Proceedings of the Annual Meeting of the Cognitive Science Society

The distinction between integral and separable dimensions isof central importance to understanding how humans integrateinformation from multiple stimulus sources. One approach tocharacterizing stimulus integrality is through a set of speededcategorization tasks most closely associated with the work ofWendell Garner. These tasks demonstrate that integral dimen-sions result in marked speed up or slow down in respondingwhen there is correlated or irrelevant variation, respectively,compared with a baseline task. Little, Wang & Nosofsky(2016) recently found that the slow down or interference canbe largely explained by a reduction in the number of direct rep-etitions in a modified Garner filtering task. In this paper, weexamine a large sample of subjects tested on either separable orintegral dimensions to determine the extent of and individualdifferences in the overall and sequential effects in the standardGarner tasks.