📚 IGCSE CCEA Psychology: Core Concepts Summary | IGCSE CCEA 心理学：核心知识点梳理
This article provides a comprehensive summary of the core concepts you need to master for the IGCSE CCEA Psychology specification. We will explore research methods, cognitive processes, developmental stages, social influence, biopsychology and individual differences, with each section pairing English explanations and Chinese translations to support bilingual revision.
本文全面梳理了 IGCSE CCEA 心理学考试必须掌握的核心知识点。我们将深入探讨研究方法、认知过程、发展阶段、社会影响、生物心理学以及个体差异，每个部分均采用英文阐释与中文翻译配对的形式，助你高效进行双语复习。
1. Research Methods and Ethics | 研究方法与伦理
The experimental method involves manipulating an independent variable (IV) to observe its effect on a dependent variable (DV), while all other variables are controlled to establish cause and effect. A hypothesis must be operationalised, meaning variables are clearly defined in measurable terms.
实验法通过操纵自变量（IV）来观察其对因变量（DV）的影响，同时控制所有其他变量以确立因果关系。研究假设必须被操作化，即用可测量的术语明确定义各个变量。
Researchers can use independent groups, repeated measures or matched pairs designs. Each has its own strengths and limitations: independent groups avoid order effects but may be affected by participant variables, while repeated measures require fewer participants but risk fatigue or practice effects.
研究者可以采用独立组设计、重复测量设计或配对组设计。每种设计各有优缺点：独立组设计避免顺序效应但可能受参与者变量影响，重复测量设计所需被试较少却存在疲劳或练习效应的风险。
Ethical guidelines protect participants from harm, ensure informed consent, maintain confidentiality and allow withdrawal at any time. The British Psychological Society (BPS) code of conduct is central to planning any psychological investigation.
伦理准则保护参与者免受伤害，确保知情同意，维护保密性并允许随时退出。英国心理学会（BPS）的行为准则对任何心理学研究的规划都至关重要。
Non‑experimental methods include observations, questionnaires, interviews and case studies. Correlational research measures the strength and direction of a relationship between two co‑variables, but cannot prove causation.
非实验法包括观察法、问卷法、访谈法和个案研究。相关研究测量两个协变量之间关系的强度和方向，但不能证明因果关系。
2. Memory: Multistore Model and Forgetting | 记忆：多储存模型与遗忘
Atkinson and Shiffrin's multistore model describes memory in three stores: sensory register, short‑term memory (STM) and long‑term memory (LTM). Information flows between stores through attention and rehearsal, but the model is often criticised for being too linear and passive.
阿特金森和希夫林的多储存模型将记忆描述为三个储存库：感觉登记、短时记忆（STM）和长时记忆（LTM）。信息通过注意和复述在储存库之间流动，但该模型常被批评过于线性化和被动。
STM capacity is limited to about 7±2 chunks, and its duration is around 18– rehearsal. Encoding is primarily acoustic, as shown by the phonological similarity effect.
短时记忆的容量有限，约为 7±2 个组块，不进行复述时持续时间约为 18–30 秒。编码以听觉为主，语音相似效应即证明了这一点。
LTM is believed to have unlimited capacity and duration, with semantic encoding playing a major role. Episodic, semantic and procedural are three commonly distinguished types of long‑term memory.
长时记忆被认为拥有无限的容量和持续时间，语义编码起主要作用。情景记忆、语义记忆和程序性记忆是三种常被区分的长期记忆类型。
Explanations of forgetting include decay, displacement and interference. Proactive interference occurs when old material disrupts recall of new information, while retroactive interference works in the opposite direction. Context‑dependent forgetting suggests that recall improves when the retrieval environment matches the learning environment.
遗忘的解释包括痕迹消退、替代和干扰。前摄干扰指旧材料干扰新信息的回忆，倒摄干扰则方向相反。情境依赖遗忘理论认为，当提取环境与学习环境相匹配时，回忆效果更好。
3. Perception: Constructivist and Gibsonian Views | 知觉：建构论与吉布森理论
The constructivist theory, associated with Gregory, argues that perception is an active process where the brain builds a hypothesis about the world using past experience, expectations and context. Visual illusions provide strong evidence that we 'see' more than what is in the stimulus.
