Core Knowledge for KS3 Edexcel Psychology | KS3 Edexcel 心理学：核心知识点梳理

📚 Core Knowledge for KS3 Edexcel Psychology | KS3 Edexcel 心理学：核心知识点梳理

Psychology is the scientific study of mind and behaviour. At KS3, you begin to explore key topics that help explain why people think, feel and act the way they do. This article summarises the core knowledge you need for the Edexcel Psychology course, covering memory, development, social influence, mental health and biological psychology. Each section introduces essential concepts and research that will form the foundation for further study at GCSE.

心理学是对心理和行为的科学研究。在KS3阶段，你将开始探索能够解释人们为何这样思考、感受和行动的关键主题。本文梳理了Edexcel心理学课程的核心知识，涵盖记忆、发展、社会影响、心理健康和生物心理学等领域。每一节都会介绍基本概念和重要研究，为GCSE的进一步学习打下基础。

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1. Understanding Psychology | 理解心理学

Psychology is often defined as the science of behaviour and mental processes. Unlike common-sense beliefs, psychological knowledge is based on systematic observation, measurement and experimentation. It aims to describe, explain, predict and sometimes change behaviour.

心理学通常被定义为研究行为和心理过程的科学。与常识信念不同，心理学知识建立在系统的观察、测量和实验基础之上。它的目标是描述、解释、预测并在某些情况下改变行为。

Psychological approaches include biological, cognitive, social and developmental perspectives. Each perspective offers a unique lens for understanding human experience. For example, the biological approach looks at brain structures and neurotransmitters, while the cognitive approach focuses on memory, thinking and decision-making.

心理学方法包括生物、认知、社会和发展等视角。每种视角都为理解人类经验提供了独特的透镜。例如，生物心理学关注大脑结构和神经递质，而认知心理学则侧重于记忆、思维和决策过程。

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2. Research Methods | 研究方法

An experiment involves manipulating an independent variable (IV) to see its effect on a dependent variable (DV), while controlling other variables. This allows researchers to establish cause-and-effect relationships. Extraneous variables must be controlled to avoid confounding results.

实验涉及操纵自变量(IV)以观察其对因变量(DV)的影响，同时控制其他变量。这使研究者能够建立因果关系。必须控制额外变量，以免混淆结果。

Other methods include observations, questionnaires and case studies. Observations can be naturalistic or controlled, and self-report methods such as questionnaires gather large amounts of data quickly. However, each method has strengths and limitations in terms of reliability, validity and ethics.

其他方法包括观察法、问卷调查和案例研究。观察法可分为自然观察和控制观察，而像问卷这样的自我报告法则能快速收集大量数据。然而，每种方法在信度、效度和伦理方面都有其优势与局限。

Ethical issues are central to psychological research. Key principles include informed consent, protection from harm, right to withdraw, confidentiality and debriefing. Researchers must always balance the pursuit of knowledge with the welfare of participants.

伦理问题是心理学研究的核心。主要原则包括知情同意、免受伤害、退出权利、保密以及事后解释。研究者必须始终在追求知识与保障参与者福祉之间取得平衡。

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3. Memory: The Multi-Store Model | 记忆：多储存模型

The multi-store model (MSM) proposed by Atkinson and Shiffrin (1968) suggests that memory consists of three separate stores: the sensory register, short-term memory (STM) and long-term memory (LTM). Each store differs in capacity, duration and coding.

阿特金森和谢夫林(1968)提出的多储存模型认为，记忆由三个独立的储存器组成：感觉登记、短时记忆(STM)和长时记忆(LTM)。每个储存器在容量、持续时间和编码方式上各不相同。

The sensory register holds information from the senses for a very brief time (about half a second for visual information). If attention is paid to this information, it is transferred to STM. Otherwise, it decays rapidly.

