title: The validity of the mu index for differentiation of state and trait scales.
abstract: For 443 men and women of the general population and mean age of 45.8 yr. state and trait measures were obtained on two occasions, 6 mo. apart. Internal consistencies at each time were similar (.84-.95). Test-retest coefficients were lower for measures of state concepts than for trait concepts. Howarth's mu indices were higher for state concepts than for trait concepts.
authors: W A
authors: WA
authors: Arrindell
authors: C
authors: C
authors: Gerlsma
mesh_terms: D000328:Adult; D001007:Anxiety / Q000175:diagnosis*; D003863:Depression / Q000175:diagnosis*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010556:Personality Tests; D011594:Psychometrics; D015203:Reproducibility of Results