📚 Core Concepts in Psychology: A KS3 Cambridge Revision Guide | 剑桥KS3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 how people think, feel, and act, using simple experiments and observations. This guide covers key topics that build a strong foundation for further study, including research methods, biological influences, learning, memory, social behaviour, and mental health.
心理学是关于心智与行为的科学研究。在 KS3 阶段，你会开始通过简单的实验和观察来探索人们的思维、情感和行为方式。本指南涵盖为进一步学习打下坚实基础的核心主题，包括研究方法、生物影响、学习、记忆、社会行为以及心理健康。
1. What is Psychology? | 什么是心理学？
Psychology is the scientific study of the mind and behaviour. It aims to describe, explain, predict, and sometimes change how individuals think, feel, and act. Unlike everyday common sense, psychologists use systematic methods to gather evidence and test theories.
心理学是对心智与行为的科学研究。它旨在描述、解释、预测，有时改变个体的思维、情感和行为方式。与日常常识不同，心理学家使用系统化的方法来收集证据并检验理论。
Key areas of psychology include cognitive, biological, developmental, social, and clinical psychology. Each area focuses on different aspects of human experience, from brain processes to group dynamics.
心理学的主要领域包括认知心理学、生物心理学、发展心理学、社会心理学和临床心理学。每个领域关注人类经验的不同方面，从大脑过程到群体互动。
2. Research Methods and Ethics | 研究方法与伦理
Psychologists use various research methods such as experiments, observations, surveys, and case studies. An experiment usually involves an independent variable (IV) that the researcher changes and a dependent variable (DV) that is measured. It is important to control extraneous variables so that cause-and-effect conclusions can be made.
心理学家使用多种研究方法，如实验、观察、问卷调查和个案研究。实验通常包含研究者操纵的自变量 (IV) 和测量得到的因变量 (DV)。控制额外变量很重要，这样才能得出因果结论。
Ethical guidelines ensure that participants are protected. These include obtaining informed consent, avoiding deception unless necessary, allowing withdrawal, maintaining confidentiality, and debriefing after the study. At KS3, you will learn to design simple studies that respect these principles.
伦理准则确保参与者受到保护。这些准则包括获得知情同意、避免除非必要的不欺骗、允许退出、保持保密性以及研究后进行解说。在 KS3 阶段，你将学习设计尊重这些原则的简单研究。
3. Biological Psychology: The Brain and Behaviour | 生物心理学：大脑与行为
Biological psychology examines how the brain, nervous system, and hormones influence behaviour. The brain is divided into areas with different functions: the frontal lobe is involved in decision-making and personality, the temporal lobe in hearing and memory, the occipital lobe in vision, and the parietal lobe in sensory information processing. The cerebellum coordinates balance and movement.
生物心理学研究大脑、神经系统和激素如何影响行为。大脑划分为具有不同功能的区域：额叶参与决策和人格，颞叶参与听觉和记忆，枕叶参与视觉，顶叶参与感觉信息处理。小脑协调平衡和动作。
Neurons are specialised cells that transmit electrical signals. Communication between neurons occurs at synapses using chemical messengers called neurotransmitters. For example, serotonin affects mood, and dopamine is linked to reward and movement.
神经元是传递电信号的特化细胞。神经元之间的交流发生在突触处，使用称为神经递质的化学信使。例如，血清素影响情绪，多巴胺与奖励和运动相关。
4. Sensation and Perception | 感觉与知觉
Sensation is the process of receiving information from the environment through our senses, such as light waves hitting the retina. Perception is the interpretation of that sensory information, creating meaningful experiences. Perception can be influenced by expectations, past experiences, and context, which may lead to visual illusions.
感觉是通过我们的感官接收环境中信息的过程，例如光波照射到视网膜。知觉是对这些感觉信息进行解释，从而产生有意义的体验。知觉会受到期望、过往经验和情境的影响，这可能导致视错觉。
A well-known illusion is the Müller-Lyer illusion, where two lines of equal length appear different because of arrow-like figures. The Ponzo illusion involves size constancy. Studying illusions helps psychologists understand how the brain constructs reality.
著名的错觉之一是缪勒-莱耶错觉，其中两条等长的线由于箭头状的图形看起来长度不同。庞佐错觉涉及大小恒常性。研究错觉有助于心理学家理解大脑如何构建现实。
5. Learning: Classical and Operant Conditioning | 学习：经典条件反射与操作条件反射
Learning is a relatively permanent change in behaviour due to experience. Classical conditioning was studied by Ivan Pavlov. In his experiment, dogs learned to salivate to a bell after the bell was repeatedly paired with food. The unconditioned stimulus (food) triggers an unconditioned response (salivation). The neutral stimulus (bell) becomes a conditioned stimulus that elicits a conditioned response (salivation).
学习是由于经验而导致的行为相对持久的变化。经典条件反射由伊万·巴甫洛夫进行研究。在他的实验中，狗在铃声多次与食物配对后学会了听到铃声就分泌唾液。无条件刺激（食物）引发无条件反应（分泌唾液）。中性刺激（铃声）变成了条件刺激，引起条件反应（分泌唾液）。
Operant conditioning, studied by B.F. Skinner, involves learning through consequences. Reinforcement increases the likelihood of a behaviour, while punishment decreases it. Positive reinforcement adds a pleasant stimulus (e.g., giving a reward), and negative reinforcement removes an unpleasant one (e.g., stopping a loud noise).
