About TrainThinking

TrainThinking is a free, ad-supported library for building stronger reasoning skills. We make a critical thinking test, hands-on exercises with worked solutions, and practical improvement guides — all usable in the browser without an account.

Our approach

Our materials draw on established frameworks for evaluating reasoning, including the five-skill structure used by appraisals such as Watson–Glaser (inference, recognition of assumptions, deduction, interpretation and evaluation of arguments) and the Paul–Elder model of critical thinking. Every question and exercise comes with an explanation, because skills improve fastest when you find out not just whether you were right but why.

What this site is — and isn't

Everything here is for education and self-reflection. Our test is a practice and learning tool, not a clinical, diagnostic, or employment-screening instrument, and a result is an estimate of skill on these questions rather than an IQ or a professional certification.

Written and maintained by The TrainThinking Team — Educators & reasoning-assessment specialists.