Answers for Synaesthesia - IELTS Reading Test

International English Language Testing System ( IELTS )

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Raushan Kumar
Updated on Nov 12, 2025 10:08 IST

By Raushan Kumar, Assistant Manager Content

Another Cambridge inspired passage - "Synaesthesia". This passage is an academic text and your fact check ability will be tested in it. The skills that you will gain after completing the passage will add up to your IELTS Prep Journey. While going through this passage, make sure to test out your skimming technique you learnt earlier. The passage has discussion on neurological phenomenon and experimental research. This passage helps improve Academic Reading Skills, such as recognizing main ideas. It is common in the IELTS Reading section . For more information on how to register for IELTS Exam, latest guidelines, IELTS Exam Date, feel free to check out the IELTS exam details on Shiksha.com One can download the answer key for the IELTS Reading Passage Synaesthesia PDF for better preparation.

IELTS Prep Tips for Synaesthesia Reading Passage

 

Tips Details
1. Skim and Scan the Passage - Get a quick overview of the passage.
- Identify key themes: synaesthesia’s definition, examples, scientific research, and its potential applications.
2. Identify the Main Idea of Each Paragraph - Summarize key points from each paragraph.
- Example:
- Paragraph A: Describes grapheme-colour synaesthesia with an example.
- Paragraph B: Defines synaesthesia and gives different examples.
3. Focus on Keywords and Synonyms - Look for words related to synaesthesia, such as "sensory connections," "neurological phenomenon," and "involuntary associations."
- Pay attention to synonyms: "scientists" instead of "researchers," "experiments" instead of "studies."
4. Practice Sentence Completion - Understand the passage structure to complete missing words correctly.
- Identify paraphrased sentences and focus on contextual clues to fill in gaps.
5. Be Aware of Paraphrasing - The passage may use different phrases to describe the same concept.
- Example: “Synaesthesia is not an illness” could be paraphrased as “It is not a medical condition.”
6. Avoid Spending Too Much Time on One Question - If a question is too difficult, move on and come back later.
- Manage your time wisely to ensure you attempt all questions.
7. Improve Vocabulary Knowledge - Learn words related to neuroscience and psychology, such as “cognitive,” “perception,” “hereditary,” and “stimulation.”
8. Review Your Answers - Double-check your answers to ensure they fit the context.
- Make sure sentence completion answers are grammatically correct.
9. Write Answers in UPPERCASE - Avoid mistakes related to capitalization and ensure clarity.
10. Practice with Similar Passages - Read articles on neurological disorders, cognitive science, and sensory experiences to improve comprehension.
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IELTS Reading Passage - Synaesthesia

The passage below "Synaesthesia" is inspired by the Reading Practice Test. You should spend about 20 minutes on Questions 1-13, based on the reading passage.

  1. Imagine a page with a square box in the middle. The box is lined with rows of the number 5, repeated over and over. All of the 5s are identical in size, font and colour, and equally distributed across the box. There is, however, a trick: among those 5s, hiding in plain sight is a single, capital letter S. Almost the same in shape, it is impossible to spot without straining your eyes for a good few minutes. Unless that is, you are a grapheme – colour synaesthete – a person who sees each letter and number in different colours. With all the 5s painted in one colour and the rogue S painted in another, a grapheme – colour synaesthete will usually only need a split second to identify the latter.

  2. Synaesthesia, loosely translated as “senses coming together” from the Greek words syn (“with”) and aesthesis (“sensation”), is an interesting neurological phenomenon that causes different senses to be combined. This might mean that words have a particular taste (for example, the word “door” might taste like bacon), or that certain smells produce a particular colour. It might also mean that each letter and number has its own personality-the letter A might be perky, the letter B might be shy and self-conscious, etc. Some synaesthetes might even experience other people’s sensations, for example feeling pain in their chest when they witness a film character gets shot. The possibilities are endless: even though synaesthesia is believed to affect less than 5% of the general population, at least 60 different combinations of senses have been reported so far. What all these sensory associations have in common is that they are all involuntary and impossible to repress and that they usually remain quite stable over time.

  3.  Synaesthesia was first documented in the early 19th century by German physician Georg Sachs, who dedicated two pages of his dissertation on his own experience with the condition. It wasn’t, however, until the mid-1990s that empirical research proved its existence when Professor Simon Baron-Cohen and his colleagues used fMRls on six synaesthetes and discovered that the parts of the brain associated with vision were active during auditory stimulation, even though the subjects were blindfolded.

  4. What makes synaesthesia a particularly interesting condition is that it isn’t an illness at all. If anything, synaesthetes often report feeling sorry for the rest of the population, as they don’t have the opportunity to experience the world in a multisensory fashion like they do. Very few drawbacks have been described, usually minimal: for instance, some words might have an unpleasant taste (imagine the word “hello” tasting like spoilt milk), while some synaesthetes find it distressing when they encounter people with names which don’t reflect their personality (imagine meeting a very interesting person named “Lee”, when the letter E has a dull or hideous colour for you-or vice versa). Overall, however, synaesthesia is widely considered more of a blessing than a curse and it is often linked to intelligence and creativity, with celebrities such as Lady Gaga and Pharrell Williams claiming to have it.

