Course outline
Module 1
Module 1: Topic 1
Topic 1
Knowledge check
Q1. What is synaesthesia?
- A. A condition in which a person experiences a sensation in one sense when another sense is stimulated ✓
- B. A condition in which a person has an unusually strong memory for sounds
- C. A disorder that causes complete loss of one sense from birth
- D. A learned skill in which people train their brains to focus on multiple stimuli at once
Why: Synaesthesia is a neurological condition in which stimulation of one sensory or cognitive pathway leads to automatic experiences in a second, unstimulated pathway, such as seeing colours when hearing music.
Q2. Which of the following is a common example of synaesthesia?
- A. Feeling pain when touching a hot object
- B. Tasting words or associating letters with specific colours ✓
- C. Recognising a friend's face in a crowd
- D. Feeling tired after a long period of concentration
Why: Grapheme-colour synaesthesia, where letters or numbers are consistently perceived as having particular colours, is one of the most commonly reported forms of synaesthesia.
Q3. What is the term for synaesthesia in which a person sees colours when hearing sounds or music?
- A. Chromesthesia ✓
- B. Ideasthesia
- C. Lexical-gustatory synaesthesia
- D. Mirror-touch synaesthesia
Why: Chromesthesia, also called sound-to-colour synaesthesia, is the form in which auditory stimuli such as music, voices or noises trigger visual colour experiences.
Q4. Which statement best describes how synaesthetic experiences are typically experienced by those who have them?
- A. They are consciously chosen and can be switched on or off at will
- B. They are involuntary, consistent over time, and often feel as real as ordinary perceptions ✓
- C. They only occur while under the influence of drugs or during periods of stress
- D. They are random and differ each time the same stimulus is presented
Why: Synaesthetic associations are automatic and involuntary, and they tend to be highly consistent across a person's lifetime, which is one of the defining features used by researchers to identify the condition.
Q5. Roughly what proportion of the population is estimated to have some form of synaesthesia?
- A. Around 0.1 per cent
- B. Around 5 per cent ✓
- C. Around 25 per cent
- D. Around 50 per cent
Why: Estimates vary by study, but many researchers suggest that roughly 4 to 5 per cent of people have some form of synaesthesia, making it more common than was once believed.
Module 2
Module 2: Topic 2
Topic 2
Knowledge check
Q1. What is synaesthesia?
- A. A condition in which a person sees or hears things that are not present
- B. A neurological condition in which stimulation of one sense automatically triggers an experience in another sense ✓
- C. A disorder that affects only the sense of smell
- D. A memory disorder that causes confusion between past and present events
Why: Synaesthesia is a neurological condition in which stimulating one sensory or cognitive pathway leads to automatic, involuntary experiences in a second pathway. For example, a person may see colours when hearing music or perceive taste when reading words.
Q2. Which of the following is the most common form of synaesthesia?
- A. Chromesthesia, where sounds trigger colour experiences
- B. Grapheme-colour synaesthesia, where letters or numbers are consistently associated with particular colours ✓
- C. Tactile-smell synaesthesia, where touch triggers smell
- D. Auditory-taste synaesthesia, where sounds trigger tastes
Why: Grapheme-colour synaesthesia is the most widely studied and commonly reported form. In this type, individuals consistently perceive specific letters or digits as having particular colours, and these associations typically remain stable over a person's lifetime.
Q3. What does it mean that synaesthetic experiences are described as 'involuntary'?
- A. The person can choose to switch the experience on or off at will
- B. The experience happens automatically whenever the trigger stimulus is present, without conscious effort ✓
- C. The person can only experience synaesthesia while under the influence of drugs
- D. The experience only occurs when the person is asleep
Why: Involuntary means the synaesthetic experience occurs automatically when the trigger is encountered, rather than being deliberately imagined or controlled. A person with grapheme-colour synaesthesia cannot simply decide not to see colour when reading a letter.
Q4. Which statement about the consistency of synaesthetic associations is accurate?
- A. Associations change randomly from day to day
- B. Associations are usually consistent over time for a given individual ✓
- C. Associations are identical across all synaesthetes
- D. Associations can only be recalled through hypnosis
Why: For most synaesthetes, the pairings between triggers and experiences (such as a specific letter always appearing as a particular colour) remain stable across the lifespan. However, the specific pairings differ from person to person, so there is no single universal set of associations.
Q5. Approximately what proportion of the population is estimated to have some form of synaesthesia?
- A. Around 50 percent
- B. Around 10 percent ✓
- C. Around 0.1 percent
- D. Around 25 percent
Why: Estimates vary across studies and definitions, but a commonly cited figure is that roughly 4 to 10 percent of people have some form of synaesthesia. It is more common than once thought, though it remains a minority experience.
Module 3
Module 3: Topic 3
Topic 3
Knowledge check
Q1. What is synaesthesia most accurately described as?
- A. A disorder that causes hallucinations in people with schizophrenia
- B. A condition in which stimulation of one sensory or cognitive pathway leads to automatic experiences in a second pathway ✓
- C. A learned skill that allows people to remember colours by associating them with words
- D. A form of color blindness that prevents people from distinguishing certain hues
Why: Synaesthesia is a neurological condition in which stimulating one sense or cognitive pathway triggers involuntary experiences in another, such as seeing colours when hearing sounds.
