Maximized split-half reliabilities and distributional characteristics for Harris-Lingoes subscales with few items: a reevaluation for the MMPI-2.
100 MMPI-2 protocols were obtained from the files of an outpatient clinic. Distributions of all possible split-half combinations were computed for selected Harris-Lingoes subscales with few items. As expected, max r reliability estimates were significantly greater than alpha estimates and distributions of correlations were negatively skewed. Inspection of the distributions suggested that the Amorality scale contains an ambiguous item which does not appear to belong in this grouping. Serious problems were noted with the Hy5 subscale. Alpha reliabilities were comparable to previously reported estimates, and max r reliability estimates closely resembled reported test-retest estimates.
Kelch
L W
LW
Forest Institute, Huntsville, AL.
Wagner
E E
EE
D005260:Female; D006801:Humans; D008950:MMPI; D008297:Male; D011594:Psychometrics; D015203:Reproducibility of Results