The validity of the mu index for differentiation of state and trait scales.
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.
Arrindell
W A
WA
Gerlsma
C
C
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