Q2. Which of the following is the most common form of synaesthesia reported in research?
- A. Tasting words
- B. Feeling touch on the skin when seeing movement
- C. Grapheme-colour synaesthesia, where letters or numbers are perceived as coloured ✓
- D. Smelling music
Why: Grapheme-colour synaesthesia, in which letters and numbers consistently evoke specific colours, is among the most frequently studied and reported forms.
Q3. What characteristic distinguishes synaesthetic associations from ordinary mental associations?
- A. They are always visual and never auditory
- B. They are involuntary, consistent over time, and perceived as real ✓
- C. They can be easily changed by the person at will
- D. They only occur during periods of intoxication
Why: Synaesthetic experiences are automatic and involuntary, tend to be stable across a person's life, and are experienced as genuinely perceived rather than imagined.
Q4. Approximately what proportion of the population is estimated to have some form of synaesthesia?
- A. Around 0.1 percent
- B. Around 4 to 5 percent ✓
- C. Around 25 percent
- D. Around 50 percent
Why: Estimates commonly place the prevalence of synaesthesia at roughly 4 to 5 percent of the population, though figures vary depending on the type and how it is measured.
Q5. Which term describes a synaesthete who perceives colours when experiencing particular sounds, words, or music?
- A. Chromesthesia ✓
- B. Hyperacusis
- C. Phonophobia
- D. Aphasia
Why: Chromesthesia, sometimes called sound-to-colour synaesthesia, is the form in which sounds, music, or speech evoke colour experiences.
Module 4
Module 4: Topic 4
Topic 4
Knowledge check
Q1. What is synaesthesia?
- A. A condition in which a person experiences blurred or double vision
- B. A neurological condition in which stimulation of one sensory or cognitive pathway leads to automatic experiences in a second pathway ✓
- C. A type of memory disorder that affects the recall of sensory experiences
- D. A learned skill in which people train themselves to associate colours with sounds
Why: Synaesthesia is a neurological phenomenon in which stimulating one sense or cognitive pathway automatically triggers an experience in another, such as hearing sounds evoking colours.
Q2. Which of the following is the most common form of synaesthesia?
- A. Grapheme-colour synaesthesia, where letters or numbers are perceived as coloured ✓
- B. Taste-touch synaesthesia, where tastes produce tactile sensations
- C. Olfactory-visual synaesthesia, where smells produce images
- D. Thermal-auditory synaesthesia, where temperatures produce sounds
Why: Grapheme-colour synaesthesia, in which letters or numbers consistently evoke particular colours, is among the most commonly studied and reported forms.
Q3. What characterises the experiences of people with synaesthesia?
- A. The associations are random and change from day to day
- B. The associations are consistent over time and involuntary ✓
- C. The associations occur only when the person is under the influence of drugs
- D. The associations can be turned on and off at will
Why: A key feature of synaesthesia is that the cross-sensory associations are consistent across time and automatic, rather than voluntary or random.
Q4. Which term describes a synaesthete who experiences sound as colour?
- A. Chromesthete ✓
- B. Phonophobe
- C. Audiogenic
- D. Tonal reader
Why: A chromesthete experiences colours triggered by sounds, which is one of the more widely recognised forms of synaesthesia.
Q5. Approximately what proportion of the population is estimated to have some form of synaesthesia?
- A. Around 0.1 percent
- B. Around 4 percent ✓
- C. Around 25 percent
- D. Around 50 percent
Why: Research estimates suggest roughly 4 percent of people have some form of synaesthesia, though estimates vary depending on the definition and testing methods used.
Module 5
Module 5: Topic 5
Topic 5
Knowledge check
Q1. What is synaesthesia?
- A. A condition in which a person experiences one sense through another, such as seeing colours when hearing sounds ✓
- B. A disorder that causes complete loss of hearing
- C. A memory disorder that prevents the formation of new long-term memories
- D. A type of language impairment that affects reading comprehension
Why: Synaesthesia is a neurological condition in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second pathway, such as seeing colours when hearing music or tasting shapes.
Q2. Which of the following is the most commonly reported form of synaesthesia?
- A. Grapheme-colour synaesthesia, where letters or numbers are perceived as having specific colours ✓
- B. Taste-touch synaesthesia, where touching objects produces flavours
- C. Olfactory-auditory synaesthesia, where smells produce sounds
- D. Thermal-visual synaesthesia, where temperature changes produce shapes
Why: Grapheme-colour synaesthesia is among the most frequently studied and commonly reported forms, in which letters, numbers, or words consistently evoke particular colours for the person experiencing it.
Q3. Synaesthetic experiences are typically described by those who have them as being:
- A. Consciously invented and changeable at will
- B. Automatic, involuntary, and consistent over time ✓
- C. Only experienced during dreams or sleep
- D. Triggered only by drugs or alcohol
Why: A defining feature of synaesthesia is that the associations are involuntary and tend to remain consistent across a person's life, which is one way researchers distinguish genuine synaesthesia from imaginative metaphor.
