title: CLUSTER ANALYSIS OF PERSONAL ORIENTATION INVENTORY ITEMS IN A PRISON SAMPLE.
abstract: The responses of 500 male prisoners to the 150 items of the Personal Orientation Inventory (POI) were clustered, using elementary linkage analysis. Five major clusters accounted for 74 of the 150 items in the POI. K-R 20 reliabilities of these clusters compared quite favorably with those of the original scales, but scale scores could be predicted with only fair accuracy from cluster scores. The invariance of the present solution and the relative validity of cluster scores and scale scores remain to be determined.
authors.forename: A B
authors.initials: AB
authors.lastname: Silverstein
authors.forename: G
authors.initials: G
authors.lastname: Fisher