Thomas International GIA Test: The 5 Sections Explained
If an employer has sent you a link to a "Thomas International assessment", you are probably facing one of two very different things: a short questionnaire about how you behave at work, or a fast-paced series of mini-tests called the GIA. Sometimes both. The GIA rewards preparation more than almost any aptitude test I coach for, because its formats are so unusual that first-timers lose half their time working out what is being asked.
This guide explains who Thomas International is, how to tell which assessment you have been invited to, how each of the five GIA sections works (with worked examples of our own), how the results are reported, and a realistic plan to prepare.
Who Is Thomas International?
Thomas International is a UK-based assessment provider that has sold psychometric tools to employers for decades. Its natural habitat is not the giant graduate scheme but small and mid-sized companies, recruitment agencies and hiring managers who want a quick, practical read on a candidate. That matters for you: in a Thomas process, the hiring manager often reads your report personally. You get an email invitation and complete the tasks online, at home or at the employer's office.
GIA or PPA: Which One Have You Been Invited To?
Thomas offers several assessments, but candidates almost always meet one of these two.
The Personal Profile Analysis (PPA), also marketed as Thomas's Behaviour or DISC assessment, is a behavioural questionnaire built on the DISC model: Dominance, Influence, Steadiness and Compliance. It is short (Thomas talks about well under ten minutes) and uses a forced-choice format: you see groups of four adjectives and pick the one that is most like you and the one that is least like you. There is no pass mark. Your profile is compared with what the role needs and used as input for the interview. If you want to understand the model behind it, our guide to the DISC personality test covers the four factors.
The General Intelligence Assessment (GIA) is the ability test. It measures how quickly you take in and process new information, which Thomas positions as a predictor of how fast you will learn a new job. It consists of five separate timed tasks, and this is where preparation pays off.
How to tell them apart: "tasks", a duration of half an hour or more, or a request to use a mouse in a quiet room means GIA. A few minutes and "no right answers" means PPA. When in doubt, ask the recruiter; nobody will hold it against you.
How the GIA Works
The GIA consists of five tasks taken one after the other, ideally in a single sitting. Each task is very short and strictly timed: Thomas's own candidate booklet says each lasts between two and five minutes, with the whole series including instructions taking roughly 30 to 45 minutes. Before every task you get instructions and eight practice items that do not count.
Two features make the GIA different from the numerical and verbal tests most people know:
- The questions are easy; the clock is not. The test measures how many you can do correctly in the time available.
- Speed and accuracy both count. Thomas explicitly tells candidates that both matter equally. Racing is not a winning strategy, and neither is triple-checking.
You answer by clicking with the mouse; no keyboard needed. If you normally use a trackpad, plug in a mouse anyway.
For broader context on how online ability tests are built and delivered, see our overview of online aptitude tests.
Section 1: Reasoning
What you do. You read a short statement comparing two people on some quality, such as who is taller, faster or more cautious. When you have understood it, you click, the statement disappears, and a question appears asking which of the two people fits a description. You have to answer from memory.
Example (our own). The statement reads: "Sanne is not as patient as Joris." You click. The screen now asks: "Who is less patient?" with the options Sanne and Joris. The answer is Sanne. Note the trick: a negative statement, then a question in the opposite direction. Harder items stack these twists, using passive phrasing or double negatives such as "Joris is not less patient than Sanne".
What it really tests. Holding a relationship in short-term memory and flipping it without losing track. The difficulty is not logic; it is that the statement vanishes.
Speed/accuracy tip. You control how long you look at the statement, and that is the trap. An extra two seconds here is fine; clicking before the relationship is fixed in your head is not, because you cannot look back. Translate every statement into a single picture before clicking, for instance "Joris is the patient one". One fixed image beats re-reading the sentence three times.
Section 2: Perceptual Speed
What you do. You see four vertical pairs of letters, each pair one letter above another. Your job is to count how many pairs show the same letter, where capitals and lowercase count as the same. You click an answer from 0 to 4.
Example (our own). The four pairs are: B over b, g over q, T over t, n over N. B/b match, g/q do not, T/t match, n/N match. The answer is 3.
What it really tests. Fast, accurate visual checking while ignoring an irrelevant difference (upper versus lower case).
Speed/accuracy tip. Don't translate letters into words or sounds in your head; just scan left to right and keep a running count on your fingers or in your head. Drill the "same letter, different case" rule until it is automatic; after that, this is where speed gains come most easily.
Section 3: Number Speed & Accuracy
What you do. You see three numbers. You identify the highest and the lowest, then decide which of those two is further away from the remaining middle number. You click on that number.
Example (our own). The numbers are 9, 15 and 11. The lowest is 9, the highest is 15, the middle one is 11. 9 is two away from 11; 15 is four away. The answer is 15.
What it really tests. Quick mental arithmetic and, more importantly, keeping a three-step procedure straight under pressure. The sums are trivial; the mistakes come from clicking the wrong number after doing the maths right.
