Interactive psychology experiment from the University of Cambridge, examining people's perceptions of their risks of developing health problems.

Mountain Shadows Phonemic Awareness Scale (MS-PAS) and selection of Macintosh and Windows statistical analysis software, including parallel analysis.

Web Experiments for Psychologists - Creates and hosts web experiments for psychologists who are conducting psychological research or are teaching psychology.

Color Me On is a corporation focused on bringing color personality assessments and related training to corporations and individuals for better understanding, compatibility and performance.

21st Century Assessment - developers of the PACL, the fast personality assessment instrument

Provides information on psychological testing and assessment, acquiring psychological tests, and ordering the Standards for Educational and Psychological Testing guide. Also provides links to the JCTP website and Testing Governance in APA.

online psychology experiment involving alien mind reading testing causal learning and inference.

A pioneer and leader in online testing, Queendom offers professional quality psychological tests, assessments and quizzes, giving readers the opportunity to look into their own personality, relationships, intelligence and health. Queendom has served more than 300 million tests in nine different languages to help you grow, jump-start your career and improve your relationships. But we do not stop there. We offer advice, community, surveys and trivia quizzes on every subject imaginable - all ways to learn and explore what it means to be human.

Catalog of professional tests: MBTI, Strong, CPI and Davies-Black Publishing tools, and other leading information resource for psychological type, career interests, employee selection, and organizational change.

Online textbook by political scientist RJ Rummel.