Environmental determinants of memory improvement in late adulthood

Two studies were conducted with nursing home residents to determine whether memory could be improved. This was accomplished by increasing the cognitive demand of the environment and then varying the extent to which residents were motivated to attend to and remember these environmental factors. In Study 1, motivation to practice recommended cognitive activities was manipulated by varying the degree of reciprocal self-disclosure offered by interviewers in a series of dyadic interactions. In Study 2, motivation to practice recommended cognitive activities was manipulated by varying whether positive outcomes were contingent on attending to and remembering these activities, which increased in demand over time. Whether as a function of interpersonal (Study 1) or practical (Study 2) incentives, engaging in cognitive activity resulted in improvement on standard short-term memory tests, including probe recall and pattern recall, as well as in improvement on nurses' ratings of alertness, mental activity, and social adjustment for experimental groups relative to controls.     

Memory for where, but not what, is used during visual search

Although the role of memory in visual search is debatable, most researchers agree with a limited-capacity model of memory in visual search. The authors demonstrate the role of memory by replicating previous findings showing that visual search is biased away from old items (previously examined items) and toward new items (nonexamined items). Furthermore, the authors examined the type of memory representations used to bias search by changing an item's individuating feature or location during search. Changing the individuating feature of an item did not disrupt normal search biases. However, when the location of an item changed, normal search biases were disrupted. These results suggest that memory used in visual search is based on items' locations rather than their identity.     

When does the daily hazard rate for committing suicide stabilize in psychiatric outpatients?

To ascertain whether the daily hazard risk rate for committing suicide by psychiatric outpatients stabilizes over time, a parametric survival analysis was calculated for the 6891 outpatients who were followed by Brown, Beck, Steer, and Grisham. Approximately 3 1/4 years after a patient's initial evaluation, the daily hazard rate leveled off and dropped below the hazard rate that would occur if a constant (exponential) daily hazard rate were assumed. The cost-effectiveness of conducting follow-up studies to identify suicidal risk factors in psychiatric outpatients beyond three years was questioned.     

When the heat is on: romantic partner responses influence distress in socially anxious women

This study provided a preliminary test of whether socially anxious women and their partners would show more negative social support behavior, especially among those with low relationship satisfaction, and whether this would increase the distress of the socially anxious women. Women with (n=22) and without (n=23) heightened social anxiety were observed interacting with their partners under a social-evaluative threat and support behaviors were coded. Unexpectedly, no differences were found between socially and non-socially anxious women and their partners. Although relationship satisfaction influenced this process, it was the more satisfied women who showed more negative behavior. Additionally, the more positive behaviors the partner exhibited, the greater was the distress reported by socially anxious women, particularly among women whose partners reported high relationship satisfaction. Implications for how these findings might expand theories on interpersonal processes in social anxiety are discussed.     

Psychosocial correlates of dating violence victimization among Latino youth

To examine the association between physical dating violence victimization and risk and protective factors, an anonymous, cross-sectional, self-reported survey was administered to Latino youth (n=446) residing in suburban Washington, DC. Multivariate logistic regression models were constructed, and adjusted OR and 95% CI were examined. Approximately 9% of Latino adolescents reported physical dating violence victimization. Overall, youth who reported carrying a gun, involvement in physical fights and suicidal thoughts were at greater odds of reporting dating violence. Among females, fighting was the sole risk behavior associated with dating violence. Girls who reported a stronger sense of self were less likely to report dating violence. Among males, gun carrying, but not physical fighting, and having considered suicide were associated with dating violence. Spending time each week with a mentor was also positively associated with male dating violence victimization. Dating violence appeared to cluster with other risk behavior engagement. Important gender differences in associated risk and protective behaviors were identified and should be incorporated into primary and secondary prevention activities.     

Effect of orientation and of shape similarity on perceptual grouping

A method in which as were asked to partition a pattern into two regions was used to investigate the perceptual grouping produced by changes in the orientation and shape of two-line figures. The results show that the judged similarity of the figures fails to predict the degree to which the figures form distinct perceptual groups. Grouping was most strongly influenced by differences in the orientation of the lines composing the figures. Crossing of lines making up the figures also affected grouping, but was less decisive than line orientation.     

Effect of orientation and of shape similarity on perceptual grouping

A method in which Os were asked to partition a pattern into two regions was used to investigate the perceptual grouping produced by changes in the orientation and shape of two-line figures. The results show that the judged similarity of the figures fails to predict the degree to which the figures form distinct perceptual groups. Grouping was most strongly influenced by differences in the orientation of the lines composing the figures. Crossing of lines making up the figures also affected grouping, but was less decisive than line orientation.