Ensemble statistics of a display influence the representation of items in visual working memory

Importantly, this type of systematic variation also provides the necessary conditions for assessing the presence of a mixture distribution, allowing the opportunity to test whether or not the two-process model of attention allocation applies to instances of attentional capture. A mixture analysis applied to the results of the second experiment found that the obtainedvariance for the intermediate distributionswas significantly less than that predicted by a mixture of capture and no capture trials, disconfirming a two-process model.