psychodiagnostics
/ˌsʌɪkəʊdʌɪəɡˈnɒstɪks/Psychology
noun
With singular concord. The branch of psychology concerned with psychological assessment (especially as carried out by means of Rorschach and other projective tests, personality profiles, etc.).
Origin
Early 20th century. From psycho- + diagnostics, apparently originally after French psycho-diagnostic; in specific sense after German Psychodiagnostik.