Every IELTS Reading passage comes with questions that test how well you actually understood it. This page covers The Triune Brain Reading Answers, one question at a time, and works just as well if you found it through The Triune Brain Reading Answers Mini IELTS practice sets.
The passage is about the human brain. Scientists split it into three parts, each one showing up at a different point in evolution. The reptilian cortex runs the basics, breathing, heartbeat, staying alive, without you ever thinking about it. The limbic cortex handles emotions and bonding with others. The neocortex is what sets humans apart; it lets you plan ahead and reason things through instead of just reacting on the spot.
You'll find 13 questions here, spread across 7 paragraphs. Along with the answer key, each one comes with The Triune Brain reading answers with explanation, so you're not just copying an answer; you actually know why it's right.
The question types shift as you go, matching statements to a brain region, filling gaps in a summary, and completing sentences with words taken straight from the text. To get through them, you'll need to scan for exact details, spot when a question rewords something from the passage, and follow how the ideas move from one paragraph to the next.
The Triune Brain IELTS Reading Passage
Every IELTS Reading passage gives you a short text first, then questions built around it. The Triune Brain IELTS Reading Answers passage shows up often in practice sets of the IELTS exam, and it's packed with scientific terms, so knowing how to break it down matters more than just reading fast.
Here's a strategy worth using before you even start reading properly. Glance through the questions first. Then read the passage. Then go back to the questions once more.
Doing it this way tells you what to actually watch for. You're not treating every sentence the same; you're picking out the parts tied to specific questions. Once the passage is done, head back to the questions and match what stood out to what's being asked.
The Triune Brain IELTS Reading Passage
Paragraph 1: Scientists have identified the reptilian cortex as the first of our three brain regions to evolve. This brain ensures that the body can do the most fundamental functions necessary for survival, like breathing, resting, and keeping the heart pumping. It is not necessary for us to "think" about these pursuits. The "startle centre," a system that allows us to respond quickly to sudden and unexpected events, is likewise located in the reptilian cortex. The reptilian cortex is responsible for your startled lurch when a door smashes elsewhere in the house and your heightened awareness when a twig cracks in a nearby bush on your evening stroll. The reptilian brain has only the most primitive impulses when it comes to social interaction, such as aggression, mating, and territorial defence. A crocodile protecting its territory along the river is no different from a turf fight between rival gangs in the city.
Paragraph 2: The lizard may be possessive of its territory, but it doesn't care one bit about the welfare of its offspring. It is evident that something new is happening when one hears the emergency call of a dolphin separated from its pod or when one sees elephants grieving for their dead. The limbic cortex has been recognised by scientists. The limbic cortex, found only in mammals, motivates animals to care for their young by flooding the parent with sensations of love and comfort while their young are in direct range. Mammals, like humans, are motivated to form bonds with others through emotional experiences. Our pleasant feelings of togetherness, unity, and comfort are amplified when we are with people of "our kind," whether at a soccer practice, a church service, a school assembly, or a bar. We become lonely and motivated to seek connection if we spend too much time apart from these networks.
Paragraph 3: It is only in humans that these two cortices are responsible and are able to scratch the surface of what is possible. We eat, sleep, and play like any other animal, but we also talk, scheme, reason, and argue over the finer details of morality. The neocortex, the expansive third brain responsible for reasoning, planning, and conceptualisation, is largely responsible for our special abilities. The neocortex's strength lies in its capacity to reflectively consider issues beyond the scope of the immediate situation. Although some mammals, like apes, can learn and remember basic lessons, only humans are capable of considering the "big picture" at the same time as acting on impulse. We can construct complex theories of physical or social phenomena by stringing together elementary insights (an apple falls from a tree; hurting others leads to unhappiness, etc.). (For example, gravitation laws and a concern for human rights).
Paragraph 4: When strung together, these decisions can add up to achievements that cannot be matched by any other animal. When a student knows that getting enough sleep will help them perform better on an exam the next day, it can be easier to overcome the limbic system's natural instinct to keep them up late socialising. This unending dedication over three years will yield a first-class degree and funding for further education; over a lifetime, it could lead to significant advancements in our understanding of the world and its inhabitants. The neocortex is responsible for our ability to delay gratification now in exchange for greater rewards later.
