Task: to inspect RTs in a more complex choice task, something that is not just a perceptual decision...a decision which involves two factors, which provide evidence that (we might assume) is represented at different stages Are reaction times affected additively by these two factors? Can existing single stage models account for the pattern of results?
Pieron's Law found for white light, pure tones, taste...(Luce, 1986)...and in simple choice decisions (Pins & Bonnet, 1996) “luminance processing and any further processing due to the specific requirements of the psychophysical task combine additively” Rumelhart, D., McClelland, J. & the PDP Research Group (Eds.), Parallel distributed processing: Explorations in the microstructure of cognition. Cambridge, MA: MIT Press. Luce, R. D. (1986). Response times: Their role in inferring elementary mental organization. Oxford University Press. Pins, D., & Bonnet, C. (1996). On the relation between stimulus intensity and processing time: Piéron's law and choice reaction time. Perception and Psychophysics, 58(3),
Stafford, T., Gurney, K.N. & Ingram, L. (2009). Piéron’s Law holds in conditions of response conflict. In N.A. Taatgen & H. van Rijn (Eds.), Proceedings of the 31th Annual Conference of the Cognitive Science Society. Cognitive Science Society. We thank Sarah Fox for help running the experiments, David Lawrence & David Yates for reading drafts and Marius Usher and Eddy Davelaar for useful discussion of the material. CogSci 2009, Amsterdam, 2 nd of August