📚 Year 8 Edexcel Psychology: Core Knowledge Review | Year 8 Edexcel 心理学：核心知识点梳理
Welcome to your Year 8 Edexcel Psychology revision guide. This article covers the essential topics you need to understand for a solid foundation in psychology. From the definition of psychology to key theories of memory, social influence, and cognitive development, we will break down each concept clearly.
欢迎来到 Year 8 Edexcel 心理学复习指南。本文涵盖了建立心理学扎实基础所需的核心主题。从心理学的定义到记忆、社会影响和认知发展的关键理论，我们将清晰地分解每个概念。
1. What is Psychology? | 心理学是什么？
Psychology is the scientific study of mind and behaviour. It seeks to understand how we think, feel, and act both as individuals and in groups.
心理学是对心理和行为的科学研究。它试图理解我们作为个体和群体如何思考、感受和行动。
Psychologists use systematic methods to observe, describe, explain, and predict behaviour. This makes psychology a science, not just common sense.
心理学家使用系统的方法来观察、描述、解释和预测行为。这使得心理学成为一门科学，而不仅仅是常识。
The field of psychology covers many sub-disciplines, including cognitive psychology (mental processes), biological psychology (brain and nervous system), social psychology (interactions), and developmental psychology (changes across the lifespan).
心理学领域涵盖许多子学科，包括认知心理学（心理过程）、生物心理学（大脑和神经系统）、社会心理学（互动）和发展心理学（一生的变化）。
Understanding psychology can help us improve our learning, relationships, mental health, and decision-making in everyday life.
理解心理学可以帮助我们在日常生活中改善学习、人际关系、心理健康和决策。
2. Key Approaches in Psychology | 心理学的主要流派
There are several key approaches in psychology. The biological approach focuses on how our brain, genes, and hormones influence behaviour.
心理学有几个主要流派。生物学流派关注我们的大脑、基因和激素如何影响行为。
The cognitive approach studies mental processes like memory, perception, and problem-solving. It compares the mind to a computer, processing input and producing output.
认知流派研究记忆、感知和问题解决等心理过程。它将大脑比作计算机，处理输入并产生输出。
The behavioural approach argues that all behaviour is learned through interactions with the environment. It emphasises classical conditioning (learning by association) and operant conditioning (learning by consequences).
行为流派认为所有行为都是通过与环境互动习得的。它强调经典条件反射（通过联想学习）和操作性条件反射（通过后果学习）。
The social-cultural approach examines how social norms, culture, and group pressure shape our actions. It highlights that behaviour cannot be fully understood without considering the social context.
社会文化流派研究社会规范、文化和群体压力如何塑造我们的行为。它强调，如果不考虑社会背景，就无法充分理解行为。
The psychodynamic approach, founded by Sigmund Freud, emphasises the role of unconscious drives and early childhood experiences. Though less prominent today, it introduced the idea that not all mental processes are conscious.
由弗洛伊德创立的精神动力学流派强调无意识驱力和早期童年经历的作用。尽管如今不那么突出，但它引入了并非所有心理过程都是有意识的这一观念。
3. Research Methods | 研究方法
Experiments are controlled studies in which a researcher manipulates an independent variable to see its effect on a dependent variable, while keeping other factors constant. This allows us to infer cause and effect.
实验是受控研究，研究者操纵自变量来观察其对因变量的影响，同时保持其他因素不变。这使我们能够推断因果关系。
Observational studies involve watching and recording behaviour in natural or controlled settings without direct manipulation. They can be high in ecological validity but do not establish causation.
观察研究包括在自然或受控环境中观察和记录行为，不进行直接操纵。它们的生态效度可能很高，但不能确定因果关系。
Self-report methods such as questionnaires and interviews gather data directly from participants about their thoughts, feelings, and opinions. They are efficient but can be biased by social desirability effects.
问卷和访谈等自我报告方法直接从参与者那里收集关于其思想、感受和观点的数据。它们效率高，但可能受到社会期望效应的影响。
Case studies provide in-depth analysis of a single individual or small group. They offer rich, detailed insights but may not generalise to the wider population.
案例研究对单一个体或小群体进行深入分析。它们提供丰富、详细的见解，但可能无法推广到更广泛的人群。
Correlational research measures the relationship between two variables without manipulation. It can show how strongly variables are linked but cannot prove that one causes the other.
相关研究在不进行操纵的情况下测量两个变量之间的关系。它可以显示变量之间的联系有多强，但不能证明一个变量导致另一个变量。
4. The Multi-Store Model of Memory | 记忆的多存储模型
The multi-store model, proposed by Atkinson and Shiffrin (1968), describes memory as consisting of three separate stores: sensory memory, short-term memory (STM), and long-term memory (LTM).
