Impulsive and premeditated subtypes of aggression in conduct disorder: differences in time estimation

Research aimed at identifying and studying subtypes of aggression have historically dichotomized aggressive subtypes, although specific nomenclature has varied; one approach has been to classify aggressive behavior as predominantly impulsive or predominantly premeditated. There are a number of behavioral and cognitive differences between those exhibiting these different forms of aggression. This study was designed to extend understanding of the impulsive/premeditated aggression dichotomy by comparing time estimation among adolescents exhibiting predominantly impulsive or predominantly premeditated forms of physical aggression who have a psychiatric diagnosis of conduct disorder (CD). Time estimation has previously been shown to be disrupted in impulsive and some aggressive individuals. Time estimation was compared between healthy Controls (n = 37) and two groups of adolescents with CD, those with histories of either predominantly impulsive (CD-Impulsive, n = 26) or predominantly premeditated (CD-Premeditated, n = 38) aggressive behaviors. Participants completed five computerized trials during which they estimated when 1 min had passed. Among aggressive adolescents with CD, the misperception of time was specific to those with histories of impulsive aggression, although time estimates improved with repeated testing and performance feedback. This study confirms the importance of considering the role and type of physical aggression when studying heterogeneous diagnostic groups like CD and supports the relevance of time estimation to certain subgroups of adolescents with CD.     

GROUP-LEVEL COPING AS A MODERATOR BETWEEN HETEROSEXISM AND SEXISM AND PSYCHOLOGICAL DISTRESS IN SEXUAL MINORITY WOMEN

The purpose of this study was: (1) to examine concurrently the relationship between heterosexist events and sexist events and psychological distress and (2) to investigate sexual orientation–based and gender-based group-level coping as potential moderators of the heterosexism–distress and sexism–distress links among 282 lesbian and bisexual women. Findings from the Internet survey revealed that, when examined together, both heterosexism and sexism were unique and additive predictors of psychological distress. Results also supported a moderating role of feminist group-level coping in the link between number of sexist events and psychological distress, with the difference between the high– and low–feminist-activity groups occurring at the lower levels of sexism. Thus, it appears that high involvement in feminist activities may provide a buffer against the negative effects of sexism, but only when sexist events are relatively low in number.     

Safer Sex Among HIV+ Women: The Role of Relationships

Among 230 HIV+ women in New York City, 105 had been heterosexually active in the last 90 days and 54% of these reported unsafe sex. Contrary to our hypotheses based on relational theory, respondents with steady partners were more likely to have unprotected sex than nonpartnered women. However, among respondents with steady partners, the degree of commitment to the relationship was positively associated with condom use. The only other correlate of unprotected sex was current drug use. Almost all steady partners were aware of the woman's HIV status, and, contrary to our hypothesis, respondents were not more likely to have protected sex with HIV– than HIV+ steady partners. The discussion considers self-in-relation theory, culture, power, and contextualistic behaviorism.     

Perception of audiovisual infant directed speech

Infant perception often deals with audiovisual speech input and a first step in processing this input is to perceive both visual and auditory information. The speech directed to infants has special characteristics and may enhance visual aspects of speech. The current study was designed to explore the impact of visual enhancement in infant-directed speech (IDS) on audiovisual mismatch detection in a naturalistic setting. Twenty infants participated in an experiment with a visual fixation task conducted in participants’ homes. Stimuli consisted of IDS and adult-directed speech (ADS) syllables with a plosive and the vowel /a:/, /i:/ or /u:/. These were either audiovisually congruent or incongruent. Infants looked longer at incongruent than congruent syllables and longer at IDS than ADS syllables, indicating that IDS and incongruent stimuli contain cues that can make audiovisual perception challenging and thereby attract infants’ gaze.     

Exploration of an adaptive training regimen that can target the secondary memory component of working memory capacity

The dual-component model contends that working memory (WM) capacity consists of two components. The first is a flexible attention component that involves the active maintenance of a limited amount of information in primary memory (PM), and the second is a controlled retrieval component that involves a cue-dependent search of secondary memory (SM) for information that has been lost from PM. Recent evidence has suggested that the adaptive WM training regimen known as “Cogmed-RM” is not optimally designed, because it only targets PM abilities, not SM abilities. The present study was conducted to investigate whether Cogmed-RM could be modified to target SM abilities by decreasing the recall accuracy threshold that defines individual ability during training. The main findings suggested that the SM component of WM capacity could be targeted by lowering the recall accuracy threshold. The present findings are important because they suggest that adaptive training regimens can be designed that selectively target specific components of WM capacity, and they raise the possibility that the potency of existing training regimens can be increased.