  5. Another fascinating side of synaesthesia is the way it could potentially benefit future generations. In a 2013 study, Dr Witthof and Dr Winawer discovered that grapheme-colour synaesthetes who had never met each other before experienced strikingly similar pairings between graphemes and colours-pairings which were later traced back to a popular set of Fischer-Price magnets that ten out of eleven participants distinctly remembered possessing as children. This was particularly peculiar as synaesthesia is predominantly considered to be a hereditary condition, and the findings suggested that a synaesthete’s environment might play a determining role in establishing synaesthetic associations. If that was true, researchers asked, then might it not be possible that synaesthesia can actually be taught?

  6. As it turns out, the benefits of teaching synaesthesia would be tremendous. According to research conducted by Dr Clare Jonas at the University of East London, teaching people to create grapheme-colour associations the same way as a synaesthete may have the possibility to improve cognitive function and memory. As she put it, ‘one possibility is guarding against cognitive decline in older people-using synaesthesia in the creation of mnemonics to remember things such as shopping lists.’ To that end, researchers in the Netherlands have already begun developing a web browser plug-in that will change the colours of certain letters. Rothen and his colleagues corroborate the theory: in a paper published in 2011, they suggest that synaesthesia might be more than a hereditary condition, as the non-synaesthetic subjects of their study were able to mimic synaesthetic associations long after leaving the lab.

  7. There is obviously still a long way to go before we can fully understand synaesthesia and what causes it. Once we do, however, it might not be too long before we find out how to teach non-synaesthetes how to imitate its symptoms in a way that induces the same benefits 4.4% of the world’s population currently enjoy.

Synaesthesia IELTS Mock Test

IELTS Reading Questions & Answers of Synaesthesia Passage

Questions 1-7
Complete the sentences below. 
Write NO MORE THAN ONE WORD OR A NUMBER from the text for each answer.

1. Rows of the number ________ line up the square box in the centre of the page.

Answer: 5
Answer location: Paragraph A
Explanation: The passage describes a square box in the middle of the page lined with rows of the number 5 repeated repeatedly.

2. The amalgamation of various __________ experiences is known as synaesthesia.

Answer: SENSORY
Answer location: Paragraph B
Explanation: The phenomena of combining various "sensory" experiences is referred to in the passage as synaesthesia.

3. The __________ of words is one characteristic of synaesthesia.

Answer: TASTE
Answer location: Paragraph B
Explanation: The passage mentions that one characteristic of synaesthesia is that words may have a particular taste, such as the word "door" tasting like bacon.

4. In synaesthesia, all sensory associations are __________,meaning they cannot be suppressed.

Answer: INVOLUNTARY
Answer location: Paragraph B
Explanation: The passage explains that sensory associations in synaesthesia are involuntary, meaning they occur without conscious control and cannot be repressed.

5. Synaesthesia is regarded as a _________ rather than a disease.

Answer: BLESSING
Answer location: Paragraph D
Explanation: The text states that synaesthesia is widely considered a blessing, not a disease, highlighting its positive perception among those who experience it.

6. The __________ way that synaesthetes perceive the world is something that they believe the general public does not have.

Answer: MULTISENSORY
Answer location: Paragraph D
Explanation: The text mentions that synaesthetes perceive the world in a multisensory way, which they believe the general population does not experience.

7. Although synaesthesia is usually thought to be a ____________ disorder, the study revealed that environmental factors may also be involved. 

Answer: HEREDITARY
Answer location: Paragraph E
Explanation: The test includes synaesthesia is typically regarded as a hereditary condition, but the study suggested that environmental factors might also play a role in its development.

Synaesthesia IELTS Reading Passage Answers with Explanations

Questions 8-13
Match each option with the correct feature, A-G.

Write the correct letter, A-G, in boxes 8-13 on your answer sheet.
A) Simon Baron-Cohen
B) Georg Sachs
C) Dr Clare Jonas
D) Rothen and his colleagues
E) Dr. Witthof and Dr. Winawer
F) Researchers in the Netherlands

8. First to record synaesthesia.

Answer: B
Answer Location: Paragraph C
Explanation: Georg Sachs, a German physician, was the first to document synaesthesia in the early 19th century. He included his own experience with the condition in his dissertation.

9. Used fMRI scans to prove synaesthesia's existence.

Answer: A
Answer Location: Paragraph C
Explanation: Simon Baron-Cohen and his colleagues were the first to use fMRI scans to scientifically validate synaesthesia by showing that the visual brain regions were active during auditory stimulation.

10. Developed a browser plug-in to help non-synaesthetes mimic synaesthetic associations.

Answer: F
Answer Location: Paragraph F
Explanation: Researchers in the Netherlands have developed a browser plug-in to replicate synaesthetic associations in non-synaesthetes, aiming to explore the possibility of learning or reproducing synaesthetic experiences.

11. Suggested synaesthesia can be taught to non-synaesthetes.

Answer: C
Answer Location: Paragraph F
Explanation: Dr. Clare Jonas's research suggests that learning synaesthesia can enhance memory and cognitive function, especially in the elderly, supporting the idea that non-synaesthetes can learn synaesthesia.

12. Found that environmental factors could influence synaesthesia.

Answer: E
Answer Location: Paragraph E
Explanation: Dr. Witthof and Dr. Winawer discovered that environmental influences, such as exposure to certain toys like Fischer-Price magnets, could shape the colour associations in grapheme-colour synaesthesia, suggesting that it may not be entirely genetic.

13. Published findings suggesting synaesthesia could be mimicked in non-synaesthetes.

Answer: D
Answer Location: Paragraph 
Explanation:  Rothen and his colleagues published a paper in 2011 suggesting that non-synaesthetes could mimic synaesthetic experiences. This supports the theory that synaesthesia might be teachable or induced in people who don’t naturally have it.

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