📚 Year 12 WJEC Psychology: Core Knowledge Summary | WJEC 12年级心理学：核心知识点梳理
Year 12 WJEC Psychology provides a comprehensive introduction to the scientific study of mind and behaviour. The AS course is built around two units: 'Psychology: Past to Present' explores five key approaches, while 'Psychology: Investigating Behaviour' equips students with essential research methods and ethical principles. This article synthesises the core knowledge areas, highlighting the assumptions, classic studies, and evaluation points that every student must master.
WJEC 12年级心理学全面介绍了对思维与行为的科学研究。AS课程围绕两个单元展开：《心理学：从过去到现在》探讨五种核心流派，《心理学：探究行为》则培养学生掌握基本研究方法和伦理原则。本文梳理了核心知识领域，突出了每个学生必须掌握的假设、经典研究及评价要点。
1. Unit Structure and Assessment Overview | 课程结构与评估概述
The WJEC AS Psychology qualification comprises two externally assessed units. Unit 1 (Psychology: Past to Present) is a written exam lasting 1 hour 30 minutes, worth 50% of the AS. It covers the psychodynamic, behaviourist, cognitive, biological, and positive approaches. Unit 2 (Psychology: Investigating Behaviour) is a written exam of 1 hour 30 minutes, also worth 50%, focusing on research methods, ethical issues, and two classic studies (Milgram, 1963; Bandura et al., 1961). Students also conduct their own small-scale research.
WJEC AS心理学资格包括两个外部评估单元。第一单元（心理学：从过去到现在）为笔试，时长1小时30分钟，占总分50%，涵盖心理动力学、行为主义、认知、生物学和积极心理学五种流派。第二单元（心理学：探究行为）同为笔试，时长1小时30分钟，分值50%，重点考察研究方法、伦理问题以及两个经典研究（Milgram, 1963; Bandura et al., 1961）。学生还需独立完成一项小规模研究。
2. The Psychodynamic Approach | 心理动力学流派
The psychodynamic approach, pioneered by Sigmund Freud, assumes that unconscious processes, such as repressed memories and instinctual drives, shape behaviour. The tripartite model of personality – the id (pleasure principle), ego (reality principle), and superego (morality principle) – explains intrapsychic conflict. Defence mechanisms (e.g., repression, displacement) protect the ego from anxiety. Freud's psychosexual stages (oral, anal, phallic, latency, genital) propose that early childhood experiences are critical. Methodologically, this approach relies on case studies (e.g., Little Hans) and clinical interviews.
心理动力学流派由弗洛伊德创立，认为无意识过程（如被压抑的记忆和本能驱力）塑造行为。人格的三重模型——本我（快乐原则）、自我（现实原则）和超我（道德原则）——解释了内在心理冲突。防御机制（如压抑、移置）保护自我免受焦虑。弗洛伊德的心理性欲阶段（口欲期、肛欲期、性器期、潜伏期、生殖期）强调早期童年经历至关重要。在方法上，该流派依赖个案研究（如小汉斯）和临床访谈。
A strength is its recognition of the unconscious, which has led to therapeutic applications such as psychoanalysis. However, critics highlight the lack of falsifiability and the overemphasis on sexual drives. The approach is also considered deterministic and based on a small, unrepresentative sample.
该流派的一个优势在于承认无意识，由此催生了精神分析等治疗应用。但批评者指出其缺乏可证伪性且过度强调性驱力。该流派还被认为具有决定论倾向，且基于小规模、非代表性样本。
3. The Behaviourist Approach | 行为主义流派
Behaviourism argues that only observable behaviour should be studied scientifically. Key assumptions include: all behaviour is learned from the environment through classical conditioning (learning by association, as demonstrated by Pavlov's dogs) or operant conditioning (learning through reinforcement and punishment, as shown by Skinner's box). The mind is seen as a 'black box' that cannot be investigated objectively. Behaviourists advocate for laboratory experiments and strict operational definitions.