Paragraph 5: The complexity of brain damage and mental disorders can be better understood with a Triune Brain in mind. For instance, brain death is widely recognised as the most severe form of brain damage. The person may appear to be merely unconscious, perhaps sleeping, but this is a deceptive appearance. In this case, the reptilian brain is operating automatically despite the unrecoverable breakdown of other cortices.
Paragraph 6: It's important to note that the limbic cortex registers disturbances in a different way. Pups with brain injuries to the limbic system are able to get around and take care of themselves nutritionally, but they are unaware of their littermates' presence. According to the scientists, "one impaired monkey stepped on his outraged peers as if treading on a log or a rock" after undergoing a limbic lobotomy. In humans, damage to the limbic system is linked to sociopathic behaviour. Full-neocortex sociopaths are typically as shrewd and emotionally intelligent as the average person, but they have severe difficulties forming meaningful connections with others and showing compassion.
Paragraph 7: A metal rod skewered railway worker Phineas Gage's skull, removing a significant portion of his neocortex, and yet he survived the injury. Gage's coworkers noticed a change in his equilibrium, even though he continued to live and work as before. Even as his intellectual abilities declined, Gage's animal tendencies became more pronounced, and he began making increasingly crude jokes. Nonetheless, recent research suggests that Gage was able to smooth out these distressing transitions and rediscover acceptable social behaviour over time. This suggests that patients with severe brain injuries may benefit from reparative therapy in order to improve their quality of life.
The Triune Brain Reading Answers with Explanations
This passage carries 13 questions, three different formats, and IELTS reading the Triune Brain answer sets almost always follow this same grouping. Questions 1 to 5 want you to match a statement to a brain region. Questions 6 to 9 require you to complete a summary. Questions 10 to 13 ask for sentence completion. Students rarely lose marks because the passage is tough; they lose marks by skipping over the exact wording a question uses.
Each answer below comes with the paragraph it's from, plus the Triune Brain reading answers with explanation you can actually follow, not a one-liner. That way, you actually get why an answer works, instead of just memorising the letter or word.
Questions 1–5 Matching Feature Answers and Explanations
Each of these five statements needs to be sorted under A for reptilian cortex, B for limbic cortex, or C for neocortex. Read the whole statement before picking; this is usually where students searching for the Triune Brain IELTS Reading Answers lose the most marks.
Q1: Giving up happiness in the short term for gains in the long run.
Answer: C
Explanation: The passage's fourth paragraph gives the neocortex credit for letting us trade short-term pleasure for a bigger payoff later, using the example of a student sleeping early instead of socialising, so they perform better the next day. That trade-off, giving up now for something better later, is neocortex behaviour through and through.
Q2: Maintaining the functions of the body that are necessary for life.
Answer: A
Explanation: Right at the start of paragraph 1, the reptilian cortex gets described as the part running the basics, breathing, resting, keeping your heart going. You never consciously think about any of it, which is exactly why it's grouped under this brain region and not the others.
Q3: To feel the pain of losing someone.
Answer: B
Explanation: Paragraph 2 brings up a dolphin crying out after losing its pod and elephants mourning their dead. Both point to grief, and the passage credits that kind of emotional depth to the limbic cortex, the part responsible for bonding and connection between living beings.
Q4: Putting together groups and communities.
Answer: B
Explanation: The same paragraph explains how the limbic cortex pushes mammals toward each other, creating that sense of togetherness people feel at a match, a service, or just being around their own kind. Building that kind of community feeling is limbic cortex work, not neocortex or reptilian.
Q5: Making a choice and sticking to it.
Answer: C
Explanation: This loops back to paragraph 4 again. It's not just about thinking long-term; the neocortex also lets you actually commit to that thinking, like choosing sleep over a night out because of what it leads to later. Deciding something and holding onto it despite temptation is neocortex, plain and simple.
Questions 6–9 Summary Completion Answers and Explanations
You're filling in blanks here using words straight from the passage. Keep to the limit, no more than two words and/or a number per blank.
Q6: The ______ excels in looking at the big picture and thinking about things that might not be immediately relevant.
Answer: Neocortex
Explanation: Paragraph 3 says the neocortex's biggest strength is looking past the immediate moment, thinking about the bigger picture. That's exactly the idea the blank is pointing at, so neocortex is the only fit.
Q7: Other species, like ______, have a somewhat good memory and can acquire new information, but only humans can think strategically while also acting on impulse.
