Comparing Proctored and Unproctored Cognitive Ability Testing in High-Stakes Personnel Selection

New advances in computerized adaptive testing (CAT) have increased the feasibility of high-stakes unproctored testing of general mental ability (GMA) in personnel selection contexts. This study presents the results from a within-subject investigation of the convergent validity of unproctored tests. Three batteries of cognitive ability tests were administered during personnel selection in the Norwegian Armed Forces. A total of 537 candidates completed two sets of proctored fixed-length GMA tests before and during the selection process. In addition, an at-home unproctored CAT battery of tests was administered before the selection process began. Differences and similarities between the convergent validity of the tests were evaluated. The convergent validity coefficients did not significantly differ between proctored and unproctored batteries, both on observed GMA scores and the latent factor level. The distribution and standardized residuals of test scores comparing proctored-proctored and proctored-unproctored were overall quite similar and showed no evidence of score inflation or deflation in the unproctored tests. The similarities between proctored and unproctored results also extended to the moderately searchable words similarity test. Although some unlikely individual cases were observed, the overall results suggest that the unproctored tests maintained their convergent validity.