感觉登记在极短的时间内（视觉信息约半秒）保存来自感官的信息。若对这些信息加以注意，便转入短时记忆；否则信息会迅速消退。

STM has a limited capacity of about 7 (plus or minus 2) items and lasts around 18 seconds unless rehearsed. Information is mainly coded acoustically. Maintenance rehearsal can keep information in STM and help transfer it to LTM.

短时记忆的容量有限，约为7±2个组块，如果不进行复述，持续时间大约18秒。信息主要以声音编码。维持性复述可将信息保持在短时记忆中，并有助于将其转入长时记忆。

LTM has potentially unlimited capacity and a very long duration, coding information semantically (by meaning). Evidence for the separate stores comes from the serial position effect: when recalling a list of words, people remember the first few (primacy effect, linked to LTM) and the last few (recency effect, linked to STM) best.

长时记忆的容量几乎是无限的，持续时间非常长，并以语义（意义）编码。多储存模型的证据来自系列位置效应：在回忆单词列表时，人们记得最牢的是开头几个（首因效应，与长时记忆相关）和最后几个（近因效应，与短时记忆相关）。

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4. Explanations of Forgetting | 遗忘的解释

Forgetting can occur when memories interfere with each other. Proactive interference happens when old learning disrupts new learning, while retroactive interference is when new learning disrupts the recall of old information. For example, learning a new phone number may make it harder to remember an old one (retroactive interference).

遗忘可能由记忆相互干扰导致。前摄干扰是指旧的学习干扰新学习，而倒摄干扰是指新学习干扰对旧信息的回忆。例如，学习新电话号码可能让你更难记起旧号码（倒摄干扰）。

Another explanation is retrieval failure, where information is available in LTM but cannot be accessed because of a lack of appropriate cues. Context-dependent forgetting occurs when the environment at recall differs from the environment at learning (e.g. revising in a quiet room but being tested in a noisy hall).

另一种解释是提取失败，即信息存在于长时记忆中，但由于缺乏适当的线索而无法提取。情景依赖遗忘发生在回忆时的环境与学习时的环境不同的时候（例如，在安静的房间复习却在嘈杂的礼堂考试）。

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5. Attachment in Childhood | 童年依恋

Attachment is a deep emotional bond between an infant and a primary caregiver, usually the mother. John Bowlby argued that attachment has an evolutionary basis and is crucial for survival, as it keeps the infant close to the caregiver for protection and care.

依恋是婴儿与主要照顾者（通常为母亲）之间深厚的情感纽带。约翰·鲍尔比认为，依恋具有进化基础，对生存至关重要，因为它使婴儿接近照顾者以获取保护和照料。

Mary Ainsworth’s Strange Situation is a controlled observation designed to assess the quality of attachment in infants aged 12-18 months. It involves a series of separations and reunions with the caregiver and a stranger. Ainsworth identified three main attachment types: secure (type B), insecure-avoidant (type A) and insecure-resistant (type C).

玛丽·安斯沃思的陌生情境是一种控制观察，旨在评估12-18个月婴儿的依恋质量。该程序包含一系列与照顾者和陌生人分离与重聚的情节。安斯沃思识别出三种主要的依恋类型：安全型（B型）、不安全-回避型（A型）和不安全-反抗型（C型）。

Secure infants show distress when the caregiver leaves, but happily greet them upon return and are quickly soothed. Insecure-avoidant infants appear indifferent to the caregiver’s departure and avoid contact upon reunion. Insecure-resistant infants are very distressed by separation, yet resist comfort when reunited.

安全型婴儿在照顾者离开时会显得不安，但照顾者返回时愉快地迎接并很快得到安抚。不安全-回避型婴儿对照顾者的离开显得漠不关心，重聚时回避接触。不安全-反抗型婴儿在分离时极为痛苦，然而重聚时却抗拒安慰。

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6. Piaget’s Theory of Cognitive Development | 皮亚杰的认知发展理论

Jean Piaget proposed that children actively construct their understanding of the world through schemas, and that cognitive development proceeds through four distinct stages. Key processes include assimilation (fitting new information into existing schemas) and accommodation (changing schemas to fit new information).

