Additive factors analysis of reaction time with alphanumericals and line orientations as stimuli |
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Authors: | Sanders A F Klompenhouwer F M |
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Affiliation: | Department of Psychology, Free University, Amsterdam, The Netherlands. |
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Abstract: | Most additive factors method (AFM) analyses of choice reaction time (CRT) have used alphanumerics whereas tests of single process models have often used line length or line orientation. The suggestion is raised that commonly observed additive effects of variables on CRT might not apply to stimuli of the latter category. This would mean a severe limitation of the AFM in that the stage structure of choice reactions would be stimulus specific. The issue is addressed in two experiments. The first showed additive effects of stimulus quality and stimulus-response compatiblility for both alphanumerics and line orientations as stimuli. The second showed that for both stimulus categories the effect of stimulus quality was fully reflected in visual fixation time. Together the results argue against a single central process and favour a stage model of CRT. |
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Keywords: | 2340 |
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