行为主义主张只应科学研究可观察的行为。其主要假设为：所有行为都通过经典条件作用（联想学习，如巴甫洛夫的狗）或操作性条件作用（通过强化和惩罚学习，如斯金纳箱）从环境中习得。心智被视为无法客观研究的“黑箱”。行为主义者推崇实验室实验和严格的操作性定义。
The approach has produced effective therapies like systematic desensitisation and token economies. It is highly scientific due to its controlled methodology and replicability. However, it neglects cognitive and emotional factors, reduces human behaviour to simple stimulus–response links, and raises ethical concerns regarding animal experiments.
该流派产生了系统脱敏法和代币经济等有效疗法。因其受控的方法和可重复性，它具有高度科学性。然而，它忽视了认知与情绪因素，将人类行为简化为简单的刺激–反应联结，并引发了动物实验的伦理问题。
4. The Cognitive Approach | 认知流派
The cognitive approach views the mind as an information processor, similar to a computer. It focuses on internal mental processes such as perception, memory, attention, and thinking. Key theoretical models include the multi-store model of memory (Atkinson & Shiffrin) and the working memory model (Baddeley & Hitch). Schemas – mental frameworks that organise and interpret information – are central to understanding cognitive biases and memory distortions. Cognitive neuroscience uses brain imaging to link mental processes to neural activity.
认知流派将心智视为信息加工器，类似于计算机。它关注知觉、记忆、注意和思维等内部心理过程。重要理论模型包括记忆的多重储存模型（Atkinson & Shiffrin）和工作记忆模型（Baddeley & Hitch）。图式——组织与解释信息的心理框架——是理解认知偏差和记忆扭曲的核心。认知神经科学利用脑成像技术将心理过程与神经活动联系起来。
The cognitive approach is highly scientific, employing rigorous experimental methods, and has practical applications in artificial intelligence and cognitive-behavioural therapy. However, the computer analogy may oversimplify human experience, and it often relies on inference rather than direct observation of mental processes. It also tends to ignore social and emotional influences.
认知流派高度科学，采用严格的实验方法，并在人工智能和认知行为疗法中有实际应用。但计算机类比可能过度简化人类体验，且常基于推断而非对心理过程的直接观察。它也倾向于忽视社会与情绪影响。
5. The Biological Approach | 生物学流派
The biological approach explains behaviour in terms of physiological processes, including genetics, brain structure/function, neurochemistry, and evolution. Key assumptions are that behaviour has a physical basis and can be inherited. Twin studies and adoption studies are used to estimate the heritability of traits such as intelligence or schizophrenia. The role of neurotransmitters (e.g., serotonin in mood, dopamine in reward) and brain localisation (e.g., Broca's area for speech production) are emphasised. Darwin's theory of evolution explains adaptive behaviours through natural selection.
生物学流派从生理过程解释行为，包括遗传、脑结构与功能、神经化学和进化。主要假设是行为具有物质基础且可遗传。双生子和领养研究用于估计智力或精神分裂症等特质的遗传力。强调神经递质的作用（如血清素影响情绪，多巴胺参与奖赏）和脑功能定位（如布罗卡氏区负责语言生成）。达尔文的进化论通过自然选择解释适应性行为。
This approach is grounded in objective, scientific techniques such as fMRI and EEG, providing strong internal validity. It has led to drug therapies for psychological disorders. Nevertheless, it can be overly reductionist, ignoring the complexity of social and cognitive influences. It also raises ethical implications of genetic screening and the determinism associated with 'hard-wired' behaviour.
