title: Assessing personality traits of individuals with mental retardation.
abstract: Psychometric properties for a new instrument, the EZ-Personality Questionnaire designed to assess the functioning of students with cultural-familial mental retardation, are presented. The analysis of data from 661 participants yielded a 37-item, seven-scale instrument that confirmed the five hypothesized factors of Positive Reaction Tendency, Negative Reaction Tendency, Effectance Motivation, Expectancy of Success, and Outerdirectedness and identified two additional factors of Curiosity/Creativity and Obedience. Separate studies were conducted to establish the concurrent and construct validity of the instrument. Reliability was examined through split-half and test-retest analyses. All psychometric indices were within acceptable levels, resulting in an instrument with potential applications in research, education, and clinical settings.
authors.affiliation: Department of Psychology, Yale University, New Haven, CT 06520, USA. edward.zigler@yale.edu
authors.forename: Edward
authors.initials: E
authors.lastname: Zigler
authors.forename: Dianne
authors.initials: D
authors.lastname: Bennett-Gates
authors.forename: Robert
authors.initials: R
authors.lastname: Hodapp
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Henrich
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D010551:Personality; D010555:Personality Inventory; D011594:Psychometrics; D011897:Random Allocation; D015203:Reproducibility of Results