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

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

Psychology is the scientific study of mind and behaviour. This article summarises the core knowledge points for Key Stage 3 (KS3) students following the Cambridge International (CIE) curriculum. Understanding these fundamentals will help you build a strong foundation for later studies.

心理学是研究心理和行为的科学。本文梳理了剑桥国际（CIE）课程中 KS3 心理学阶段的核心知识点，帮助你为后续学习打下扎实基础。

1. What is Psychology? | 什么是心理学？

Psychology is defined as the scientific study of human mind and behaviour. It aims to explain why we think, feel and act the way we do, using evidence gathered through systematic observation and experimentation rather than mere opinion or common sense.

心理学被定义为对人类心理和行为的科学研究。它旨在解释我们为何有特定的思考、感受和行为方式，并运用系统观察与实验收集的证据，而非仅靠主观意见或常识。

The word ‘psychology’ comes from the Greek words ‘psyche’ (mind/soul) and ‘logos’ (study). Modern psychology covers many areas, such as cognitive psychology (mental processes), social psychology (how we interact with others), developmental psychology (changes across the lifespan) and biological psychology (links between brain and behaviour).

“心理学”一词源于希腊语“psyche”（心灵/灵魂）和“logos”（研究）。现代心理学涵盖多个领域，如认知心理学（心理过程）、社会心理学（我们如何与他人互动）、发展心理学（毕生发展变化）和生物心理学（大脑与行为之间的联系）。

---

2. The Scientific Approach | 科学方法

Psychologists use the scientific method. This involves forming a hypothesis (a testable prediction), designing a study to test it, collecting data, analysing the results and drawing conclusions. This systematic process helps ensure that findings are objective, reliable and valid.

心理学家运用科学方法。这包括提出假设（一个可检验的预测）、设计研究进行检验、收集数据、分析结果并得出结论。这一系统过程有助于确保研究发现客观、可靠且有效。

Key variables in an experiment include the independent variable (IV), which the researcher manipulates, the dependent variable (DV), which is measured, and extraneous variables that need to be controlled so they do not affect the results. Researchers must also operationalise variables – that means defining them clearly so they can be measured.

实验中的关键变量包括自变量（IV，由研究者操纵）、因变量（DV，被测量）以及需加以控制的额外变量，以免干扰结果。研究者还必须对变量进行操作化定义，即明确界定变量以便测量。

---

3. Types of Research Methods | 研究方法的类型

Laboratory experiments take place in a highly controlled setting. The researcher manipulates the IV and measures the DV while controlling extraneous variables. They provide high internal validity but may lack ecological validity because the artificial environment differs from everyday life.

实验室实验在高度受控的环境中进行。研究者操纵自变量并测量因变量，同时控制额外变量。其内部效度高，但可能因人工环境与日常生活不同而缺乏生态效度。

Field experiments are conducted in a natural, real-world setting. The IV is still manipulated, but there is less control over extraneous variables. These experiments tend to have higher ecological validity, though it can be harder to establish cause-and-effect relationships with certainty.

现场实验在自然的真实环境中进行。自变量仍被操纵，但对额外变量的控制较少。这类实验往往具有更高的生态效度，但较难完全确立因果关系。

Observational studies involve watching and recording behaviour without manipulating variables. They can be participant (the researcher joins in) or non-participant, and overt (participants know they are being watched) or covert. Questionnaires and interviews allow researchers to gather self-report data on attitudes, beliefs and behaviours. Case studies provide in-depth information about a single individual or small group, offering rich detail but limited generalisability.

观察研究涉及在不对变量进行操纵的情况下观察和记录行为。可以是参与式（研究者加入其中）或非参与式，公开的（参与者知道被观察）或隐蔽的。问卷和访谈使研究者能收集关于态度、信念和行为的自我报告数据。个案研究对单一个体或小群体进行深入探究，提供丰富的细节，但推广性有限。

---

4. Memory: Encoding, Storage and Retrieval | 记忆：编码、存储和提取

Memory relies on three core processes: encoding (converting information into a form the brain can use), storage (maintaining the encoded information over time) and retrieval (accessing the stored information when it is needed). All three must work smoothly for us to remember effectively.

