SMABS 2004 Jena University
SMABS 2004 Home Organization About Jena Sponsors Links Contact SMABS Home

European Association of Methodology

Department of methodology and evaluation research

Jena University


© Webmaster

Contributions: Abstract

Avoiding problematic confounding of concentration performance with externally introduced noise by the use of the Frankfurt Adaptive Concentration Test (FACT)

Tim Loßnitzer
Friedrich-Schiller-Universit├Ąt Jena
Germany
Andreas Frey
Humboldt-Universit├Ąt zu Berlin
Germany

Earlier studies have shown that the problematic confounding of concentration performance with other variables can be controlled by using the adaptive test versions of the Frankfurter Adaptive Concentration Test (FACT, Moosbrugger & Heyden, 1997), thereby increasing discriminant validity. Two related studies have demonstrated this for the confounding of concentration performance with activation (Frey & Moosbrugger, in press) and with negative affectivity (Loßnitzer, 2003).

Confounding effects can be explained with an attention-focusing hypothesis. The present study investigates whether such a hypothesis can be experimentally verified. The effect of experimentally manipulated noise (silence vs. noise) on the concentration performance measured with two test versions of the FACT (adaptive FACT-S vs. non-adaptive FACT-SR) was examined. It is assumed that only the concentration performance measured with the non-adaptive test version will be affected under the noise condition.

Preliminary results can be reported for a sample of N = 104. Subjects were assigned randomly to one of four test-conditions given by the combination of the two experimental factors noise and test version. An ANOVA showed a trend towards the assumed interaction noise × test version (h2 = .032, p = .071). Conditionally the problematic confounding of concentration performance with noise can be controlled if the adaptive test version FACT-S is used. The study is still in progress, final results will be reported at the meeting.