title: Self-actualization and the act of volunteering: further evidence for the construct validity of the personal orientation inventory.
mesh_terms: D005086:Existentialism; D005260:Female; D006040:Goals; D006379:Helping Behavior; D006801:Humans; D007206:Individuality; D008297:Male; D010551:Personality; D010555:Personality Inventory; D012649:Self Concept; D012919:Social Behavior; D013998:Time Perception