记忆依赖三个核心过程：编码（将信息转化为大脑可用的形式）、存储（长时间保持编码后的信息）和提取（在需要时获取存储的信息）。要有效记忆，这三个过程必须顺畅协作。

Encoding can take different forms. Visual encoding processes images and pictures, acoustic encoding processes sounds, and semantic encoding processes the meaning of information. Research by Baddeley showed that semantic encoding leads to the best long-term retention, while acoustic encoding is often used in short-term memory tasks.

编码可以采取不同形式。视觉编码处理图像和图片，听觉编码处理声音，语义编码处理信息的含义。巴德利的研究表明，语义编码带来最好的长时记忆保持，而听觉编码常被用于短时记忆任务。

---

5. Models of Memory | 记忆模型

The multi-store model of memory, proposed by Atkinson and Shiffrin, describes memory as consisting of three separate stores. Sensory memory has a very large capacity but holds information for only a fraction of a second. If we pay attention to it, information passes into short-term memory (STM).

阿特金森和希夫林提出的多存储记忆模型将记忆描述为由三个独立存储系统组成。感觉记忆容量非常大，但信息只能保持几分之一秒。如果我们注意这些信息，它们就会进入短时记忆（STM）。

STM has a limited capacity, famously described by Miller as 7 ± 2 items (or chunks), and a limited duration of about 18–30 seconds without rehearsal. Rehearsal helps transfer information from STM into long-term memory (LTM), which is believed to have a potentially unlimited capacity and can store information for a lifetime. Forgetting from STM often happens due to displacement, when new items push out older ones.

短时记忆容量有限，米勒著名地将其描述为 7±2 个组块，在没有复述的情况下持续时间约为 18 到 30 秒。复述有助于将信息从短时记忆转移到长时记忆（LTM），长时记忆被认为容量可以无限大，信息能储存终生。短时记忆的遗忘常常由于新信息挤掉旧信息而发生，即取代。

---

6. Forgetting and Memory Improvement | 遗忘与记忆改善

Forgetting can be explained by several theories. Decay theory suggests memory traces fade over time if they are not used. Interference theory argues that forgetting happens because other memories disrupt recall; proactive interference occurs when old learning disrupts new information, while retroactive interference happens when new learning disrupts old memories. Retrieval failure occurs when we cannot access information because we lack the right cues.

遗忘可以用几种理论解释。衰退说认为，如果不使用，记忆痕迹会随时间消退。干扰说认为遗忘是因其他记忆干扰了提取；前摄干扰是旧学习干扰了新信息，倒摄干扰则是新学习干扰了旧记忆。提取失败指我们因缺乏合适的线索而无法提取信息。

There are many evidence-based strategies to improve memory. These include regular rehearsal, chunking (grouping individual items into larger units), using mnemonic devices such as acronyms or the method of loci, and elaboration (linking new information to existing knowledge in a meaningful way).

有许多基于证据的策略可以改善记忆，包括定期复述、组块化（将单个项目组合成更大的单元）、使用记忆术，如首字母缩写词或位置记忆法，以及精细加工（以有意义的方式将新信息与已有知识相联系）。

---

7. Sensation and Perception | 感觉与知觉

Sensation refers to the process by which our sensory receptors detect physical stimuli from the environment, such as light waves or sound waves. Perception is the active process of selecting, organising and interpreting these sensations, giving them meaning and helping us understand what we see, hear and feel.

感觉指感觉器官探测环境中物理刺激（如光波或声波）的过程。知觉则是对这些感觉进行选择、组织和解释的主动过程，赋予其意义，并帮助我们理解所见、所闻与所感。

In vision, light enters the eye, is focused by the lens onto the retina, and is converted into neural signals that travel to the brain. Despite changes in distance, angle or lighting, we perceive objects as stable thanks to perceptual constancies, such as size constancy, shape constancy and colour constancy. Visual illusions, like the Müller-Lyer illusion, demonstrate that perception can sometimes be tricked by contextual cues.

