Immediate Feedback Assessment Technique Promotes Learning and Corrects Inaccurate first Responses

The Psychological Record - Multiple-choice testing procedures that do not provide corrective feedback facilitate neither learning nor retention. In Studies 1 and 2, the performance of participants...     

Natural variation in Drosophila larval reward learning and memory due to a cGMP-dependent protein kinase

Animals must be able to find and evaluate food to ensure survival. The ability to associate a cue with the presence of food is advantageous because it allows an animal to quickly identify a situation associated with a good, bad, or even harmful food. Identifying genes underlying these natural learned responses is essential to understanding this ability. Here, we investigate whether natural variation in the foraging (for) gene in Drosophila melanogaster larvae is important in mediating associations between either an odor or a light stimulus and food reward. We found that for influences olfactory conditioning and that the mushroom bodies play a role in this for-mediated olfactory learning. Genotypes associated with high activity of the product of for, cGMP-dependent protein kinase (PKG), showed greater memory acquisition and retention compared with genotypes associated with low activity of PKG when trained with three conditioning trials. Interestingly, increasing the number of training trials resulted in decreased memory retention only in genotypes associated with high PKG activity. The difference in the dynamics of memory acquisition and retention between variants of for suggests that the ability to learn and retain an association may be linked to the foraging strategies of the two variants.     

Principles of cross-modal competition: Evidence from deficits of attention

How does the attentional system coordinate the processing of stimuli presented simultaneously to different sensory modalities? We investigated this question with individuals with neurological damage who suffered from deficits of attention. In these individuals, we examined how the processing of tactile stimuli is affected by the simultaneous presentation of visual or auditory stimuli. The investigation demonstrated that two stimuli from different modalities are in competition when attention is directed to the perceptual attributes of both, but not when attention is directed to the perceptual attributes of one and the semantic attributes of the other. These findings reveal a differentiated attentional system in which competition is modulated by the level of stimulus representation to which attention is directed.     

Drug treatment refusal,diagnosis, and length of hospitalization in involuntary psychiatric patients

A retrospective study of 664 involuntary psychotic inpatients who were discharged in a 27-month period indicated that 18% refused antipsychotic drug treatment. Statistical differences between refusers and consenters were found in diagnosis, length of hospitalization, and dosage of antipsychotic medications prescribed at the time of discharge. Compared with consenters, refusers were more often diagnosed as having bipolar or schizoaffective disorder while a majority of consenting patients were diagnosed as having schizophrenia. The variance in length of stay was explained by diagnosis alone. Refusers were receiving antipsychotic medication at discharge of one-half the average daily dosage of consenters. Both refusal status and diagnosis were found to contribute statistically to the variance in antipsychotic drug dosage.     

Physicalism, Nothing Buttery, and Supervenience

I consider the position (which I call'the triad') according to which physicalism is a reductive claim which is capturable in terms of the idea (the ' nothing buttery ' idea) that there is nothing but/nothing over and above the physical, an idea which, in its turn, is meant to be capturable in terms of a determinate form of supervenience . (Physicalism is then meant to be capturable in terms of the form of supervenience in question.) I argue that there is a tension in the triad. The notion of 'nothing buttery' required has features which can't be captured by the supervenience of the triad. Hence, one cannot have both physicalism as nothing-buttery-reductive and physicalism as supervenience of the kind in question. If one wants to hold onto the idea of physicalism as nothing-buttery-reductive, one must be prepared to identify physicalism with a much stronger claim than one might have originally thought, a claim that can't be captured by the supervenience of the triad.     

Experiential and Affective Correlates of Math Anxiety in Adult Women

Mathematics anxiety has been discussed as one of the factors contributing to poor mathematics performance, especially among women. Although many programs have been developed for its treatment, little research has been conducted concerning its correlates. The present study examines correlates of mathematics anxiety among the 69 female participants in a program designed to help individuals overcome their fears and become more competent in mathematics. Results indicate the following: (a) that mathematics anxiety in program participants is highly correlated with other academically relevant anxiety scales, (b) that test anxiety and self-estimated mathematics ability are the most important variables in the prediction of mathematics anxiety, and (c) that mathematics anxiety and high school mathematics preparation are the most important variables in the prediction of arithmetic performance.