Do overall dimension ratings from assessment centres show external construct-related validity?

ABSTRACT

There have been repeated calls for an external construct validation approach to advance our understanding of the construct-related validity of assessment centre dimension ratings beyond existing internal construct-related validity findings. Following an external construct validation approach, we examined whether linking assessment centre overall dimension ratings to ratings of the same dimensions that stem from sources external to the assessment centre provides evidence for construct-related validity of assessment centre ratings. We used data from one laboratory assessment centre sample and two field samples. External ratings of the same dimensions stemmed from assessees, assessees’ supervisors, and customers. Results converged across all three samples and showed that different dimension-same source correlations within the assessment centres were larger than same dimension-different source correlations. Moreover, confirmatory factor analyses revealed source factors but no dimension factors in the latent factor structure of overall dimension ratings from the assessment centre and from external sources. Hence, consistent results across the three samples provide no support that assessment centre overall dimension ratings and ratings of the same dimensions from other sources can be attributed to dimension factors. This questions arguments that assessment centre overall dimension ratings should have construct-related validity.     

The capacity for selective concentration on color versus form of consonants

The concept of active exclusion or inhibition of some stimuli while focusing on others has been largely ignored or rejected in recent work in the field of attention. As part of an ongoing series of studies involving five posthypnotically cued levels of mental concentration, it was possible to test the capacity for active blurring of one stimulus attribute (form) while simultaneously perceiving another attribute (color) accurately. In lowered concentration conditions three highly trained hypnotic Ss were dramatically successful in blurring the form and thereby impairing identification of colored consonants flashed tachistoscopically at speeds ranging from 300 msec down to 50 msec—without any concomitant loss in accuracy of identification of the color in which the letter was printed. Among a supplemental series of control experiments, it was further demonstrated that the active inhibitory process can be reversed so as to act upon color but not form; and that the Ss were unable to duplicate these feats in the waking state without benefit of posthypnotic programming. A theoretical interpretation of the findings, in terms of a conceptual model of the mind, is offered.     

The effect of semantic priming on the detection of letters within words

Memory & Cognition - Smith (1979) reported an experiment in which subjects were to detect whether or not a displayed word contained a particular target letter. Her data indicated that if the...