📚 Year 7 CAIE Psychology: Speech and Hearing Exam Preparation | CAIE 7年级心理学：口语与听力考试备考专项
Preparing for your Year 7 CAIE Psychology test on speech and hearing means understanding how your ears and brain work together to make sense of the sounds around you. This guide breaks down everything from the anatomy of the ear to how we produce and perceive speech, with plenty of exam-ready explanations.
准备CAIE 7年级心理学中关于口语与听力的考试，意味着要理解你的耳朵和大脑如何协同工作，以理解周围的声音。这本指南从耳朵的结构到我们如何产生和感知言语，逐一分解，并提供了大量考试适用的解释。
1. Introduction to Speech and Hearing in Psychology | 心理学中的口语与听力导论
Speech and hearing are central topics in introductory psychology because they involve both biological structures and cognitive processes. In your CAIE exam, you will need to explain how sound energy is converted into neural signals and how we turn thoughts into spoken words.
口语和听力是心理学入门课程的核心话题，因为它们既涉及生物结构，也涉及认知过程。在CAIE考试中，你需要解释声能是如何转换为神经信号的，以及我们如何将思想转化为口头语言。
This revision guide focuses on the key concepts tested at Year 7 level: the parts of the ear, the properties of sound, speech perception, language centres of the brain, and how we produce speech.
本复习指南聚焦于7年级考试的关键概念：耳朵的组成部分、声音的属性、言语知觉、大脑的语言中枢，以及我们如何发出语音。
2. How Sound Travels: The Basics of Hearing | 声音如何传播：听觉基础
Sound begins as a vibration that travels through a medium such as air. These vibrations create alternating areas of high and low pressure called compressions and rarefactions, which form sound waves.
声音最初是一种振动，通过空气等介质传播。这些振动产生交替的高压和低压区域，称为压缩和稀疏，从而形成声波。
When sound waves reach your ear, they are funnelled into the ear canal and cause the eardrum to vibrate. This is the first step in a remarkable chain that turns physical movement into electrical signals your brain can understand.
当声波到达你的耳朵时，它们被导入耳道，导致鼓膜振动。这是将物理运动转变为大脑能够理解的电信号这一非凡链条的第一步。
For your exam, remember that sound requires a medium to travel through – it cannot move through a vacuum. This is why astronauts in space cannot hear each other without radios.
考试时请记住，声音需要介质才能传播——它无法在真空中传播。这就是为什么太空中的宇航员如果不用无线电就无法听到彼此的声音。
3. The Human Ear: Outer, Middle and Inner Ear | 人耳：外耳、中耳和内耳
Your ear is divided into three main sections, each with a specific job in turning sound waves into meaning. The outer ear includes the pinna and the ear canal; the middle ear houses the eardrum and three tiny bones called ossicles; the inner ear contains the cochlea and the vestibular system.
你的耳朵分为三个主要部分，每一部分在将声波转化为意义的过程中都有特定的任务。外耳包括耳廓和耳道；中耳容纳着鼓膜和三块称为听小骨的细小骨头；内耳则包含耳蜗和前庭系统。
The three ossicles – the hammer (malleus), anvil (incus) and stirrup (stapes) – are the smallest bones in your body. They amplify vibrations from the eardrum and pass them to the oval window of the cochlea.
三块听小骨——锤骨、砧骨和镫骨——是你身体中最小的骨头。它们放大来自鼓膜的振动，并将其传递到耳蜗的卵圆窗。
Inside the fluid-filled cochlea are thousands of hair cells. When vibrations ripple through the fluid, these tiny hair cells bend, triggering electrical impulses that travel along the auditory nerve to the brain.
充满液体的耳蜗内有成千上万个毛细胞。当振动在液体中泛起涟漪时，这些微小的毛细胞弯曲，触发电脉冲，沿着听觉神经传至大脑。
4. From Sound Waves to Nerve Signals | 从声波到神经信号
The process of transforming sound energy into electrochemical signals is called transduction. In hearing, transduction takes place in the hair cells of the cochlea.
将声能转化为电化学信号的过程称为换能。在听觉中，换能发生在耳蜗的毛细胞内。
When hair cells bend, tiny ion channels open, allowing electrically charged particles to flow into the cell. This generates a receptor potential, and if the signal is strong enough, it triggers an action potential in the auditory nerve fibres.
当毛细胞弯曲时，微小的离子通道打开，允许带电粒子流入细胞。这会产生感受器电位，如果信号足够强，就会在听神经纤维中触发动作电位。
Your exam may ask you to sequence these steps: (1) sound waves enter the ear canal, (2) eardrum vibrates, (3) ossicles amplify vibrations, (4) cochlear fluid moves, (5) hair cells bend, (6) auditory nerve sends signals to the brain.