与格里高利相关的建构论认为，知觉是一个主动过程，大脑利用过往经验、预期和情境构建关于世界的假设。视错觉有力证明了我们“看见”的比刺激本身多。
Gibson's direct theory proposes that all information needed for perception is available in the optic array; no top‑down processing is required. Affordances and optic flow are key concepts that explain how we interact directly with the environment.
吉布森的直觉理论提出，知觉所需的所有信息都存在于光阵之中，不需要自上而下的加工。功能可示性和光流是解释我们如何与环境直接互动的关键概念。
Factors affecting perception include culture, emotion and motivation. For instance, Hudson's pictorial depth perception study demonstrated that cultural background influences susceptibility to certain illusions, challenging the idea of universal perceptual rules.
影响知觉的因素包括文化、情绪和动机。例如，哈德森的图画深度知觉研究表明，文化背景影响人们对特定错觉的敏感性，挑战了知觉规则普遍适用的观点。
4. Development: Piaget's Theory and Vygotsky | 发展：皮亚杰理论与维果茨基
Piaget's stage theory describes cognitive development in four stages: sensorimotor (0-2 years), pre‑operational (2-7 years), concrete operational (7-11 years) and formal operational (11+ years). The achievement of object permanence and conservation marks key transitions.
皮亚杰的阶段理论将认知发展分为四个阶段：感知运动阶段（0-2岁）、前运算阶段（2-7岁）、具体运算阶段（7-11岁）和形式运算阶段（11岁以上）。客体永久性和守恒概念的获得标志着关键的过渡。
Piaget's concepts of assimilation, accommodation and equilibration explain how schemas adapt. His clinical interviews and conservation tasks remain influential, though critics argue that he underestimated young children's abilities and overlooked social factors.
皮亚杰的同化、顺应和平衡概念解释了图式如何适应。他的临床访谈和守恒任务至今影响深远，但批评者认为他低估了幼儿的能力并忽视了社会因素的影响。
Vygotsky emphasised the role of social interaction and cultural tools in learning. The zone of proximal development (ZPD) represents what a child can achieve with guidance, and scaffolding describes how a more knowledgeable other provides temporary support.
维果茨基强调社会互动和文化工具在学习中的作用。最近发展区（ZPD）代表儿童在指导下能够达到的水平，而支架式教学描述了更有知识的人如何提供临时支持。
5. Social Influence: Conformity and Obedience | 社会影响：从众与服从
Asch's line study demonstrated that even in an unambiguous situation, people will conform to a majority group giving an obviously wrong answer approximately 37% of the time. Normative social influence (desire to fit in) and informational social influence (desire to be right) explain conformity.
阿希的线段实验表明，即使在毫不模糊的情境中，人们也有约37%的可能服从给出明显错误答案的多数群体。规范社会影响（渴望融入）和信息社会影响（渴望正确）解释了从众行为。
Milgram's obedience experiments revealed that 65% of participants were willing to administer apparently lethal electric shocks when instructed by an authority figure. Proximity, uniform and location were key situational factors affecting obedience levels.
米尔格拉姆的服从实验揭示，65% 的参与者愿意听从权威人物的指令实施看似致命的电击。距离、制服和地点是影响服从水平的关键情境因素。
Explanations of obedience include the agentic state theory, which argues that individuals shift responsibility to the authority, and legitimate authority, where people accept the right of certain figures to give orders. Authoritarian personality can also account for individual differences in obedience.
对服从的解释包括代理人状态理论，认为个体将责任转移给权威者，以及合法权威，即人们接受某些人物有权发号施令。权威主义人格也可以解释服从中的个体差异。
6. Brain and Neuropsychology | 大脑与神经心理学
The central nervous system consists of the brain and spinal cord. The brain's four main lobes are frontal (thought, planning), parietal (sensory integration), occipital (vision) and temporal (auditory processing, memory). Damage to specific areas produces predictable deficits, such as Broca's aphasia impairing speech production.
中枢神经系统由脑和脊髓组成。大脑的四个主要脑叶为额叶（思维、计划）、顶叶（感觉整合）、枕叶（视觉）和颞叶（听觉加工、记忆）。特定区域的损伤会产生可预测的功能缺陷，如布罗卡失语症损害言语产出。
Neurons transmit information electrically and chemically. The action potential travels along the axon, and neurotransmitters such as serotonin, dopamine and acetylcholine cross the synapse to relay signals. An imbalance in these chemicals has been linked to depression and schizophrenia.