Speed/accuracy tip. Use the same order every time: find the middle number first, then compare the two distances. Where the gap is obvious at a glance (say 2, 3 and 40) trust your eye and click. Do the actual subtraction only when the distances look close.
Section 4: Word Meaning
What you do. You see three words. Two of them are related, usually because they mean the same thing or the opposite thing. The third is the odd one out, and you click it.
Example (our own). The words are "rapid", "swift" and "kettle". Rapid and swift are synonyms, so kettle is the odd one out. A trickier version: "ascend", "descend" and "garden". Ascend and descend are opposites, which is still a relationship, so garden is the odd one out.
What it really tests. Vocabulary and the speed with which you recognise relationships between words.
Speed/accuracy tip. Remember that opposites count as related. People who look only for synonyms get stuck on items where two words clearly mean opposite things. If you don't know one word, work by elimination: if the other two words are clearly related, the unknown one is your answer. Taking the GIA in your second language? Practise this section most.
Section 5: Spatial Visualisation
What you do. You see boxes, each containing a pair of symbols: one on top, one below. The bottom symbol is rotated, and it is either the same symbol or its mirror image. You count how many boxes contain a genuine match (same symbol, just rotated) and click that number.
Example (our own). Imagine the letter F as the symbol. Box one shows an F on top and an F turned upside down below: that is the same F rotated by 180 degrees, so it matches. Box two shows an F above and a backwards F lying on its side below: that is a mirror image, and no rotation will turn it back, so no match. Box three shows an F above and an F turned a quarter clockwise below: a match. The answer is 2.
What it really tests. Rotating shapes in your head, quickly and reliably, and distinguishing rotation from reflection.
Speed/accuracy tip. Don't rotate the whole symbol; track one feature. Pick a distinctive part (for an F, the direction the arms point relative to the stem) and check whether it sits on the same side after rotation. Mirror images always put that feature on the wrong side. Practice turns slow mental rotation into near-instant recognition.
How GIA Results Are Reported
Be cautious with anyone who promises you a specific "pass score". What we know is this: your result on each task reflects both how many items you attempted and how many you got right, and your scores are compared with a norm group of previous test takers. The employer typically sees an overall result plus results per task, presented as an indication of your learning speed or "trainability": how quickly you are likely to get up to speed in a new role.
Thomas does not publish a universal cut-off; the employer decides how much weight the GIA carries. In my experience, hiring managers look at the overall picture and use a weaker task as an interview talking point rather than a reason to reject. A very low overall result can still end an application, though.
The PPA is reported differently: as a behavioural profile across the four DISC factors, with no score to pass or fail.
An Honest Preparation Plan
Your underlying ability does not change in a week, but your familiarity with five unusual formats does, and on the GIA that gap is large. If you have a few days:
Day 1: learn the rules cold. Read the explanation of each section above and do untimed examples until you never have to think about the rules again. Most first-time errors are rule errors.
Days 2 and 3: timed practice per section. Practise each task in short timed blocks. Track two numbers: how many you attempt and how many you get right. Near-perfect accuracy but few attempts? Push your speed. Fast but sloppy? Ease off slightly. Our Thomas International practice tests reproduce all five formats with timing, which is the closest you can get to the real experience.
Day 4: full run-throughs. Do the five tasks back to back, in one sitting, as you will on the day.
On the day: quiet room, mouse plugged in, notifications off, phone in another room. Use the practice items to warm up, and if one task goes badly, let it go: the next starts with a clean slate.
If the role also uses other cognitive tests later in the process, the skills overlap. The CCAT, for example, is another short, high-speed test where the same speed/accuracy discipline applies.
Frequently Asked Questions
How long does the Thomas International GIA take?
Each of the five tasks lasts only a few minutes (Thomas states between two and five), and the full series including instructions and practice items takes roughly 30 to 45 minutes. Do it in one sitting.
Is the Thomas GIA the same as the Thomas personality test?
No. The GIA is a timed ability test of how quickly you take in and process new information. The behavioural assessment, the Personal Profile Analysis (PPA), is a short DISC-based questionnaire with no right or wrong answers. Employers may use one or both.
Should I guess on the Thomas GIA?
Thomas tells candidates that speed and accuracy count equally. Don't click randomly, but don't freeze on one item either: make a quick, reasoned choice and move on, because time spent stuck costs you more than a single miss.
Can I find Thomas GIA questions and answers online?
You will find lists claiming to be the real questions, but they won't help much. The items are short, simple and answered against the clock, so what matters is fluency with the five formats, not memorised answers.
How are Thomas GIA results reported?
Your scores reflect both speed and accuracy and are compared with a norm group, typically shown as an overall result plus results per task. Employers use them as an indication of how quickly you are likely to learn a new role, alongside interviews and other information.
Conclusion
The Thomas International GIA is not a test of brilliance but of how quickly and cleanly you handle simple information, which is exactly what practice improves. Learn the five rules cold, find your speed/accuracy balance per task, and do one full run-through before the real thing. If you want to practise all five sections against the clock, start with our Thomas International GIA practice. And if the invitation turns out to be the PPA instead, relax: just answer honestly.