About

Our Purpose

This site provides compatibility analysis grounded in scientific psychological research and statistical data. Rather than relying on intuition or fortune-telling, we base our assessments on evidence from peer-reviewed academic papers.

Why the Big Five?

The Big Five (Five-Factor Model) is the most widely validated and replicated personality model in modern personality psychology. Its consistent structure has been confirmed across cultures and languages, and it has been used in thousands of studies.

Unlike other personality assessments (blood type, horoscopes, etc.), the Big Five was derived through scientific factor analysis and its predictive validity has been repeatedly demonstrated.

Privacy Commitment

All diagnostic processing on this site is completed entirely in your browser, and running the assessment sends none of your input to our servers. Your input is stored only in your browser (on your device) so you do not have to re-enter it on a return visit, and it can be deleted at any time with the Reset button on the form. If you create a share link for your result, the result data is included in the link URL.

Disclaimer

The results of this analysis are reference information based on psychological research findings. They do not guarantee the success or failure of any individual relationship. Relationships are determined by many factors beyond personality traits, including communication, values, environment, and effort.

Operator

This site is personally operated by いつつぼし (Itsutsuboshi). For feedback or requests, please use the contact page.