Conceptualizing the Influence of Social Agents of Behavior Change: A Meta-Analysis of the Effectiveness of HIV-Prevention Interventionists for Different Groups

A meta-analysis of 166 HIV-prevention interventions tested theoretical predictions about the effects of experts, lay community members, and similar and dissimilar others, as agents of change. In general, expert interventionists produced greater behavior change than lay community members, and the demographic and behavioral similarity between the interventionist and the recipients facilitated behavioral change. Equally importantly, there were differences across groups in the efficacy of various sources, especially among populations of low status and/or power. These findings support the hypothesis that unempowered populations are more sensitive to characteristics of the interventionists who can facilitate access to various resources. In addition, they suggest the need to ensure the availability of health professionals from diverse demographic and behavioral backgrounds.     

Sibling dynamics and group psychotherapy

The role of sibling dynamics in group psychotherapy has received relatively little attention in the literature. Our clinical experience suggests that sibling issues regularly arise in the practice of group psychotherapy. This article provides an integrative view of sibling relationships from a family systems and self psychology orientation to group therapy. Special emphasis is placed on developmental and cultural differences as they affect sibling dynamics and the group leader's role. A number of case examples are offered to illustrate ways to view clinical challenges in a manner consistent with the influence of sibling relationships on group members and group process.     

Temporal variations in visual completion: a reflection of spatial limits?

The completion of partly occluded objects appears instantaneous and effortless, but empirically takes measurable time. The current study investigates how amount of occlusion affects the time course and mechanisms of visual completion. Experiment 1 used a primed-matching paradigm to determine completion times for objects occluded by various amounts. Experiments 2 and 3 used a dot-localization paradigm to probe completed contour representations for a qualitative shift above some spatial limit. The results demonstrate that time to completion rises with amount of occlusion. Nonetheless, the visual system can complete highly occluded objects, even when the occlusion renders visible contours nonrelatable. Furthermore, prolonged completion times for highly occluded objects do not result from a breakdown of low-level interpolation processes: The same contour completion mechanism operates on objects occluded by different spatial extents.     

Social achievement goals: the nature and consequences of different orientations toward social competence

The proposition that achievement goals are applicable to the social domain was examined in four studies. Study 1 established that different orientations toward developing or demonstrating social competence can be seen in individuals' responses to open-ended questions about their social goals and social competence. Studies 2 through 4 evaluated a new survey measure of social achievement goals. Exploratory and confirmatory factor analyses confirmed the hypothesized model of social achievement goals. Convergent and discriminant validity for the new measure of social achievement goals was established. In line with hypotheses, a social development goal was associated with adjustment and a social demonstration-avoid goal was associated with maladjustment both concurrently and longitudinally. A social development goal also was positively related to instructor ratings of students' social adjustment in small classroom settings. A social demonstration-approach goal was most often unrelated to adjustment. The importance of social achievement goals for a comprehensive understanding of social motivation and adjustment is discussed.     

Labeling guides object individuation in 12-month-old infants

A new manual search method was used to investigate the impact of naming on object individuation in 12-month-old infants. In Experiment 1, on a two-word trial, an experimenter looked into a box while the infant was watching and provided two labels (e.g., "Look, a fep!" and "Look, a wug!"). On a one-word trial, the experimenter instead repeated the same label (e.g., "Look, a zav!"). After the infant retrieved one object from the box, subsequent search behavior was recorded. Infants searched more persistently (i.e., for a longer duration) after hearing two labels than one, suggesting that hearing two labels led the infants to expect two objects inside the box. In Experiment 2, infants' search behavior did not differ depending on whether they heard one or two emotional expressions, suggesting that the facilitation effect observed in Experiment 1 may be specific to linguistic expressions. Thus, we provide the first evidence that infants as young as 12 months are able to use intentional and referential cues to guide their object representations. These findings also suggest that a rudimentary version of the mutual-exclusivity constraint may be functional by the end of the first year.     

From referral to disposition: case processing in seven mental health courts

The number of mental health courts in the United States is rapidly increasing, from one in 1997 to nearly 100 in 2004. However, to date there is comparatively little research regarding these specialty courts. The present study reports data on the referral and disposition decision-making processes of seven mental health courts. Information on all referrals to the seven courts over a three-month period was gathered. Results show that, in comparison with individuals involved in the criminal justice system, mental health court clients are more likely to be older, White, and women than individuals in the general criminal justice system. Furthermore, this over-representation occurs at the point of referral, rather than at the point of the court's decision to accept or reject a referral. In addition, the length of time from referral to diversion is much longer in these mental health courts than in other types of diversion programs. Implications of these findings are discussed.     

Acute stress disorder: a synthesis and critique

The diagnosis of acute stress disorder (ASD) was introduced to describe initial trauma reactions that predict chronic posttraumatic stress disorder (PTSD). This review outlines and critiques the rationales underpinning the ASD diagnosis and highlights conceptual and empirical problems inherent in this diagnosis. The authors conclude that there is little justification for the ASD diagnosis in its present form. The evidence for and against the current emphasis on peritraumatic dissociation is discussed, and the range of biological and cognitive mechanisms that potentially mediate acute trauma response are reviewed. The available evidence indicates that alternative means of conceptualizing acute trauma reactions and identifying acutely traumatized people who are at risk of developing PTSD need to be considered.     

Cuing interacts with perceptual load in visual search

We tested the strong form of the perceptual-load hypothesis, which posits that the amount of perceptual load is the only factor determining whether attention can be effectively focused. Participants performed a visual search task under conditions of low and high load and with either a 100% valid spatial cue or no spatial cue. With no cue, participants showed evidence of processing to-be-ignored stimuli when perceptual load was low but not when it was high, consistent with the perceptual-load hypothesis. However, with a 100% valid spatial cue, participants showed little evidence of processing to-be-ignored stimuli, even when perceptual load was low. These results suggest that although perceptual load may be an important factor in attentional selectivity, load alone is not sufficient to explain how and when selective attention is effective.     

The influence of power and solidarity on emotional display rules at work

This study examined the influence of two interpersonal relationship dimensions, relative power and solidarity (closeness), on the emotional display rules that employees report they would adopt in work situations in which they felt happiness or anger. Results demonstrated that display rules involved more control over emotional expressions (i.e., more deamplification and masking of emotion and less expressing and amplification of emotion) when the interaction partner had higher relative power compared to when the interaction partner had equal or lower relative power. This pattern of results was present for both happiness and anger, though the effects were larger for anger. Display rules also involved more control when the interaction partner was low in solidarity compared to when the interaction partner was high in solidarity, with this effect being similar in magnitude for anger and happiness.     

Environmental Influences on Fighting Versus Nonviolent Behavior in Peer Situations: A Qualitative Study with Urban African American Adolescents

This qualitative study explored environmental factors that influence adolescents’ responses to problem situations involving peers. Interviews were conducted with 106 middle school students (97% African American) from an urban school system. Participants were asked to describe factors that would make it easier and those that would make it more difficult for adolescents to make specific responses to problem situations. Two types of responses were presented: nonviolent responses identified as effective in a previous study, and fighting responses. Qualitative analysis identified 24 themes representing family, peer, school, and neighborhood and broader social factors that were related to both nonviolent behavior and fighting. The identification of environmental influences on fighting and nonviolent responses has important implications for efforts to reduce aggression and promote effective nonviolent responses to problem situations encountered by adolescents.