在视觉中，光线进入眼睛，由晶状体聚焦到视网膜上，并转化为神经信号传递到大脑。尽管距离、角度或光线发生变化，我们仍能稳定地感知物体，这要归功于知觉恒常性，如大小恒常性、形状恒常性和颜色恒常性。缪勒-莱耶错觉等视错觉表明，知觉有时会被情境线索所欺骗。

---

8. Social Influence: Conformity and Obedience | 社会影响：从众与服从

Conformity is the tendency to change our behaviour or beliefs to match those of a group. This often happens because of normative social influence (wanting to fit in and be accepted) or informational social influence (believing the group knows better). Asch’s classic line-judgement study showed that many participants conformed to an obviously incorrect majority, demonstrating the power of group pressure.

从众是指改变自身行为或信念以与群体保持一致的倾向。这常常源于规范社会影响（希望融入并被接纳）或信息社会影响（认为群体知道得更多）。阿希经典的线条判断实验表明，许多参与者会随从一个明显错误的大多数，从而展示了群体压力的力量。

Obedience involves following direct orders from an authority figure. Milgram’s electric shock experiment revealed that ordinary people are capable of inflicting severe pain on another person simply because they were told to do so by an experimenter in a lab coat. Factors such as proximity of the authority figure and diffusion of responsibility can influence obedience levels.

服从涉及遵从权威人物发出的直接命令。米尔格拉姆电击实验揭示，普通人仅仅因为穿实验服的研究者指示，就能对他人施加严重痛苦。权威人物的亲近程度和责任分散等因素会影响服从水平。

---

9. Attachment in Development | 发展中的依恋

Attachment is a deep and enduring emotional bond that connects an infant to a primary caregiver. John Bowlby argued that attachment has an evolutionary basis – infants are born with an innate drive to seek closeness to a caregiver, which increases their chances of survival. He emphasised the importance of a sensitive period in early childhood for forming a healthy attachment.

依恋是连接婴儿与主要照料者之间深刻而持久的情感纽带。约翰·鲍尔比认为依恋有进化基础——婴儿天生具有寻求与照料者亲近的内驱力，这提高了他们的生存机会。他强调儿童早期存在一个形成健康依恋的敏感期。

Mary Ainsworth developed the ‘Strange Situation’ procedure to assess attachment quality. She identified three main attachment styles: secure attachment (child explores, is upset when caregiver leaves but happy on return), insecure-avoidant (child shows little distress on separation and avoids contact on reunion), and insecure-resistant (child is clingy and very distressed when left, yet resist comfort on return). Deprivation and disruption of attachment can have long-term effects on emotional and social development.

玛丽·安斯沃斯设计了“陌生情境”程序来评估依恋质量。她识别出三种主要的依恋类型：安全型（儿童积极探索，照料者离开时不安，回来时高兴）、不安全-回避型（儿童在分离时几乎不表现出痛苦，重聚时回避接触）和不安全-反抗型（儿童表现出黏人行为，离开时极度痛苦，返回时又抗拒安抚）。依恋的剥夺和中断可能对情绪和社会发展产生长远影响。

---

10. Ethics in Psychological Research | 心理学研究中的伦理

Ethical guidelines exist to protect the wellbeing, dignity and rights of research participants. Key principles include informed consent (participants should know what the study involves and agree to take part), the right to withdraw (participants can leave the study at any time without penalty), confidentiality (personal data must be kept private), protection from harm (participants should not experience physical or psychological distress greater than everyday life), and debriefing (explaining the true purpose of the study afterwards).

伦理准则的存在是为了保护研究参与者的福祉、尊严和权利。主要原则包括：知情同意（参与者应知晓研究内容并同意参与）、退出权（参与者可以随时退出研究且不受处罚）、保密（个人数据必须保密）、避免伤害（参与者不应承受超过日常生活的身心痛苦）以及事后解释（之后向参与者说明研究的真实目的）。

When deception is used – for instance, if participants are not told the full aim of a study to avoid demand characteristics – it must be carefully justified and followed by a thorough debriefing. An ethics committee usually reviews research proposals before the study begins to ensure these standards are met.

当使用欺骗时——例如，为避免需求特征而不告知参与者研究的全部目的——必须有充分理由，并在之后进行彻底的事后解释。伦理委员会通常会在研究开始前审查研究方案，以确保这些标准得到遵守。

---

Published by TutorHao | Psychology Revision Series | aleveler.com

更多咨询请联系16621398022（同微信）