title: On testing the face validity of planning/problem-solving tasks in a normal population.
abstract: Clinically, tests of executive functions tend to be chosen on face validity. If such tests are to be used to evaluate a clinical population, their ability to measure executive functions should be reliably demonstrated in a normal population. In order to investigate the reliability of such tests, a sample of 130 normal adults (74 women, 56 men) ages 17 to 55 years were administered 4 tests purporting to measure planning/problem-solving: the Tower of London Test, the Six Element Test, the Twenty Questions Test, and the Rey Complex Figure Test. A structural equation modeling approach provided by the LISREL 8 program was used to evaluate three models hypothesized to explain the relationship among the test variables and the latent construct of planning/problem-solving. An adequate model was unable to be estimated, thus raising questions about the meaning of the latent construct planning/problem-solving and the psychometric structure of the Tower of London Test.
authors.affiliation: Department of Psychology, University of Newcastle, NSW, Australia.
authors.forename: K L
authors.initials: KL
authors.lastname: Kafer
authors.forename: M
authors.initials: M
authors.lastname: Hunter
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D008432:Mathematical Computing; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data*; D011340:Problem Solving; D011594:Psychometrics; D012016:Reference Values; D015203:Reproducibility of Results