Psychological Tests is a free online resource focused on psychology, with a particular emphasis on self-administered tests and testing methods. Visitors can take tests without charge or registration, covering areas such as personality, emotions, relationships, communication, stress, empathy, anxiety, and intelligence. The site also offers quizzes about habits and preferences, including whether someone is an introvert or extrovert, an owl or lark, or an optimist or pessimist.

A substantial section addresses fears and phobias, with tests concerning topics such as heights, spiders, enclosed spaces, social situations, and flying. Tests are organized into categories for students, schoolchildren, girls, and broader areas of psychology, helping users browse by interest. The project was created to support anonymous online testing and increase participation, including for people interested in a particular subject.

Psychologists and other contributors can submit testing methods for review; submissions are expected to include a title, description, questions, detailed results, and a way to calculate outcomes. The site also welcomes feedback and suggestions for improving the project