你的考试可能会让你排列以下步骤：(1) 声波进入耳道，(2) 鼓膜振动，(3) 听小骨放大振动，(4) 耳蜗液体运动，(5) 毛细胞弯曲，(6) 听神经向大脑发送信号。
5. Pitch, Loudness and Timbre | 音高、响度和音色
Three main psychological qualities describe our perception of sound: pitch, loudness and timbre. Each matches a particular physical property of sound waves.
三个主要的心理品质描述我们对声音的感知：音高、响度和音色。每一种都对应着声波的特定物理属性。
| Psychological Quality 心理品质 |
Physical Property 物理属性 |
Explanation 解释 |
|---|---|---|
| Pitch 音高 | Frequency (Hz) 频率（赫兹） | Higher frequency gives a higher pitch. 频率越高，音高越高。 |
| Loudness 响度 | Amplitude / Intensity (dB) 振幅/强度（分贝） | Larger amplitude is perceived as louder volume. 振幅越大，感受到的音量越响。 |
| Timbre 音色 | Waveform complexity 波形复杂度 | Allows us to tell a piano from a violin playing the same note. 让我们能区分演奏同一音符的钢琴和小提琴。 |
Knowing this table will help you in multiple-choice questions that ask ‘Which physical property determines how high or low a sound seems?’ The answer is frequency.
熟记这个表格能帮助你在选择题中回答“哪种物理属性决定了声音听起来的高低？”答案是频率。
6. Speech Perception: Recognising Sounds and Words | 言语知觉：识别声音和词语
Speech perception is how your brain interprets streams of sound as meaningful language. It is not a simple one-to-one mapping of sounds to letters because the same phoneme can sound different depending on surrounding sounds.
言语知觉是指你的大脑如何将一连串的声音解读为有意义的语言。这不是一个简单的声音与字母一一对应的过程，因为同一个音素在不同相邻声音的影响下听起来可能不同。
The phoneme is the smallest unit of sound that can change meaning. For example, swapping the /p/ in ‘pat’ for /b/ gives you ‘bat’, a completely different word. Your brain learns to recognise these phonemic boundaries early in life.
音素是能够改变意义的最小声音单位。例如，把’pat’中的/p/换成/b/就得到了一个完全不同的词’bat’。你的大脑在生命早期就学会了识别这些音素边界。
One famous effect is the McGurk effect, where what you see influences what you hear. When a video shows someone mouthing ‘ga’ but the audio plays ‘ba’, many people perceive a third sound ‘da’. This shows that speech perception is multimodal.
一个著名的效应是麦格克效应，即你看到的内容会影响你听到的内容。当视频中的人在做 ‘ga’ 的口型，而音频播放的是 ‘ba’ 时，许多人会感知到第三个音 ‘da’。这表明言语知觉是多模态的。
7. The Speech Chain: From Speaker to Listener | 言语链：从说话者到倾听者
The speech chain describes all the stages that must happen for one person to communicate a message to another via spoken language. It begins in the speaker’s brain and ends in the listener’s brain.
言语链描述了一个人通过口语向另一个人传递信息所必须经历的所有阶段。它始于说话者的大脑，结束于倾听者的大脑。
The chain includes: intention to communicate (cognitive level), language encoding (linguistic level), motor commands to speech muscles (physiological level), sound wave production (acoustic level), hearing and transduction (physiological level again), and decoding into meaning (linguistic and cognitive levels).
这个链条包括：交流意图（认知层面）、语言编码（语言学层面）、向言语肌肉发送运动指令（生理层面）、声波产生（声学层面）、听觉和换能（再次生理层面），以及解码为意义（语言学和认知层面）。
If any link in the speech chain breaks – due to hearing loss, a brain injury, or a problem with the vocal cords – communication becomes difficult. Your exam might ask you to explain why both speaker and listener are equally important in verbal communication.
如果言语链的任何一个环节断裂——由于听力丧失、脑损伤或声带问题——交流就会变得困难。你的考试可能会要求你解释为什么在口头交流中，说话者和倾听者同等重要。
8. Language Centres in the Brain | 大脑中的语言中枢
Two key areas in the left hemisphere of the brain are strongly linked to speech and language: Broca’s area and Wernicke’s area.
大脑左半球有两个关键区域与言语和语言密切相关：布洛卡区和韦尼克区。
| Brain Area 大脑区域 |
Location 位置 |
Main Function 主要功能 |
|---|---|---|
| Broca’s area 布洛卡区 | Frontal lobe 额叶 | Speech production, grammar, fluency. Damage causes non-fluent aphasia – the person knows what they want to say but cannot produce the words smoothly. 言语产生、语法、流畅性。损伤导致非流畅性失语——患者知道自己想说什么，但无法顺利说出词语。 |
| Wernicke’s area 韦尼克区 | Temporal lobe 颞叶 | Language comprehension. Damage causes fluent aphasia – speech sounds smooth but makes little sense, and understanding of spoken language is impaired. 语言理解。损伤导致流畅性失语——言语听起来流畅但毫无意义，口语理解受损。 |
In Year 7 Psychology, you are not expected to know all details of aphasia, but you should recognise that different parts of the brain handle different aspects of language. The connection between these two areas is provided by a bundle of nerve fibres called the arcuate fasciculus.
