Details

Autor(en) / Beteiligte

• de Frias, Cindy M
• Dixon, Roger A
• Strauss, Esther
• Becker, James T

Titel

Structure of Four Executive Functioning Tests in Healthy Older Adults

Ist Teil von

• Neuropsychology, 2006-03, Vol.20 (2), p.206-214

Ort / Verlag

Washington, DC: American Psychological Association

Erscheinungsjahr

2006

Quelle

MEDLINE

Beschreibungen/Notizen

• The authors examined the factor structure of 4 indicators of executive functioning derived from 2 new (i.e., Hayling and Brixton) and 2 traditional (i.e., Stroop and Color Trails) tests. Data were from a cross-sectional sample of 55- to 85-year-old healthy adults ( N = 427) from the Victoria Longitudinal Study. Confirmatory factor analysis (LISREL 8.52) tested both a 2-factor model of Inhibition (Hayling, Stroop) and Shifting (Brixton, Color Trails) and a single-factor model. The 2-factor model did not fit the data because the covariance matrix of the factors was not positive definite. The single-factor model fit the data well, χ 2 (2, N = 427) = 0.32, p = .85, root-mean-square error of approximation (RMSEA) = .00, comparative fit index (CFI) = 1.00, goodness-of-fit index (GFI) = 1.00. Moreover, the single-factor structure of executive functioning was invariant (configural and metric) across gender, and invariant (configural with limited metric) across age. Structural relations showed that poorer executive functioning performance was related to older age and lower fluid intelligence, χ 2 (11, N = 418) = 23.04, p = .02, RMSEA = .05, CFI = .97, GFI = .98.