THIS SERIES OF STUDIES INVESTIGATED THE RELATIONSHIP BETWEEN PERSONALITY ORGANIZATION AND COGNITIVE FUNCTIONING. PART I PRESENTS RESEARCH REPORTS EXAMINING THE RELATIONSHIP BETWEEN EFFICIENCY ON TWO COMPLEX COGNITIVE PERCEPTUAL TASKS AND SEVERAL PERSONALITY DIMENSIONS. IT WAS CONCLUDED THAT COGNITIVE-PERCEPTUAL EFFICIENCY CAN BE RELATED TO IMPORTANT PERSONALITY VARIABLES. PART II CONSISTS OF STUDIES ON THE RELATIONSHIP BETWEEN PERSONALITY VARIABLES AND COGNITIVE FUNCTIONS ASSESSED BY SEVERAL SUBTESTS OF THE WECHSLER ADULT INTELLIGENCE SCALE. THREE STUDIES INVESTIGATE TEMPORAL CONCEPT. THE OBJECT ASSEMBLY SUBTEST IS SUSCEPTIBLE TO INTERFERENCE. THE RELATIONSHIP BETWEEN THE INFORMATION AND COMPREHENSION SUBTESTS AND SEXUAL IDENTITY IS EXPLORED, AS IS THE RELATIONSHIP BETWEEN ENERGY DEPLOYMENT AND ACHIEVEMENT. NEGATIVISM AS MEASURED BY THE RORSCHACH IS CORRELATED WITH VARIOUS TYPES OF SUCCESS ON THE DIGIT SPAN SUBTEST. FAILURE IMPROVES PERFORMANCE ON DIGIT SPAN AND DIGIT SYMBOL SUBTESTS. A STUDY ON ANXIETY INDICATES THAT THIS FACTOR REDUCES RESPONSES TO PERIPHERAL STIMULI. (PR)