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.