By whose standard? The affective implications of ethnic minorities' comparisons to ethnic minority and majority referents

In a 'diary' study, we examined the frequency and affective implications of 34 ethnic minority students' comparisons to other ethnic minorities or to members of a high-status ethnic majority (i.e., European-Americans). Participants made more frequent comparisons to ethnic majority than ethnic minority referents, although neither type of comparison tended to be perceived in terms of group membership (see also Smith & Leach, 2004). Comparisons to ethnic majority referents did not alter participants' positive affect even where they suggested poor future prospects in status-relevant domains. In contrast, comparisons to fellow ethnic minorities led to increased positive affect when they suggested a future prospect of improvement. We discuss the conceptual and practical implications of social comparison in the context of group status.     

An event-related visual occlusion method for examining anticipatory skill in natural interceptive tasks

This article describes a new automated method for the controlled occlusion of vision during natural tasks. The method permits the time course of the presence or absence of visual information to be linked to identifiable events within the task of interest. An example application is presented in which the method is used to examine the ability of cricket batsmen to pick up useful information from the prerelease movement patterns of the opposing bowler. Two key events, separated by a consistent within-action time lag, were identified in the cricket bowling action sequence—namely, the penultimate foot strike prior to ball release (Event 1), and the subsequent moment of ball release (Event 2). Force-plate registration of Event 1 was then used as a trigger to facilitate automated occlusion of vision using liquid crystal occlusion goggles at time points relative to Event 2. Validation demonstrated that, compared with existing approaches that are based on manual triggering, this method of occlusion permitted considerable gains in temporal precision and a reduction in the number of unusable trials. A more efficient and accurate protocol to examine anticipation is produced, while preserving the important natural coupling between perception and action.     

SANLab-CM: A tool for incorporating stochastic operations into activity network modeling

The Stochastic Activity Network Laboratory for Cognitive Modeling (SANLab-CM) is a new tool that incorporates stochastic operations into activity network modeling (Schweickert, Fisher, & Proctor, 2003). In this article, we discuss the core functionality of SANLab-CM and walk through a case study that expands a previously published single, static path model of telephone operators interacting with customers via a workstation (from Gray, John, & Atwood, 1993) into a stochastic model that generates 55 unique paths with different frequencies and a variety of qualitative properties. Without SANLab-CM, it would have been easy to mistake some of the more frequent critical paths as evidence for alternative strategies for task completion. With SANLab-CM, these critical paths can be shown to be simple emergent properties of variability in elementary cognitive, perceptual, and motor processes.