Evidence-based assessments for curious minds
CoreSkillAI was built on a simple idea: everyone deserves access to professional-grade cognitive and personality assessments — for free, with no strings attached.
We combine research from clinical psychology, cognitive science, and neuroscience into interactive tests that give you real, meaningful results instantly.
Percentile norms derived from published research involving hundreds of thousands of participants globally.
Each assessment is based on established psychological constructs: Big Five, EQ-i, Stroop Effect, Miller's Law.
We store nothing. Results are computed in your browser and never transmitted to any server.
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40 questions across number series (sequential reasoning), visual matrix patterns (spatial intelligence), and number analogies (relational thinking). Scored on standard IQ scale: mean 100, SD 15.
Based on simple visual reaction time research. Average adult response: 250–270ms. Distribution data from Jain et al. (2015) across 50,000+ participants.
Miller's (1956) foundational research: humans hold 7±2 items in working memory. The digit span subtest is part of clinical IQ assessments (WAIS, WISC).
Questions adapted from the IPIP Big-Five Factor Markers (Goldberg, 1992). The OCEAN model is the most replicated personality framework in psychology.
First described by J.R. Stroop (1935). The interference effect measures executive function and cognitive control — a reliable predictor of working memory capacity.