操作条件反射由 B.F. 斯金纳研究，涉及通过后果来进行学习。强化增加行为发生的可能性，而惩罚减少它。正强化添加一个愉快的刺激（例如给予奖励），负强化移除一个不愉快的刺激（例如停止大声噪音）。
6. Memory | 记忆
Memory involves encoding, storage, and retrieval of information. The multi-store model by Atkinson and Shiffrin describes three stores: sensory memory (very brief), short-term memory (STM) with limited capacity and duration, and long-term memory (LTM) with potentially unlimited capacity and duration. Rehearsal helps move information from STM to LTM.
记忆涉及信息的编码、存储和提取。阿特金森和希夫林的多重存储模型描述了三种存储：感觉记忆（非常短暂）、短时记忆（容量和持续时间有限）和长时记忆（容量和持续时间几乎无限）。复述有助于将信息从短时记忆转移到长时记忆。
The capacity of STM is often said to be 7 ± 2 items, as found by Miller. However, chunking can increase effective capacity. Forgetting can occur due to decay, interference, or retrieval failure.
短时记忆的容量通常被认为是 7 ± 2 个项目，由米勒发现。然而，组块化可以增加有效容量。遗忘可能由于衰退、干扰或提取失败而发生。
STM Capacity ≈ 7 ± 2 chunks
7. Developmental Psychology | 发展心理学
Developmental psychology studies how people grow and change from infancy to old age. Jean Piaget proposed stages of cognitive development. At KS3, you focus on the sensorimotor stage (birth to 2 years) where infants learn through senses and motor actions, and the preoperational stage (2-7 years) where children begin to use language and symbols but struggle with conservation and egocentrism.
发展心理学研究人们从婴儿期到老年期的成长与变化。让·皮亚杰提出了认知发展阶段。在 KS3 阶段，你重点学习感知运动阶段（出生至 2 岁），婴儿通过感觉和动作学习；以及前运算阶段（2-7 岁），儿童开始使用语言和符号，但在守恒和自我中心方面存在困难。
Conservation is the understanding that quantity remains the same despite changes in shape. Preoperational children often say a tall narrow glass has more liquid than a short wide one, even if amounts are equal.
守恒是指理解尽管形状改变但数量保持不变。前运算阶段的儿童经常会说高细杯子里的液体比矮粗杯子的多，即使数量相同。
8. Social Influence: Conformity and Obedience | 社会影响：从众与服从
Social influence examines how our behaviour is affected by others. Conformity is a change in behaviour or belief to fit in with a group. Asch’s line study showed that many participants conformed to an obviously wrong group judgment about line lengths at least once. Normative social influence (wanting to be liked) and informational social influence (wanting to be right) explain conformity.
社会影响研究我们的行为如何受他人影响。从众是为了与群体保持一致而改变行为或信念。阿希线段实验表明，许多参与者至少一次在对线段长度的明显错误群体判断上从众。规范性社会影响（想要被喜欢）和信息性社会影响（想要正确）解释从众。
Obedience involves following orders from an authority figure. Milgram’s famous study on obedience, though ethically controversial, demonstrated that ordinary people might follow instructions to deliver what they believed were painful electric shocks to another person. Situational factors, such as the presence of an authority figure in a lab coat, heavily influenced obedience.
服从涉及遵循权威人物的命令。米尔格拉姆著名的服从研究虽然在伦理上有争议，但表明普通人在接到指令时可能会听从，对他人施加他们认为痛苦的电话。情境因素，如穿着实验室外套的权威人物的在场，对服从有很大影响。
9. Emotion and Motivation | 情绪与动机
Emotions are complex psychological states involving subjective feelings, physiological arousal, and expressive behaviour. The James-Lange theory suggests we feel emotion because of physiological changes (e.g., we feel sad because we cry). The Cannon-Bard theory argues emotion and arousal occur simultaneously. Basic emotions include happiness, sadness, fear, anger, surprise, and disgust.
情绪是涉及主观感受、生理唤醒和表达性行为的复杂心理状态。詹姆斯-兰格理论认为我们感受到情绪是因为生理变化（例如，我们因为哭泣而感到悲伤）。坎农-巴德理论认为情绪和唤醒同时发生。基本情绪包括快乐、悲伤、恐惧、愤怒、惊讶和厌恶。
Motivation drives us to take action. Maslow’s hierarchy of needs describes motivation from basic physiological needs (food, water) up to safety, belonging, esteem, and self-actualisation. Intrinsic motivation comes from within (enjoyment), while extrinsic motivation comes from external rewards (prizes).
动机驱使我们采取行动。马斯洛的需求层次描述了从基本的生理需求（食物、水）到安全、归属、尊重和自我实现的动机。内在动机来自内部（享受），而外在动机来自外部奖励（奖品）。
10. Mental Health and Wellbeing | 心理健康与福祉
Mental health is about our emotional, psychological, and social well-being. It affects how we think, feel, and act. Good mental health is not just the absence of mental illness; it involves coping with stress, building relationships, and making healthy choices. Common mental health challenges during adolescence include anxiety and depression.
心理健康关乎我们的情绪、心理和社会福祉。它影响我们的思维、感受和行为方式。良好的心理健康不仅仅是没有心理疾病；它还包括应对压力、建立关系和做出健康选择。青春期常见的心理健康挑战包括焦虑和抑郁。
Ways to promote wellbeing include regular physical activity, sufficient sleep, mindfulness, strong social connections, and seeking help when needed. Reducing stigma around mental health allows people to talk openly and get support.
促进福祉的方法包括定期锻炼、充足睡眠、正念、牢固的社会联系以及在需要时寻求帮助。减少对心理健康问题的污名化让人们能够公开交谈并获得支持。
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