Psychometric tests are structured assessments that measure psychological attributes, typically cognitive abilities, personality traits, or behavioural tendencies, in a standardised way that allows for comparison across individuals. Employers have used them for over a century; their use has grown significantly in digital recruitment because they can be administered to thousands of candidates at low cost and produce consistent, legally defensible selection data. Knowing what each type measures, what it predicts, and how it works helps you both prepare for them and interpret what results mean about yourself and your role fit.
Cognitive Ability Tests
Cognitive ability tests measure general intelligence (the g factor) and specific cognitive dimensions. They are among the strongest predictors of job performance available to employers, particularly for complex, cognitively demanding roles.
Numerical Reasoning
Presents numerical data (tables, graphs, percentages, ratios) and asks questions that require analysis and interpretation rather than mental arithmetic. The bottleneck is typically data interpretation speed, not calculation. Used widely in financial services, consulting, data-intensive roles, and general graduate assessment.
Verbal Reasoning
Presents passages of text and asks questions about the logical implications, whether specific statements follow from the passage, or can't be determined. Tests ability to read carefully, draw accurate inferences, and avoid being swayed by prior knowledge. Used in roles requiring analysis of complex documents, policy, or legal texts.
Abstract/Logical Reasoning
Presents sequences or matrices of shapes and asks candidates to identify the rule governing the pattern. Measures fluid intelligence, the ability to solve novel problems without relying on prior knowledge or learned skills. Strong predictor of learning speed and performance in environments where rules change.
Situational Judgement Tests (SJTs)
Presents workplace scenarios and asks candidates to choose from a set of responses or rank them from most to least appropriate. Measures implicit situational knowledge and professional judgement. Developed specifically for roles where interpersonal and situational competence matters, management, healthcare, teaching, customer-facing roles.
Inductive and Deductive Reasoning
Inductive reasoning tests generalise from specific examples to rules. Deductive reasoning tests apply given rules to reach conclusions. Both measure logical thinking, with deductive tests more closely related to verbal and analytical processing and inductive tests more closely related to abstract pattern recognition.
Personality Assessments
Personality assessments measure stable individual differences in how people typically think, feel, and behave. Unlike cognitive tests, there are no right or wrong answers, the assessment is comparing your profile against role requirements or population norms.
Big Five (OCEAN) Instruments
The most empirically robust personality model. Measures openness, conscientiousness, extraversion, agreeableness, and neuroticism (emotional stability). Used in research and increasingly in hiring because the five factors predict different performance dimensions: conscientiousness is associated with job performance across most roles; emotional stability predicts management effectiveness and stress resilience; openness predicts creative and learning performance.
MBTI and Type Indicators
The Myers-Briggs Type Indicator and related instruments categorise people into 16 types based on four dichotomies (I/E, N/S, T/F, J/P). Widely used in corporate development and team-building contexts. The research on MBTI's predictive validity for job performance is weaker than for Big Five instruments; it's more useful as a communication tool and for team dynamics discussion than as a hiring selection instrument.
OPQ (Occupational Personality Questionnaire) and Similar Work-Specific Instruments
Personality instruments designed specifically for occupational contexts, measuring dimensions like persuasiveness, leadership style, need for detail, and social confidence that are more directly relevant to work behaviour than general personality measures. SHL's OPQ is among the most widely used in large employers.
Behavioural and Competency-Based Assessments
These focus on how a person behaves in specific situations, measuring actual behavioural tendencies rather than trait descriptions.
Assessment Centres
Not a test type but a methodology: candidates complete a mix of exercises (group discussions, role plays, in-tray exercises, presentations) while trained assessors rate performance against defined competencies. Expensive to run but among the most valid selection methods for senior or complex roles because they observe actual behaviour rather than self-report.
360-Degree Feedback Instruments
Not typically used for selection but widely used for development. Collects structured feedback from direct reports, peers, and managers on specific behavioural competencies. Useful because others' perceptions of your behaviour are often more accurate than self-assessments for interpersonal competencies.
Emotional Intelligence Assessments
Measure one or more dimensions of emotional intelligence, perceiving emotions, using emotions to facilitate thinking, understanding emotional dynamics, and managing one's own and others' emotions. The Mayer-Salovey-Caruso Emotional Intelligence Test (MSCEIT) uses an ability-based format with verifiable correct answers; many popular EI instruments use self-report questionnaires that measure personality traits more than EI per se. For a structured EI baseline, our free IQ test provides cognitive ability context alongside which to assess emotional and interpersonal capability.
Integrity and Reliability Tests
Overt integrity tests directly ask about attitudes toward theft, dishonesty, and related behaviours. Personality-based integrity tests measure conscientiousness, agreeableness, and emotional stability as proxies for integrity. Both have reasonable predictive validity for counterproductive work behaviour, though both are susceptible to candidate impression management.
Frequently Asked Questions
Can you prepare for psychometric tests?
For cognitive ability tests, practice consistently improves performance, partly through familiarity with format and partly through genuine skill development. Commercially available practice tests produce meaningful gains on numerical and verbal reasoning scores. For personality tests, deliberate faking is possible but risky: many modern instruments include consistency checks and social desirability scales that flag inconsistent responding.
Are psychometric tests legally used in hiring?
Yes, and they're often preferred over less structured methods precisely because they produce consistent, documented evidence that can withstand legal challenge. Employers using psychometric tests are required to demonstrate they're relevant to the role and don't create adverse impact on protected groups without justification. Cognitive ability tests have historically shown mean score differences between demographic groups, which creates legal and ethical considerations around their use.
How reliable are personality tests?
Well-constructed personality tests show strong test-retest reliability, the same person gets similar results on two occasions. Validity (whether they predict what they're meant to predict) varies: Big Five instruments have reasonable validity for many performance dimensions; instruments measuring narrower constructs have more variable validity evidence. MBTI has weaker test-retest reliability than Big Five instruments.
What should you do if you disagree with your results?
Consider whether the disagreement is with the test's accuracy or with what it says about you. Personality test results that surprise you are worth examining: sometimes they reflect how you behave rather than how you experience yourself. If the results are significantly inconsistent with how well-informed others perceive you, the test may have a validity issue, or the test-taking conditions may have introduced error.
How long do psychometric test results remain valid?
Cognitive ability scores are relatively stable in adulthood and test-specific scores (obtained through practice) stabilise after several practice sessions. Personality profiles are stable over years, there's little point retaking a Big Five instrument annually, as the results will be very similar. The exception: individuals going through major life transitions (significant therapy, career change, major life events) may show meaningful personality profile shifts over years.