神经元通过电信号和化学信号传递信息。动作电位沿着轴突传播，而血清素、多巴胺和乙酰胆碱等神经递质穿过突触传递信号。这些化学物质失衡已与抑郁症和精神分裂症联系起来。
Scanning techniques like MRI and fMRI allow researchers to observe brain structure and activity non‑invasively. CT and PET scans are also used, each with advantages and limitations regarding spatial resolution and functional detail.
MRI 和 fMRI 等扫描技术使研究者能够非侵入式地观察大脑结构和活动。CT 和 PET 扫描同样被使用，每种技术在空间分辨率和功能细节方面各有优势和局限。
7. Psychological Problems: Depression and Addiction | 心理问题：抑郁症与成瘾
Depression is characterised by persistent low mood, loss of interest (anhedonia), changes in appetite and sleep, and negative self‑thoughts. The cognitive explanation (Beck's negative triad) suggests that automatic negative thoughts about self, world and future maintain the disorder.
抑郁症的特征是持续情绪低落、兴趣丧失（快感缺乏）、食欲与睡眠改变以及消极的自我思想。认知解释（贝克的负性认知三联征）认为，关于自我、世界和未来的自动负性想法维持着这一障碍。
Biological explanations of depression include the role of low serotonin levels and genetic vulnerability. The diathesis‑stress model proposes that a genetic predisposition is triggered by environmental stressors, offering a holistic account.
抑郁症的生物学解释包括血清素水平低和遗传易感性。素质-应激模型提出，遗传倾向由环境压力源激活，提供了一种整体的解释。
Addiction is defined by compulsion, tolerance, withdrawal and neglect of other activities. Biological theories highlight dopamine's role in reward pathways, while learning theories emphasise operant conditioning (positive reinforcement) and classical conditioning (cues associated with substance effects).
成瘾的定义为强迫性行为、耐受性、戒断反应和忽视其他活动。生物学理论强调多巴胺在奖赏通路中的作用，而学习理论则强调操作性条件作用（正强化）和经典条件作用（与物质效果相关联的线索）。
Treatments for depression include cognitive behavioural therapy (CBT), which challenges irrational thoughts, and antidepressant medication such as SSRIs. Addiction treatments involve CBT, medication like methadone, and social support programmes.
抑郁症的治疗包括认知行为疗法（CBT），挑战非理性思维，以及服用 SSRIs 类抗抑郁药物。成瘾治疗包括 CBT、美沙酮等药物和社会支持项目。
8. Socialisation and Culture | 社会化与文化
Socialisation is the process by which individuals learn the norms, values and roles of their society. Primary socialisation occurs within the family, while secondary socialisation happens through peer groups, education and media. Gender roles are acquired through modelling and reinforcement.
社会化是个体学习其社会规范、价值观和角色的过程。初级社会化发生在家庭内部，次级社会化则通过同辈群体、教育和媒介发生。性别角色通过模仿和强化习得。
Culture shapes behaviour and cognition. Individualist cultures prioritise personal independence, whereas collectivist cultures emphasise group harmony. Berry's acculturation strategies—integration, assimilation, separation and marginalisation—describe how migrants adapt to a new culture.
文化塑造行为与认知。个人主义文化看重个人独立，而集体主义文化强调群体和谐。贝里的文化适应策略——整合、同化、分离和边缘化——描述了移民如何适应新文化。
9. Key Studies and Application | 关键研究与应用
You should be able to describe, evaluate and apply classic studies. For memory, Peterson and Peterson (1959) demonstrated STM duration using trigrams. For social influence, Sherif's autokinetic effect showed informational conformity, and Haney, Banks & Zimbardo's Stanford Prison experiment illustrated deindividuation and social roles.
你应能够描述、评价并应用经典研究。在记忆领域，彼得森夫妇（1959）用三字母组证明了短时记忆的持续时间。在社会影响领域，谢里夫似动效应证明了信息性从众，而哈尼、班克斯和津巴多的斯坦福监狱实验展示了去个体化和社会角色。
Ethical considerations often limit replication, so you need to weigh validity against harm. Modern research uses less deceptive methods, yet classic studies remain foundational for understanding conformity, obedience and developmental stages.
伦理考量往往限制研究复制，因此你需要权衡效度与伤害。当代研究采用较少欺骗的方法，但经典研究仍然是理解从众、服从和发展阶段的基础。
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