Sylvian fissure and parietal anatomy in children with autism spectrum disorder

Autism spectrum disorder (ASD) is characterized by deficits in social functioning and language and communication, with restricted interests or stereotyped behaviors. Anatomical differences have been found in the parietal cortex in children with ASD, but parietal subregions and associations between Sylvian fissure (SF) and parietal anatomy have not been explored. In this study, SF length and anterior and posterior parietal volumes were measured on MRI in 30 right-handed boys with ASD and 30 right-handed typically developing boys (7-14 years), matched on age and non-verbal IQ. There was leftward SF and anterior parietal asymmetry, and rightward posterior parietal asymmetry, across groups. There were associations between SF and parietal asymmetries, with slight group differences. Typical SF asymmetry was associated with typical anterior and posterior parietal asymmetry, in both groups. In the atypical SF asymmetry group, controls had atypical parietal asymmetry, whereas in ASD there were more equal numbers of individuals with typical as atypical anterior parietal asymmetry. We did not find significant anatomical-behavioral associations. Our findings of more individuals in the ASD group having a dissociation between cortical asymmetries warrants further investigation of these subgroups and emphasizes the importance of investigating anatomical relationships in addition to group differences in individual regions.     

Feelings of dread and intertemporal choice

It frequently has been observed that people discount future rewards relative to present rewards. However, the literature on intertemporal choices involving emotional upsets and losses is fraught with inconsistencies, with some studies finding similar discounting of gains and losses, and others reporting that participants elect to undergo negative experiences sooner rather than later. To help resolve these contradictions, time preferences for different types of aversive experiences (social rejection, embarrassment, pain, monetary and property loss) were examined in five studies. Most participants preferred to postpone monetary and property losses, but intertemporal choices for other unpleasant experiences showed highly variable responses, with some participants deferring them as long as possible, and many electing to experience them immediately. Time preferences for these negative experiences were correlated, but were independent of time preference for rewards. It is argued (following Loewenstein, 1987 ) that anticipation of dread plays a key role in many people's choices about timing of aversive experiences. This interpretation was supported by choices about when to learn of a very unpleasant event whose timing was fixed (Study 3), and by a novel preference reversal (Study 4). Study 5 examined how actual and hypothetical experiences of dread unfolded over time; the results were consistent with a dread‐based interpretation of choices in the preceding studies. Copyright © 2010 John Wiley & Sons, Ltd.     

Health-protective effects of attachment among African American girls in psychiatric care

African American girls in psychiatric care are at increased risk for HIV and sexually transmitted infection (STI) through sexual risk taking. Adolescent sexual behavior often reflects peer norms and behavior. Secure attachment patterns with mothers and peers might lessen the effects of negative peer influences and reduce sexual risk taking among African American girls. This study examined the relationships among mother-daughter and peer attachment, peer norms, and sexual-risk behaviors in African American girls seeking outpatient psychiatric care. A group of 12-16-year-old African American girls (N = 262; M age = 14.45 years) reported on their attachment to their mothers and peers, peer risk-taking and dating behaviors, peer pressure, and sexual-risk behaviors (e.g., number of partners, high-risk partners, and condom use). Structural equation modeling examined whether peer attachment and peer norms mediated the relationship between mother attachment and sexual risk. Findings supported peer norms, but not peer attachment, as a mediator of mother attachment and girls' sexual-risk behaviors. Findings revealed important family and peer factors for African American girls in psychiatric care. HIV prevention programs may be strengthened by improving mother-daughter relationships, addressing the importance of peer relationships, and emphasizing how secure mother-daughter relationships can temper the impact of peer norms.     

Imperative inference and practical rationality

Philosophical Studies - Some arguments include imperative clauses. For example: ‘Buy me a drink; you can’t buy me that drink unless you go to the bar; so, go to the bar!’ How...     

