Coactivation in the perception of redundant targets

Reaction time (RT) to redundant stimuli was investigated while controlling for distraction effects and response competition. In Experiment 1, a redundancy gain was found for 2 target letters with identical features (redundant) compared to trials in which 2 different targets shared the same response assignment (compatible) indicating coactivation of stimulus inputs. No difference in RTs was found between compatible displays and displays containing 2 targets with different responses (incompatible), suggesting (with other evidence) that letters were serially processed. In Experiment 2, a redundancy gain was again found. Unlike in Experiment 1, incompatible displays produced response competition, indicating a redundancy gain with parallel processing. Three forms of redundancy gains operating under specific conditions are discussed.     

Attentional distribution in visual space

Summary The horizontal extent of the visual attentive field was measured by the use of a two-choice-RT task and compatible and incompatible distractors. The target was a line that inclined either to the left or to the right. Whether or not the subject performed the choice RT was made contingent upon whether two other stimuli presented in the visual display matched or mismatched. The match-mismatch stimuli varied in locations so as to manipulate the relevant visual area (the attended area). The locations of the distractors were also varied. The increase in RT associated with incompatible distractors was found to vary inversely with their distance from the edge of the area attended to and independently of their distance from the target lines. The results were interpreted in terms of an inhibitory field that surrounds the area attended to.     

Shifting of attentional focus within and about a visual display

If several positions must be attended in a large visual display, does the efficiency of performance vary as a function of the display distance between these to-be-attended positions? Two previous experiments (Podgorny & Shepard, 1983; Shaw, 1978) gave conflicting answers. In the present experiments, eight-letter circular displays were briefly presented. On each trial one, two, or three positions of the display were cued or precued. The number of noncued display positions intervening between the cued locations varied from zero to three. The subjects' task was to rapidly discriminate between two target letters. Although reaction time was found to increase with increases in the number of cued locations, no significant or suggestive effects were found for the spacing or distance between the cued locations. The evidence strongly suggests that the subjects serially searched the cued locations, which further implies that attention can index locations in the visual field at a speed that is independent of the distance between these locations.     

Ethical Dimensions of Diagnosing: Considerations for Clinical Mental Health Counselors

There are numerous ethical considerations inherent within the process of assigning a Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.; DSM‐IV‐TR; American Psychiatric Association, 2000) diagnosis. In this article, general ethics considerations such as informed consent and confidentiality, accuracy of diagnosis, and multiple relationships are examined as they relate to clinical mental health counselors' use of the DSM‐IV‐TR. The article concludes with the authors' suggestions for ethically sensitive diagnostic practices.     

Gender and Diagnosis: Struggles and Suggestions for Counselors

Concerns have been raised related to the intersection of gender and diagnosis, particularly with respect to biases in diagnoses made according to the Diagnostic and Statistical Manual of Mental Disorders (4th ed., text rev.; American Psychiatric Association, 2000). The authors review the literature on the prevalence of diagnoses by gender, sex bias in diagnosis, the problematic impact of particular diagnoses on women, and the relationship of diagnosis to socialization and social conditions. Alternative diagnoses, diagnostic procedures, and diagnostic foci that can help counselors to most effectively avoid gender bias are offered.     

Family Disruption and Social,Emotional and Behavioral Functioning in Middle Childhood

The association between family disruption and child socio-emotional and behavioral development is a relatively well-examined but as yet unresolved issue, and the conclusions of previous research have been ambiguous. Further, some studies have indicated that associations may depend on other risk factors, yet the question of heterogeneity has been relatively little discussed. The purpose of this cross-sectional study was to assess associations between family disruption on the one hand and teacher-rated and self-reported outcomes on subscales from the Behavior Assessment System for Children, 2nd edition (BASC-2) and the Behavior and Emotional Screening System (BESS) on the other, among a Danish sample of 817 normally developing schoolchildren. Specifically, we assessed (a) the extent to which background factors explained unadjusted associations and (b) whether associations were heterogeneous across the distribution of outcome measures. Results from ordinary least squares (OLS) models showed that relative to children from intact families, children from disrupted families had higher problem scores on BASC-2 subscales Externalizing Problems, Study Skills and School Problems even after controlling for a wide range of background factors. Quantile regression (QR) models showed that associations with Externalizing Problems and Study Skills were stronger among children with higher problem scores. Certain behavioral problems may therefore indicate increased vulnerability towards adverse events, such as family disruption. General screening for such problems could provide an opportunity to identify children in need of special attention and support against the potentially negative outcomes of family disruption for their school experience.