Crying for a Vision: The Native American Sweat Lodge Ceremony as Therapeutic Intervention

The Native American sweat lodge ceremony or sweat therapy is being used increasingly in various medical, mental health, correctional, and substance abuse treatment centers serving both Native and non‐Native clients. This article explores the sweat lodge ceremony's background, elements of Native American spirituality, origin story, cultural symbolism, prayer, and contemporary use. Current evidence of effectiveness and therapeutic benefits is presented, then implications for integrating the sweat lodge ceremony as a complementary counseling approach are discussed.     

Is the Triple P-Positive Parenting Program Acceptable to Parents from Culturally Diverse Backgrounds?

Behavioural parenting programs are an effective intervention for behavioural and emotional problems in children, however these programs have low utilisation rates by culturally diverse parents. We examined the cultural acceptability of program materials, preferences for delivery methods, and barriers to use of the Triple P-Positive Parenting Program. One hundred and thirty seven parents watched a video outlining the 17 strategies in Triple P and read through a tip sheet before completing a series of questionnaires. Results revealed that parents found the strategies highly acceptable, highly useful, were very likely to use the strategies and reported currently using the strategies often. They also rated the program materials as very culturally appropriate and identified group, seminar, television, and individual as the most preferred delivery methods. Parents identified location and timing of services, financial cost, and competing work commitments as the most frequently cited barriers to accessing a parenting intervention. The findings of this study suggest that elements of parenting programs may not be contributing to the low rates of access among culturally diverse parents. These findings highlight the need for more research addressing variables that may contribute to increasing culturally diverse parents’ access of behavioural parenting programs.     

The binding pool: A model of shared neural resources for distinct items in visual working memory

Visual working memory (VWM) refers to the ability to encode, store, and retrieve visual information. The two prevailing theories that describe VWM assume that information is stored either in discrete slots or within a shared pool of resources. However, there is not yet a good understanding of the neural mechanisms that would underlie such theories. To address this gap, we provide a computationally realized neural account that uses a pool of shared neurons to store information about one or more distinct stimuli. The binding pool model is a neural network that is essentially a hybrid of the slot and resource theories. It describes how information can be stored and retrieved from a pool of shared resources using a type/token architecture (Bowman & Wyble in Psychological Review 114(1), 38–70, 2007; Kanwisher in Cognition 27, 117–143, 1987; Mozer in Journal of Experimental Psychology: Human Perception and Performance 15(2), 287–303, 1989). The model can store multiple distinct objects, each containing binding links to one or more features. The binding links are stored in a pool of shared resources and, thus, produce mutual interference as memory load increases. Given a cue, the model retrieves a specific object and then reconstructs other features bound to that object, along with a confidence metric. The model can simulate data from continuous report and change detection paradigms and generates testable predictions about the interaction of report accuracy, confidence, and stimulus similarity. The testing of such predictions will help to identify the boundaries of shared resource theories, thereby providing insight into the roles of ensembles and context in explaining our ability to remember visual information.     

Body position differentially influences responses to exogenous and endogenous cues

The influence of vestibular inputs on exogenous (Exp. 1) and endogenous (Exp. 2) orienting of visual attention was examined. The vestibular system was manipulated through a change in static body position. Participants engaged in an exogenous or endogenous response task while in a seated position, while lying in a prone position, and while in a prone position with their head down and neck flexed (HDNF). An attenuation of inhibition and facilitation effects during the exogenous task was observed in the HDNF position. However, responses to the cues remained similar in the endogenous task, irrespective of body position. The results reveal a potential dissociation between reflexive and volitional orienting of visual attention that is dependent on vestibular inputs.     

Preservation of categorical knowledge in Alzheimer's disease: A computational account

Abstract

The distinction between knowledge of specific exemplars and knowledge of their general categories is central to much theorising on the nature of semantic memory. The dissociation between exemplar and category knowledge observed in Alzheimer's Disease (AD) would appear to support this distinction, and to suggest that different neural systems are involved in the representation of exemplar and category knowledge. We review the evidence for preserved category knowledge in the semantic memory impairment of AD, and propose an alternative interpretation, according to which category and exemplar knowledge are both represented in the same distributed neural substrate. The relative preservation of category knowledge is a consequence of the greater frequency, and hence greater robustness, of the representation of attributes shared by all or most members of a category, compared to exemplar-unique attributes. We test and confirm the computational adequacy of this hypothesis in two computer simulations.     

Inhibition of return in visual marking? The importance of the interstimulus interval and the type of search task

Four experiments are presented that examine the possibility that inhibition of return (IOR) may occur in visual marking. Previously, Watson and Humphreys (1997), using a cue duration of 750 ms and an interstimulus interval (ISI) of 250 ms, concluded that IOR was not present in visual marking. In the present study, the first experiment examined three ISIs (250 ms, 500 ms, and 750 ms) with a constant stimulus onset asynchrony (SOA, 1000 ms) in a typical cueing paradigm and failed to find IOR with the short ISI. Based on these findings, the second (feature search) and third (conjunction search) experiments tested for IOR by using a visual marking paradigm with a 500 ms ISI. Evidence for IOR was found in the feature search (preview condition similar to half-elements baseline condition) and not in the conjunction search (preview condition similar to the all-elements baseline). The typical preview effect was found in Experiment 4 with a cue duration 1000 ms and no ISI. Overall, these findings indicate that IOR may play a role in visual marking, but only with feature search tasks and long ISIs between displays.