让·皮亚杰提出，儿童通过图式主动建构对世界的理解，认知发展分四个不同的阶段进行。关键过程包括同化（将新信息纳入现有图式）和顺应（改变图式以适应新信息）。

The sensorimotor stage (0-2 years) is when infants learn through senses and actions, and develop object permanence – the understanding that objects continue to exist even when out of sight. The preoperational stage (2-7 years) sees the use of symbols and language, but thinking is egocentric and children struggle with conservation tasks.

感知运动阶段（0-2岁）是婴儿通过感官和动作学习的时期，并发展出客体永久性——理解物体即使看不见也依然存在。前运算阶段（2-7岁）出现符号和语言的使用，但思维以自我为中心，儿童难以完成守恒任务。

In the concrete operational stage (7-11 years), logical reasoning about concrete events develops, and children can perform conservation tasks and classify objects. Finally, in the formal operational stage (11+ years), abstract and hypothetical thinking emerges, allowing systematic problem solving and scientific reasoning.

在具体运算阶段（7-11岁），具体事件的逻辑推理发展起来，儿童能够完成守恒任务并对物体进行分类。最后，在形式运算阶段（11岁以上），抽象和假设性思维出现，使人能够进行系统的问题解决和科学推理。

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7. Social Influence: Conformity | 社会影响：从众

Conformity is a change in behaviour or belief to fit in with a group. Solomon Asch (1951) conducted a classic study where participants were asked to judge the lengths of lines in the presence of confederates who gave obviously wrong answers. Asch found that about 75% of participants conformed at least once, and the overall conformity rate was around 37%.

从众是为了与群体保持一致而改变行为或信念。所罗门·阿希(1951)进行了一项经典研究，要求参与者在明知错误答案的合谋者面前判断线段长度。阿希发现，约75%的参与者至少从众一次，总体从众率约为37%。

Two main explanations are normative social influence (conforming to gain approval or avoid rejection) and informational social influence (conforming because others are believed to have more accurate knowledge). Factors affecting conformity include group size, unanimity and task difficulty.

两种主要解释是规范性社会影响（为获得认可或避免拒绝而从众）和信息性社会影响（因相信他人更正确而从众）。影响从众的因素包括群体规模、一致性和任务难度。

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8. Social Influence: Obedience | 社会影响：服从

Obedience involves following the orders of an authority figure. Stanley Milgram (1963) investigated obedience in a controversial experiment where participants (‘teachers’) were instructed to give electric shocks to a ‘learner’ (a confederate) for incorrect answers. Shocks ranged from 15 to 450 volts. The learner screamed and protested but the experimenter urged the teacher to continue.

服从涉及遵循权威人物的命令。斯坦利·米尔格拉姆(1963)在一项有争议的实验中研究了服从。实验中，参与者（“教师”）被指示在“学习者”（同谋）答错时施加电击，电击范围从15伏到450伏。学习者尖叫抗议，但主试仍催促教师继续。

Milgram found that 65% of participants continued to the maximum 450-volt shock, despite the apparent distress. This showed that ordinary people can commit harmful acts when ordered by a legitimate authority. Proximity of the victim, presence of disobedient peers and location of the authority significantly influenced obedience levels.

米尔格拉姆发现，65%的参与者持续到最高450伏电击，尽管学习者表现出明显的痛苦。这表明普通人在合法权威命令下可能做出伤害行为。受害者的邻近性、不服从同伴的存在以及权威所在地点显著影响了服从水平。

The study raised serious ethical issues, including deception and psychological harm, but it highlighted the power of the situation in shaping behaviour. It remains one of the most famous demonstrations of the danger of blind obedience.

该研究引发了严重的伦理问题，包括欺骗和心理伤害，但它突显了情境在塑造行为中的强大作用。它至今仍是有关盲目服从危险性的最著名演示之一。

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9. Mental Health: Unipolar Depression | 心理健康：单相抑郁

Unipolar depression is a mood disorder characterised by persistent low mood, loss of

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