Intolerance of uncertainty and novelty facilitated extinction: The impact of reinforcement schedule

Individuals who score high in intolerance of uncertainty (IU) display reduced threat extinction. Recently, it was shown that replacing threat associations with novel associations during extinction learning (i.e., presenting a novel tone 100% of the time) can promote threat extinction retention in individuals with high IU. This novelty facilitated extinction (NFE) effect could be driven by the tone's novelty or reliability. Here, we sought to address this question by adjusting the reliability of the novel tone (i.e., the reinforcement rate) during NFE. We measured skin conductance response during an associative learning task in which participants (n = 92) were assigned to one of three experimental groups: standard extinction, NFE 100% reinforcement, or NFE 50% reinforcement. For standard extinction, compared to NFE 100% and 50% reinforcement groups, we observed a trend for greater recovery of the conditioned response during extinction retention. Individuals with high IU relative to low IU in the standard extinction group demonstrated a larger recovery of the conditioned response during extinction retention. These findings tentatively suggest that NFE effects are driven by the novelty rather than the reliability of the new stimulus. The implications of these findings for translational and clinical research in anxiety disorder pathology are discussed.     

Getting What's New from Newcomers: Empowering Leadership,Creativity, and Adjustment in the Socialization Context

Researchers consistently argue that organizations need to generate creative ideas to ensure long‐term success and survival. One possible solution for increasing creativity is to inject “fresh blood” into the organization by hiring new employees. However, past work suggests there may be a number of impediments that stifle newcomer creativity and, further, that encouraging newcomer creativity may compromise other adjustment outcomes. Accordingly, the present research examines how empowering leaders, in conjunction with contextual and relational factors (i.e., organizational support for creativity and newcomers' trust in leaders), facilitate newcomer creativity. Study 1 indicates that empowering leadership positively predicts newcomer creativity and that this relationship is contingent on the organizational context. Study 2 reveals that a more specific and proximal contextual socialization factor–newcomers' trust in leaders–is a more potent moderator than organizational support for creativity. Further, these predictors operate through creative process engagement to influence creativity. Finally, results indicate positive links between empowering leadership and role clarity, attachment, and task performance, suggesting that empowering leadership may serve as an important, albeit overlooked, socialization tactic.     

When Civic Virtue isn’t Seen as Virtuous: The Effect of Gender Stereotyping on Civic Virtue Expectations for Women

We examined the extent to which observers’ expectations of target employees’ civic virtue organizational citizenship behaviors (OCB) are a function of both observer- (gender stereotype activation, threat) and target-related (gender) influences. Consistent with a role congruity perspective, we proposed that civic virtue (constructive involvement in the political governance process of the organization) will be expected to a lesser extent of women, but only when gender stereotypes are activated. We confirm this hypothesis across two studies. In Study 1, based on a sample of 187 U.S. undergraduate students (101 women, 86 men), we show that less civic virtue is expected of women when observers’ gender stereotypes are experimentally activated (vs. the non-activated condition). Using an additional sample of 197 U.S. undergraduate students (Study 2; 118 women, 79 men), we extend our findings by demonstrating that less civic virtue was expected of women in a high (vs. low) threat (manipulated) condition. Findings for men are included for comparative and general informational purposes only. We observed no significant changes in civic virtue expectations for men due to our study manipulations. Our research extends prior studies by showing that expectations for civic virtue are diminished for women, but only when gender stereotypes and threat are activated.     

Background Sound Impairs Interruption Recovery in Dynamic Task Situations: Procedural Conflict?

Interruptions impair performance even on simple, static, laboratory‐based tasks, but little research has looked at their impact in more complex and realistic settings that involve dynamically evolving circumstances and other environmental stressors. Using a radar operator task with or without background sound, participants were unexpectedly interrupted to complete another task, which masked the radar screen as the scenario continually evolved. Task efficiency was impaired by interruption: decision‐making time was slower immediately following interruption, this cost being greater and persevered longer in the presence of auditory distraction. Resumption time was also increased with distraction. Eye fixation durations were shorter following interruption, reflecting participants' attempts to rapidly re‐encode and update their model of the situation. These results suggest that those processes involved in task resumption are also susceptible to background sound, and indicate a need for theories of task interruption to better specify the role of attention in interruption recovery. Copyright © 2013 John Wiley & Sons, Ltd.