为从列表中回忆出的单词数量。

Mean = Σx ÷ N

Researchers often calculate the mean (average) score of the dependent variable to analyse data. (Σx = sum of scores, N = number of participants).

研究者通常计算因变量的平均值来分析数据。（Σx = 得分总和，N = 参与者数量）

2. Experimental Design and Controls | 实验设计与控制

Three main experimental designs are used: independent groups, repeated measures, and matched pairs. In independent groups, different participants are used in each condition. In repeated measures, the same participants take part in all conditions. Matched pairs design pairs participants on key characteristics and then allocates one from each pair to different conditions.

主要有三种实验设计：独立组设计、重复测量设计和配对组设计。独立组设计中，不同参与者在不同条件下测试。重复测量设计中，同一组参与者参与所有条件。配对组设计根据关键特征进行配对，然后分别分配到不同条件。

Each design has strengths and weaknesses. Independent groups avoid order effects but require more participants and may have participant variables. Repeated measures use fewer participants and control participant variables, but are prone to order effects (practice or fatigue). Counterbalancing is used to reduce order effects by changing the order of conditions for half the participants.

每种设计各有优缺点。独立组设计避免了顺序效应，但需要更多参与者，可能存在参与者变量。重复测量设计所需参与者较少，并控制了参与者变量，但容易受到顺序效应（练习效应或疲劳效应）的影响。平衡法通过让一半参与者改变条件顺序来减少顺序效应。

Control of extraneous variables is crucial. Standardised procedures, random allocation, and using a control group help ensure that the IV alone causes changes in the DV. Demand characteristics and investigator effects must also be minimised through single-blind or double-blind procedures.

对额外变量的控制至关重要。标准化程序、随机分配和使用对照组有助于确保只有自变量引起因变量的变化。需通过单盲或双盲程序尽量减少需求特征和研究者效应。

3. Ethical Considerations | 伦理考量

Research in psychology must follow ethical guidelines issued by bodies such as the British Psychological Society (BPS). Key principles include informed consent, protection from harm, privacy, confidentiality, and the right to withdraw. Deception should be avoided unless necessary and fully justified; then participants must be debriefed afterwards.

心理学研究必须遵循英国心理学会 (BPS) 等机构发布的伦理准则。核心原则包括知情同意、避免伤害、隐私、保密与退出权。应避免欺骗，除非必要并充分论证，事后必须进行解释说明。

Animal research also raises ethical issues, requiring careful consideration of the 3Rs: Replacement (using non-animal alternatives), Reduction (using fewer animals), and Refinement (minimising suffering). Studies such as Harlow’s monkey attachment experiments are discussed in terms of ethical cost versus benefit.

动物研究也引发伦理问题，需要慎重考量“3R原则”：替代（使用非动物替代方案）、减少（使用更少动物）和优化（减少痛苦）。像哈洛的猴子依恋实验等研究，需要在伦理代价与收益间进行讨论。

4. Memory: Multi-Store Model | 记忆：多存储模型

Atkinson and Shiffrin’s (1968) Multi-Store Model (MSM) describes memory as three separate stores: sensory register, short-term memory (STM), and long-term memory (LTM). Information flows sequentially. Sensory register holds information from the senses for a very brief duration (iconic memory for vision). If attention is paid, it transfers to STM.

Atkinson 和 Shiffrin (1968) 提出的多存储模型将记忆描述为三个分离的存储库：感觉登记、短期记忆 (STM) 和长期记忆 (LTM)。信息顺序流动。感觉登记保留来自感官的信息，持续时间极短（视觉的映像记忆）。如果被注意，信息会转入 STM。

STM has a limited capacity of approximately 7 ± 2 chunks of information (Miller, 1956). Its duration is about 18-30 seconds unless rehearsal occurs. Maintenance rehearsal keeps information in STM and can transfer it to LTM. LTM has potentially unlimited capacity and duration, storing information semantically.

STM 的容量有限，约为 7 ± 2 个组块（Miller, 1956）。在没有复述的情况下，持续时间约为 18-30 秒。维持性复述可将信息保持在 STM 中，并可能将其转入 LTM。LTM 的容量和持续时间几乎是无限的，以语义形式存储信息。

STM Capacity: 7 ± 2 chunks

Evidence from brain scans and case studies, such as HM, supports the distinction between STM and LTM. However, the model is oversimplified; research by Baddeley and Hitch proposed the Working Memory Model to explain STM as an active processor.

来自脑部扫描和案例研究（如 HM）的证据支持 STM 和 LTM 的区分。但该模型过于简单化；Baddeley 和 Hitch 的研究提出了工作记忆模型，将 STM 解释为主动的加工器。

5. Forgetting and Reconstructive Memory | 遗忘与重构记忆

Forgetting can be explained by decay (memory traces fade over time) and interference. Proactive interference occurs when old information disrupts recall of new information; retroactive interference is when new learning disrupts recall of old information. Context-dependent forgetting (lack of retrieval cues) also plays a role.

遗忘可由衰退

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