Answer: Apes
Explanation: The passage sets up a comparison, saying some mammals, apes in this case, can learn and remember simple lessons. But that's where it stops for them; they don't get the extra ability humans have.
Q8: Only humans can think strategically while also acting on ______.
Answer: Impulse
Explanation: Same sentence, different half. Humans can think about the big picture while still acting on impulse, at the exact same time, something apes can't manage. Impulse is the word the passage uses for that instinctive side.
Q9: Simple observations can be strung together to form more ______ of physical or social phenomena.
Answer: Elementary insights
Explanation: Paragraph 3 talks about small, basic observations, like an apple falling off a tree, getting linked together to form bigger theories, with gravity being the example given. The passage's own phrase for those small starting observations is elementary insights.
Questions 10–13 Sentence Completion Answers and Explanations
Four blanks are left, each needing no more than two words taken from the passage. Spot the keyword in the sentence, then hunt for it, or something close to it, in the text.
Q10: A person who only has a reptilian cortex that functions is called ______.
Answer: Brain dead
Explanation: Paragraph 5 describes a state where only the reptilian cortex keeps working, while the other two brain regions have suffered damage that can't be reversed. The passage names this condition directly as brain-dead, even if the person looks like they're just sleeping.
Q11: ______ in humans is associated with disorders in the limbic system.
Answer: Sociopathic behaviour
Explanation: Paragraph 6 states that damage to the limbic system in humans gets linked to sociopathic behaviour. The passage backs this up with an example of a monkey that stopped recognising its own peers after limbic damage.
Q12: Phineas Gage lost part of his ______ because of an accident in the industry.
Answer: Neocortex
Explanation: Paragraph 7 tells the story of Phineas Gage, a railway worker who survived a metal rod going through his skull. The passage specifically says a significant portion of his neocortex was removed in the accident.
Q13: After his accident, Gage's coworkers noticed a difference between ______ and how he thought.
Answer: Animal tendencies
Explanation: Still in paragraph 7, Gage's intellectual abilities dropped after the accident, but his animal tendencies got stronger, showing up as crude jokes and behaviour. Animal tendencies is the exact phrase the passage uses, and the blank needs.
How to Solve The Triune Brain IELTS Reading Passage
This passage keeps using words like reptilian cortex, limbic cortex, and neocortex. Sound unfamiliar? Don't worry about it. You don't need a science background, just a way to keep track of which term goes where.
Most students don't lose marks because this passage is hard. They lose marks by rushing past the brain terms instead of figuring out which region each one belongs to, especially in paragraphs 3 and 4 where the neocortex does most of the work.
Identify Scientific Keywords and Paraphrases
Terms like reptilian cortex, limbic cortex, and neocortex show up in set places, not scattered everywhere. That makes them easy to track down.
Neocortex: mostly in paragraphs 3 and 4
Reptilian cortex: mostly in paragraph 1
Limbic cortex: mostly in paragraph 2
These words don't just pop up randomly, so they point you to the right paragraph fast
Sometimes a question swaps the exact word for something simpler.
Passage says: "delay gratification"
Question might say: "giving up something now for later"
Same idea, just said differently
Separate Different Brain Structures and Ideas
Three brain regions run through this passage, and mixing them up is the easiest way to lose marks.
Reptilian cortex: breathing, heartbeat, instinct, no thinking needed
Limbic cortex: emotion, bonding, feeling close to others
Neocortex: reasoning, planning, thinking ahead
Don't just match a term to whatever word feels familiar. Read what the sentence is actually saying, then match it to the right region.
Confirm Answers From Context
One matching word isn't enough here. The same term can show up near more than one brain region if you're not paying attention.
Read the full sentence, not just the word that caught your eye
Check the sentence right before and after it, too
Make sure the full meaning fits the question, not just one word
Common Mistakes in The Triune Brain Reading Answers
Getting the passage right doesn't always mean getting the answers right. Most students who lose marks here already understood what the passage was saying; they just slipped up on how they picked their final answer. Here are the mistakes that trip people up most, and what to do instead.