该流派基于fMRI和EEG等客观科学技术，具有很强的内部效度。它为心理障碍带来了药物治疗。然而，它可能过于还原论，忽略了社会与认知影响的复杂性。它还引发了基因筛查的伦理问题和与“硬连线”行为相关的决定论。
6. The Positive Approach | 积极心理学流派
Positive psychology, championed by Seligman, shifts the focus from pathology to well-being and human flourishing. It assumes that psychology should study strengths and virtues, not just mental illness. Core concepts include the three pathways to happiness: the pleasant life (positive emotions), the engaged life (flow and involvement), and the meaningful life (using strengths for a higher purpose). Signature strengths (e.g., curiosity, kindness) are identified via inventories such as the VIA Classification. Mindfulness and gratitude interventions are practical applications.
积极心理学由塞利格曼倡导，将焦点从病理学转向幸福感与人类繁荣。它假定心理学应研究优势与美德，而不仅仅是心理疾病。核心概念包括通往幸福的三种途径：愉悦生活（积极情绪）、投入生活（心流与参与）和有意义的生活（将优势用于更高目的）。通过VIA性格优势分类等问卷识别标志性优势（如好奇心、仁慈）。正念与感恩干预是实际应用。
The positive approach has contributed to the development of positive therapy and enhanced well-being in educational and workplace settings. It is valued for its holistic, humanistic perspective. On the flip side, it can be accused of lacking scientific rigour, as concepts like happiness are subjective and culture-bound. It may also underestimate the impact of severe adversity or biological constraints on well-being.
积极心理学推动了积极心理治疗的发展，并在教育和职场中提升了幸福感。它因其整体性、人本主义视角而受到重视。另一方面，它可能被指责缺乏科学严谨性，因为幸福等概念主观且受文化限制。它还可能低估严重逆境或生物学限制对幸福感的影响。
7. Research Methods: Experimental Designs and Variables | 研究方法：实验设计与变量
In Unit 2, students learn how psychologists design investigations. The experimental method involves manipulating an independent variable (IV) to observe its effect on a dependent variable (DV), while controlling extraneous variables. Three common designs are: independent groups (different participants in each condition), repeated measures (same participants in all conditions), and matched pairs (participants matched on relevant traits and then split). Each design has strengths and weaknesses regarding participant variables and order effects.
在第二单元中，学生学习心理学家如何设计研究。实验法通过操纵自变量（IV）观察其对因变量（DV）的影响，同时控制无关变量。三种常见设计为：独立组设计（每种条件使用不同被试）、重复测量设计（相同被试参与所有条件）和配对组设计（被试按相关特质匹配后分配）。每种设计在参与者变量和顺序效应方面各有优缺点。
Hypotheses must be operationalised: directional (one-tailed) predicts a specific direction of outcome, while non-directional (two-tailed) simply predicts a difference or relationship. Null hypotheses state there is no effect. Counterbalancing and random allocation are techniques to minimise confounding variables.
假设必须操作化：方向性假设（单尾）预测结果的具体方向，而非方向性假设（双尾）仅预测差异或关系存在。零假设陈述没有效应。平衡法和随机分配是减少混淆变量的技术。
8. Non-Experimental Methods and Sampling | 非实验方法与抽样
Psychologists also use non-experimental methods such as observations (naturalistic, controlled, participant or non-participant), self-report techniques (questionnaires and interviews), and correlations. Correlational analysis measures the strength and direction of a relationship between two co-variables, expressed by a correlation coefficient (ranging from −1 to +1). Crucially, correlation does not imply causation. Sampling techniques include random, opportunity, stratified, systematic, and volunteer samples, each varying in representativeness and potential bias.
心理学家也使用非实验方法，如观察法（自然观察、控制观察、参与或非参与观察）、自我报告技术（问卷与访谈）和相关法。相关分析测量两个共变量之间关系的强度和方向，由相关系数表示（范围从−1到+1）。关键一点是相关不等于因果。抽样技术包括随机抽样、机会抽样、分层抽样、系统抽样和自愿抽样，每种在代表性和潜在偏差方面有所不同。
9. Ethical Guidelines and Issues | 伦理准则与问题
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