The experimenter's challenge : methods and issues in psychological research 2026-02-16T09:24:28+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Jung, John, 1937- (Macmillan ; Collier Macmillan, 1982)