✗ Common Mistake
✓ What to Do Instead
Confusing the reptilian cortex, limbic cortex, and neocortex
Check which brain region the statement is actually describing. Reptilian is survival, limbic is emotion, neocortex is reasoning
Picking an answer just because one word matches
Read the full sentence around that word. A match doesn't always mean the meaning fits
Searching only for the exact words used in the question
Look for the same idea worded differently, like "delay gratification" showing up as "giving up something now for later"
Mixing up the examples given in the passage
Phineas Gage and the injured monkey illustrate different kinds of brain damage. Keep track of which example supports which point
Ignoring the word limit in an answer
Check the instructions above the question first. A correct answer still loses marks if it goes over the limit
Give your answers one more look before you submit, especially around paragraphs 6 and 7, where the passage moves between different examples of brain damage close together.
Looking for more IELTS Reading practice? Read these answer guides to practise different passage topics and question types:
Getting through the Triune Brain reading answers isn't about memorising which letter or word goes where. It's about knowing which brain region a statement is pointing to before you even start scanning the text.
Matching Feature questions need you to check meaning, not just vocabulary, since a statement can sound like it fits more than one brain region at first glance. Summary and Sentence Completion need you to pull the exact word from the passage while staying within the word limit given.
A few things matter most here:
Knowing which brain region a statement is describing before you start scanning
Locating specific paragraph information instead of going off memory
Catching paraphrased wording instead of hunting for exact matches
Reading the full sentence around a keyword, not just the keyword itself
Sticking to word limits and instructions exactly as given
Checking your answer against the passage once more before moving on
If you're prepping for this passage or similar ones, try these next:
Practise a few more Matching Feature and Summary Completion passages
Lean on what's written in the text, not assumptions or outside knowledge
Time yourself while solving, it helps with both speed and accuracy
Go back over every wrong answer and figure out where it slipped, don't just memorise the right one
What is the Triune Brain IELTS Reading passage about?
It explains how the human brain works through three parts: the reptilian cortex, limbic cortex, and neocortex. Each one evolved at a different point and controls a different set of functions, from basic survival to long-term reasoning.
How many questions are there in The Triune Brain Reading passage?
The Triune Brain Reading Answers cover 13 questions spread across 7 paragraphs. They come in three formats, so the question style changes as you move through the set.
What question types are included in The Triune Brain IELTS Reading passage?
Questions 1 to 5 are Matching Features, 6 to 9 are Summary Completion, and 10 to 13 are Sentence Completion. Each format tests a slightly different reading skill, so knowing which one you're on matters.
Where can I find The Triune Brain Reading Answers with explanation?
This page has all 13 answers, each one paired with the exact paragraph it comes from. That way, you're not just checking if you got it right; you're seeing why the answer works.
How should I approach The Triune Brain IELTS Reading questions?
Read the questions before the passage, then read the passage properly, then go back to the questions. This tells you what to scan for instead of treating every line the same way.
Why is paraphrasing important in The Triune Brain Reading passage?
IELTS reading the Triune Brain answer questions rarely use the exact wording from the passage. A phrase like "delay gratification" might turn up as "giving up something now for later," so catching meaning matters more than catching exact words.
How can I avoid confusing the reptilian cortex, limbic cortex, and neocortex?
Keep each function separate in your head as you read: reptilian for survival, limbic for emotion, neocortex for reasoning. Match the statement to the function it describes, not to whichever term sounds familiar.
Is the Triune Brain Reading Answers Mini IELTS version different from the full passage?
Not really, a Mini IELTS version usually keeps the same 13 questions and the same passage. It's just packaged as a shorter practice set, often for quick revision.
Can I use The Triune Brain reading answers to practice for a real IELTS test?
Yes, the question types mirror what shows up on the actual test. Working through this passage builds the same scanning and paraphrasing skills you'll need on exam day.
How is Phineas Gage's injury explained in The Triune Brain reading answers?
Paragraph 7 covers how a metal rod damaged part of his neocortex during a work accident. The explanation connects that injury to the behavioural changes his coworkers noticed afterward.
How can I improve my score using The Triune Brain Reading Answers?
Go through each answer and understand why it's correct, not just what it is. Then retry the passage without checking the key, so you can see what actually stuck.
upGrad Abroad Editorial Team |4974 articles published
We are a dedicated team of study-abroad experts, ensuring intensive research and comprehensive information in each of our blogs. With every piece written, we aim at simplifying the overseas education ...
Refer Your Friend & Earn upto ₹15000
Help your friend upgrade to a Global Career and earn rewards together.
