Aon ADEPT-15 personality test: format and preparation
Aon ADEPT-15 is a workplace personality assessment. It presents pairs of statements and adapts later comparisons using earlier responses. Unlike a cognitive test, it is not asking you to calculate a correct answer; it estimates relative preferences across 15 traits.
Who this guide is for: Candidates whose assessment invitation specifically names Aon ADEPT-15 or an Aon personality questionnaire.
Scope: This guide covers Aon's published format and preparation principles. It does not reproduce the proprietary item pool, adaptive model or employer scoring rules.
- ADEPT-15 is separate from Aon's timed ability challenges.
- Aon describes 15 traits and an adaptive pairwise format.
- The assessment takes about 30 minutes according to Aon.
- Consistency and an honest work context matter more than guessing a target profile.
At a glance
| Question | Direct answer |
|---|---|
| Provider | Aon. |
| Published model | 15 workplace personality traits. |
| Question style | Pairwise, multidimensional forced choice. |
| Published timing | Approximately 30 minutes. |
| Delivery | Computer adaptive, with later pairs informed by earlier responses. |
How the adaptive format works
You choose which of two statements is more like you. The system can select later pairs based on information already gathered, making the questionnaire more efficient and comparisons more targeted. Aon describes a large item-pair pool, so candidates should not expect identical sequences.
Adaptive does not mean the system is trying to catch one wrong response. It means the next comparison can add information where your relative preferences are still uncertain.
What the 15 traits mean for candidates
ADEPT-15 produces a workplace-oriented trait profile that employers can connect with competencies, roles or culture. Interpretation is multivariate: the meaning comes from patterns across traits, not one isolated high or low score.
This is why online answer keys are unreliable. The same preference can be useful in one role, neutral in another and balanced by other characteristics.
A sensible preparation approach
Read the role description so you understand the work, but answer from your typical behaviour rather than copying its adjectives. Choose a stable reference period and workplace-like context. When both statements fit, select the one that is more consistently true—not the one that sounds grander.
- Complete the assessment when rested and uninterrupted.
- Keep work or study-team behaviour as your reference context.
- Do not alternate personas across questions.
- Expect trade-offs; both statements may be attractive.
ADEPT-15 versus SHL OPQ
Both assess occupational personality and use forced comparisons, but they are distinct products with different trait models and scoring. Do not assume OPQ practice reproduces ADEPT-15. Familiarisation transfers at the level of comparing plausible statements, not at the level of an official score.
Source notes
Aon’s official ADEPT-15 page describes 15 traits, pairwise multidimensional forced choice, computer-adaptive delivery, roughly 30 minutes and a pool of more than 200,000 possible item pairs.
Related guides
What to do next
Treat ADEPT-15 as a structured comparison of normal work preferences. Read both statements, use one consistent context and avoid switching personas to match isolated words in the job description.
Practise forced-choice decisions
Get comfortable comparing workplace statements while keeping one consistent behavioural context.
Try personality practiceFrequently asked questions
What is Aon ADEPT-15?+
It is Aon's workplace personality assessment, using adaptive pairs of statements to estimate 15 personality traits.
How long does ADEPT-15 take?+
Aon's product page describes an approximate completion time of 30 minutes, though employer instructions should take priority.
Is ADEPT-15 the same as an Aon ability test?+
No. ADEPT-15 measures workplace personality. Aon also offers timed ability assessments such as numerical and logical challenges.
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