| Abstract: | For a sample of 29 dealers, ratings on 15 aspects of service station management were reduced to a single over-all rating that was used as a criterion against which a personal history blank was item analyzed using a variant of double cross validation. The scoring key was then cross-validated on a new sample of 23 dealers. It was concluded that the unitary criterion was adequate to describe performance, and that 14 of the 39 items in the blank discriminated more successful dealers from less successful, retaining validity on cross-validation. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
