Parasite stress, ethnocentrism, and life history strategy

Fincher & Thornhill (F&T) present a compelling argument that parasite stress underlies certain cultural practices promoting assortative sociality. However, we suggest that the theoretical framework proposed is limited in several ways, and that life history theory provides a more explanatory and inclusive framework, making more specific predictions about the trade-offs faced by organisms in the allocation of bioenergetic and material resources.     

Agreement Between Descriptive and Experimental Analyses of Behavior under Naturalistic Test Conditions

We compared the results of a contingency space analysis (CSA) of behavior-consequence recordings to the results of functional analysis (FA) test conditions involving antecedent stimuli and verbal statements that both differed from and mimicked those in the natural environment. Three preschool children with autism spectrum disorder participated. During Phase I, we identified teacher-delivered consequences that were contingent on problem behavior from observational data. During Phase II, each child participated in FA test conditions conducted by their teacher or a same-sex experimenter in an ABA reversal design. Two Experimenter FA conditions were identical to the Teacher FA, with an additional condition involving a different task, demands, and verbal statements. Teacher FAs revealed a clear function for problem behavior for two children, whereas the Experimenter FA was undifferentiated. The reverse pattern was observed for the third child. Results of the CSAs were consistent with the Teacher FAs for two children. Implications for generalizing the outcomes of analog FA test conditions are discussed.     

Meditation and the scope of mental action

While philosophers of mind have devoted abundant time and attention to questions of content and consciousness, philosophical questions about the nature and scope of mental action have been relatively neglected. Galen Strawson’s account of mental action, the most well developed extant account, holds that cognitive mental action consists in triggering the delivery of content to one’s field of consciousness. However, Strawson fails to recognize several distinct types of mental action that might not reduce to triggering content delivery. In this article, we argue that meditation provides a useful model for understanding a wider range of types of mental action than heretofore recognized. Conclusions yielded by two distinct bodies of current psychological research on meditation and cognition, and meditation and introspection, buttress meditation’s suitability for this role.     

INCREASING TREATMENT ACCEPTABILITY THROUGH VIDEO

The effects of a video vignette on the treatment acceptability ratings of four behavioral interventions were evaluated. Two interventions involved positive reinforcement (DRO and DRI) and two negative consequences (contingent physical restraint and contingent electric shock). Seventy-four undergraduate psychology students were randomly assigned into two groups. The experimental group (n=36) viewed a video vignette of a self-abusive individual whereas the control group (n=38) did not. Acceptability ratings prior to the video showed no differences between the experimental and control groups. The post video ratings indicated significant acceptability increases for physical restraint for the experimental group. There also was a significant group by testing effect because the means for the experimental group rose whereas the control group's means were stable. These results replicated and extended Foxx, McHenry and Bremer (in press) who showed that treatment acceptability is alterable through video.     

Jump start exit criterion: Exploring a new model of service delivery for the treatment of childhood feeding problems

While the literature on the assessment and treatment of childhood feeding disorders continues to grow, little research has focused on developing new forms of service delivery. This study demonstrates the effectiveness of a brief, intensive intervention for the treatment of food selectivity in three boys who had failed to progress in traditional outpatient treatment. The implications of this model of service delivery are discussed. Copyright © 2009 John Wiley & Sons, Ltd.     

Visual and verbal working memory loads interfere with scene-viewing

Working memory is thought to be divided into distinct visual and verbal subsystems. Studies of visual working memory frequently use verbal working memory tasks as control conditions and/or use articulatory suppression to ensure that visual load is not transferred to verbal working memory. Using these verbal tasks relies on the assumption that the verbal working memory load will not interfere with the same processes as visual working memory. In the present study, participants maintained a visual or verbal working memory load as they simultaneously viewed scenes while their eye movements were recorded. Because eye movements and visual working memory are closely linked, we anticipated the visual load would interfere with scene-viewing (and vice versa), while the verbal load would not. Surprisingly, both visual and verbal memory loads interfered with scene-viewing behavior, while eye movements during scene-viewing did not significantly interfere with performance on either memory task. These results suggest that a verbal working memory load can interfere with eye movements in a visual task.