Q4. Which term describes the everyday figurative language that people use, such as describing a sound as 'bright' or a colour as 'warm'?
- A. Cross-modal metaphor, which is not the same as synaesthesia ✓
- B. Hyperosmia, an increased sensitivity to smells
- C. Aphantasia, an inability to form mental images
- D. Prosopagnosia, difficulty recognising faces
Why: Cross-modal metaphors are common linguistic expressions that link senses, but they are conscious and learned. Synaesthesia differs because its cross-sensory experiences are automatic and perceptual rather than merely figurative.
Q5. Synaesthesia is estimated to affect approximately what proportion of the population?
- A. About 4 percent, or roughly 1 in 25 people, though estimates vary across studies ✓
- B. About 0.01 percent of people
- C. About 50 percent of people
- D. Nearly everyone, though most never notice it
Why: Estimates vary depending on methodology, but many studies suggest that around 4 percent of people experience some form of synaesthesia, making it more common than was once assumed.
Module 6
Module 6: Topic 6
Topic 6
Knowledge check
Q1. What is synaesthesia?
- A. A condition in which a person experiences a sensation in one sense when another sense is stimulated ✓
- B. A disorder that causes loss of hearing in adulthood
- C. A memory disorder that affects the recall of recent events
- D. A form of color blindness that affects only red and green
Why: Synaesthesia is a neurological phenomenon in which stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second pathway, such as seeing colours when hearing sounds.
Q2. Which of the following is the most commonly reported form of synaesthesia?
- A. Grapheme-colour synaesthesia, where letters or numbers are perceived as coloured ✓
- B. Taste-touch synaesthesia, where tastes produce tactile sensations
- C. Smell-sound synaesthesia, where odours produce musical tones
- D. Pain-temperature synaesthesia, where pain feels hot or cold
Why: Grapheme-colour synaesthesia, in which letters or digits consistently evoke particular colours, is among the most frequently studied and commonly reported forms of the condition.
Q3. Is synaesthesia typically consistent over time for an individual?
- A. No, the associations change randomly from day to day
- B. Yes, a synaesthete's associations tend to remain stable across their lifetime ✓
- C. No, the associations disappear completely after childhood
- D. Only if the person receives specific training
Why: One of the key features of synaesthesia is its consistency: for example, a person who sees the letter A as red will typically continue to do so throughout life, which helps distinguish it from imagination or learned associations.
Q4. Which term describes a person who experiences synaesthesia?
- A. Synaesthete ✓
- B. Neurologist
- C. Phonologist
- D. Kinesthete
Why: A person with synaesthesia is called a synaesthete. The term is used in both research and everyday discussion of the phenomenon.
Q5. Synaesthesia is believed to run in families, which suggests what?
- A. It is caused entirely by environmental factors such as diet
- B. It has a genetic component ✓
- C. It only develops after a head injury
- D. It is caused by wearing certain types of glasses
Why: Family studies indicate a hereditary element to synaesthesia, with the condition appearing more often among relatives than in the general population, pointing to a genetic contribution.
Module 7
Module 7: Topic 7
Topic 7
Knowledge check
Q1. What is synaesthesia?
- A. A condition in which a person sees colours only in dreams
- B. A neurological condition in which stimulation of one sense automatically triggers an experience in another sense ✓
- C. A disorder that causes loss of hearing in one ear
- D. A memory disorder that makes it hard to recall past events
Why: Synaesthesia is a neurological condition where stimulating one sensory or cognitive pathway leads to involuntary experiences in a second, unrelated pathway, such as hearing sounds triggering colour perceptions.
Q2. Which of the following is the most common form of synaesthesia?
- A. Grapheme-colour synaesthesia ✓
- B. Olfactory-touch synaesthesia
- C. Taste-sound synaesthesia
- D. Thermal-visual synaesthesia
Why: Grapheme-colour synaesthesia, in which letters or numbers are consistently associated with specific colours, is among the most commonly studied and reported forms.
Q3. What does it mean that synaesthetic experiences are 'involuntary'?
- A. They can be switched on and off at will
- B. They occur automatically without the person choosing or controlling them ✓
- C. They only happen when the person is under stress
- D. They can only be triggered by medication
Why: Involuntary means the synaesthetic experience happens automatically whenever the trigger stimulus is present, without conscious effort or control by the person.
Q4. Which term describes a person who experiences synaesthesia?
- A. Synaesthete ✓
- B. Neuropath
- C. Perceptualist
- D. Sensorian
Why: A person with synaesthesia is called a synaesthete, a term used in both research and everyday discussion of the condition.
Q5. Synaesthesia is generally considered to be:
- A. A serious illness requiring medical treatment
- B. A learned skill that anyone can develop with practice
- C. A condition that tends to run in families and is often present from childhood ✓
- D. A side effect that appears only after brain injury
Why: Synaesthesia is typically developmental, present from early childhood, and has a hereditary component, and it is usually not considered a disorder requiring treatment.