在7年级心理学中，你不需要了解失语症的所有细节，但你应该认识到大脑的不同部分处理语言的不同方面。这两个区域之间的联系由一束被称为弓状束的神经纤维提供。
9. How We Produce Speech Sounds | 我们如何发出语音
Producing speech involves a delicate coordination of respiration, phonation and articulation. Air from the lungs passes through the larynx, where the vocal folds vibrate to create sound (voicing). This sound is then shaped by the tongue, lips and jaw in the oral cavity.
发出语音需要呼吸、发声和构音的精妙协调。来自肺部的空气经过喉部，声带在其中振动以产生声音（浊音）。然后这个声音由口腔中的舌头、嘴唇和下颌进行塑形。
Vowels are produced with an open vocal tract, while consonants involve some form of constriction. For instance, a /t/ sound is made by briefly stopping airflow with the tongue against the roof of the mouth and then releasing it.
元音是在声道打开的情况下发出的，而辅音则涉及某种形式的收缩。例如，/t/ 音是通过用舌头抵住上颚短暂阻断气流，然后释放气流发出的。
Your exam may include a diagram of the vocal tract and ask you to label the larynx, pharynx, oral cavity and nasal cavity. Remember that the soft palate (velum) controls whether air goes through the nose, which is essential for nasal sounds like /m/.
你的考试可能包括一张声道的示意图，并要求你标记喉部、咽部、口腔和鼻腔。请记住，软腭（小舌）控制空气是否通过鼻子，这对于像 /m/ 这样的鼻音至关重要。
10. Key Terms and Definitions for Your Exam | 考试关键术语与定义
Make sure you can confidently define the following terms, as they frequently appear in CAIE Year 7 Psychology questions on speech and hearing.
请确保你能自信地定义以下术语，因为它们经常出现在CAIE 7年级心理学关于口语和听力的考题中。
- Frequency / 频率: The number of sound wave cycles per second, measured in hertz (Hz). Determines pitch.
- Amplitude / 振幅: The height of a sound wave, relating to the energy of the sound. Determines loudness.
- Cochlea / 耳蜗: A spiral-shaped, fluid-filled structure in the inner ear that contains hair cells for transduction.
- Auditory nerve / 听神经: The nerve that carries electrical signals from the cochlea to the brain.
- Phoneme / 音素: The smallest distinct unit of sound in a language that can distinguish one word from another.
- Transduction / 换能: The conversion of one form of energy into another, such as sound waves into neural impulses.
- Ossicles / 听小骨: The three tiny bones (hammer, anvil, stirrup) in the middle ear that amplify sound vibrations.
- Broca’s area / 布洛卡区: A region in the frontal lobe associated with speech production.
- Wernicke’s area / 韦尼克区: A region in the temporal lobe associated with understanding spoken language.
Create flashcards for these terms and practise explaining them out loud. This will strengthen both your spoken explanation skills and your written exam responses.
为这些术语制作抽认卡，并练习大声解释它们。这将同时增强你的口头解释能力和笔试作答能力。
11. Exam Tips: Answering Questions on Hearing and Speech | 考试技巧：解答听力与口语相关问题
When you open your exam paper, look for command words such as ‘describe’, ‘explain’, or ‘label’. A ‘describe’ question about the cochlea should focus on what it looks like and where it is, while an ‘explain’ question must say how it works.
当你打开试卷时，注意像“描述”、“解释”或“标注”这样的指令词。关于耳蜗的“描述”题应该集中于它的外形和位置，而“解释”题则必须说明它的工作原理。
Always link structure to function. For example, don’t just say ‘the stirrup pushes on the oval window’. Explain that ‘the stirrup pushes on the oval window to transmit amplified vibrations into the fluid of the cochlea, which is essential for bending the hair cells’.
始终将结构与功能联系起来。例如，不要只说“镫骨推动卵圆窗”。要解释“镫骨推动卵圆窗，将放大的振动传递到耳蜗的液体中，这对于弯曲毛细胞至关重要”。
If you are asked to label a diagram of the ear, practise spelling terms like ‘cochlea’, ‘eardrum’, ‘ossicles’ and ‘auditory nerve’ correctly – misspelt labels can lose marks. Use simple, clear vocabulary and avoid vague words such as ‘thing’ or ‘stuff’.
如果要求你为耳朵的结构图进行标注，要练习正确拼写诸如“cochlea”、“eardrum”、“ossicles”和“auditory nerve”这样的术语——拼写错误的标注会丢分。使用简单、清晰的词汇，避免使用“东西”或“玩意儿”这样模糊的词语。
Finally, manage your time. Spend no more than one minute per mark, and leave the last few minutes to check that you have written in full sentences and explained key processes step by step.
最后，管理好你的时间。每题每1分不超过1分钟，留出最后几分钟检查你是否用完整的句子书写，并逐步解释了关键过程。
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