阿特金森和希夫林（1968年）提出的多存储模型将记忆描述为由三个独立的存储系统组成：感觉记忆、短时记忆和长时记忆。
Sensory memory holds information from our senses for a very brief period (less than a second for visual information, a few seconds for auditory). If we pay attention to it, the information moves to STM.
感觉记忆在极短的时间内（视觉信息不到一秒，听觉信息几秒）保存来自感官的信息。如果我们注意到它，信息就会进入短时记忆。
Short-term memory has a limited capacity of about 7±2 items and a short duration of around 18-30 seconds without rehearsal. Information is mainly encoded acoustically.
短时记忆的容量有限，约为7±2个项目，在没有复述的情况下持续时间约为18-30秒。信息主要以听觉方式编码。
Maintenance rehearsal can keep information in STM, but for permanent storage it must be transferred to long-term memory. LTM has unlimited capacity and can last a lifetime, with information encoded mainly semantically.
保持性复述可以将信息留在短时记忆中，但要永久存储，则必须转入长时记忆。长时记忆容量无限，可以维持一生，信息主要以语义编码。
Evidence for the model comes from the serial position effect: when recalling a list, people remember words at the beginning (primacy effect, from LTM) and end (recency effect, from STM) better than those in the middle.
该模型的证据来自系列位置效应：在回忆一个列表时，人们对开头（首因效应，来自长时记忆）和结尾（近因效应，来自短时记忆）的单词回忆得比中间的更好。
5. Social Influence: Conformity and Obedience | 社会影响：从众与服从
Conformity is a type of social influence where an individual changes their behaviour or beliefs to fit in with a group. Asch’s (1951) line judgement study showed that people often conform even when the group is clearly wrong.
从众是一种社会影响类型，个体改变自己的行为或信念以融入群体。阿什（1951年）的线段判断研究表明，即使群体明显错误，人们也常常会从众。
Factors that increase conformity include group size (up to about 4-5 people), unanimity (there is less conformity if even one other person gives the correct answer), and task difficulty.
增加从众的因素包括群体规模（大约4-5人）、一致性（即使只有一个人给出正确答案，从众也会减少）以及任务难度。
Obedience involves following direct orders from an authority figure. Milgram’s (1963) electric shock experiment revealed that ordinary people may obey commands to harm others under pressure from authority.
服从涉及遵循权威人物的直接命令。米尔格拉姆（1963年）的电击实验表明，普通人在权威压力下可能会服从命令去伤害他人。
Obedience increases when the authority figure is legitimate, physically present, and when the victim is distant or depersonalised. Personal responsibility and seeing others disobey can reduce obedience.
当权威人物合法、在场，并且受害者遥远或人格模糊化时，服从会增加。个人责任感以及看到他人不服从会降低服从。
Minority influence is a form of social influence where a small group or individual can change the views of the majority by being consistent, committed, and flexible. This shows social influence is not just a one-way process.
少数人影响是社会影响的一种形式，一个小群体或个体通过保持一致性、坚定性和灵活性，能够改变多数人的观点。这表明社会影响并非单向过程。
6. Attachment Theory | 依恋理论
Attachment is a deep emotional bond between an infant and caregiver that develops over time. John Bowlby argued that this bond is crucial for survival and provides a secure base for exploration.
依恋是婴儿与照料者之间逐渐发展起来的深厚情感纽带。约翰·鲍尔比认为，这种纽带对生存至关重要，并为探索提供了一个安全基地。
Mary Ainsworth’s Strange Situation experiment identified three main attachment types: secure (infant explores freely, is distressed when separated, and easily comforted on reunion), insecure-avoidant (infant avoids contact), and insecure-resistant (infant is clingy and difficult to comfort).
玛丽·安斯沃思的陌生情境实验确定了三种主要的依恋类型：安全型（婴儿自由探索，分离时痛苦，重聚时容易安慰）、不安全-回避型（婴儿回避接触）和不安全-反抗型（婴儿粘人且难以安慰）。
Securely attached children tend to develop better social skills and emotional resilience later in life. Insecure attachment can be linked to relationship difficulties and anxiety.
安全型依恋的儿童在日后往往发展出更好的社交技能和情绪韧性。不安全依恋可能与关系困难和焦虑有关。
Cultural variations in attachment exist, but secure attachment is the most common pattern across cultures. Caregiver sensitivity is a key factor in shaping the type of attachment.
依恋存在文化差异，但安全型依恋在不同文化中都是最常见的模式。照料者的敏感性是形成依恋类型的关键因素。
7. Piaget’s Theory of Cognitive Development | 皮亚杰的认知发展理论
Jean Piaget proposed that children’s thinking develops through four distinct stages. The sensorimotor stage (0-2 years) involves learning through senses and movement, with the development of object permanence.
让·皮亚杰提出，儿童的思维发展经历四个不同的阶段。感知运动阶段（0-2岁）涉及通过感官和运动学习，并发展出客体
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