Myosin II motor activity in the lateral amygdala is required for fear memory consolidation

Learning induces dynamic changes to the actin cytoskeleton that are required to support memory formation. However, the molecular mechanisms that mediate filamentous actin (F-actin) dynamics during learning and memory are poorly understood. Myosin II motors are highly expressed in actin-rich growth structures including dendritic spines, and we have recently shown that these molecular machines mobilize F-actin in response to synaptic stimulation and learning in the hippocampus. In this study, we report that Myosin II motors in the rat lateral amygdala (LA) are essential for fear memory formation. Pretraining infusions of the Myosin II inhibitor, blebbistatin (blebb), disrupted long term memory, while short term memory was unaffected. Interestingly, both post-training and pretesting infusions had no effect on memory formation, indicating that Myosin II motors operate during or shortly after learning to promote memory consolidation. These data support the idea that Myosin II motor-force generation is a general mechanism that supports memory consolidation in the mammalian CNS.     

Do motivational interviewing behaviors predict reductions in partner aggression for men and women?

Motivational interviewing is a directive, non-confrontational intervention to promote behavior change. The current study examined therapist behaviors during a successful brief motivational interviewing intervention for physically aggressive college dating couples (Woodin & O'Leary, 2010). Forty-five minute motivational interviews with each partner were videotaped and coded using the Motivational Interviewing Treatment Integrity scale (MITI; Moyers, Martin, Manuel, & Miller, 2003). Hierarchical modeling analyses demonstrated that therapist behaviors consistent with motivational interviewing competency predicted significantly greater reductions in physical aggression perpetration following the intervention. Specifically, greater reflection to question ratios by the therapists predicted reductions in aggression for both men and women, greater percentages of open versus closed questions predicted aggression reductions for women, and there was a trend for greater levels of global therapist empathy to predict aggression reductions for women. These findings provide evidence that motivational interviewing seems to have an effect on behavior change through therapist behaviors consistent with the theoretical underpinnings of motivational interviewing.     

The dangers of dating the “bad boy” (or girl): When does romantic desire encourage us to take on the negative qualities of potential partners?

People generally strive to maintain positive views of themselves. Even in the face of negative feedback, individuals frequently protect the self-concept from incorporating negative information. Two studies examined a potential exception to that rule: whether and when romantic desire may motivate individuals to spontaneously adopt the negative attributes of a potential partner. Study 1 demonstrated the basic effect such that single individuals spontaneously incorporated negative attributes of a potential romantic partner into their self-concepts, and incorporation was magnified by desire for the partner. Study 2 explored boundary conditions of these effects. Negative attributes were only incorporated if the potential partner expressed self-acceptance about possessing these attributes; when potential partners reported wishing to change the negative attribute, it was not adopted into the self-concept. Attribute extremity also moderated incorporation. The implications of these results for understanding the nuances of motivated self-malleability are discussed.     

Evaluation of an Internet-short message service-based intervention for promoting physical activity in Hong Kong Chinese adolescent school children: a pilot study

Evaluation of acceptability and preliminary efficacy of an Internet and short message service (SMS) intervention for promoting physical activity (PA) in Hong Kong Chinese school children. An 8-week quasi-experimental study non-randomly assigned 78 school children (mean age=12.8 years) to (a) an intervention group that received a stage-matched, Internet PA program two times a week and tailored SMS messages daily; or (b) a no-treatment control. Data were collected from September 2008 until June 2009. Acceptability measures included exposure rate and participant's satisfaction. Efficacy measures were changes in stage of motivational readiness (SMR) and self-reported PA level. Intervention participants demonstrated significant pre-post increments in SMR (Z=-2.558, p=0.011) and self-reported PA level [F(1, 76)=4.50, p=0.04]. There was a non-significant trend between groups in both SMR (p=0.24) and PA (p=0.13). Despite the similar ratings of satisfaction between Internet (M=3.12±0.74) and SMS (M=3.12±0.84), participants displayed distinct patterns of exposure with 66% exhibiting a weekly login rate of 0.5 times/person and an average of 3.75 minutes/visit/person. In contrast, 79% of participants read an average of 1.3 SMS/person/week and 47% voluntarily replied to ～3.8 SMS/person. These findings demonstrate the acceptability and preliminary efficacy of an Internet-SMS-based intervention for promoting PA in Hong Kong school children. The divergent exposure rates between the Internet and SMS may be a unique pattern for adolescents in early SMR. Future research should be cognizant of the importance of SMR since it may influence utilization and/or adherence.     

The Appropriate Use and Misuse of Social Media in MFT Training Programs: Problems and Prevention

Directors of accredited marriage and family therapy programs were surveyed to determine what problems they had experienced resulting from student, faculty, and client misuse of social media. Approximately 40 % of the programs had encountered a problem resulting from student misuse of social media. The directors were also asked what efforts were made by their program and university to promote the appropriate use of social media, with programs assuming primary responsibility for addressing this issue. The study also assessed attitudes among directors regarding how to handle potential issues that may arise in training programs regarding the use of social media. Implications for training programs are provided.     

Does overgeneral autobiographical memory result from poor memory for task instructions?

Considerable previous research has shown that retrieval of overgeneral autobiographical memories (OGM) is elevated among individuals suffering from various emotional disorders and those with a history of trauma. Although previous theories suggest that OGM serves the function of regulating acute negative affect, it is also possible that OGM results from difficulties in keeping the instruction set for the Autobiographical Memory Test (AMT) in working memory, or what has been coined “secondary goal neglect” (Dalgleish, 2004). The present study tested whether OGM is associated with poor memory for the task's instruction set, and whether an instruction set reminder would improve memory specificity over repeated trials. Multilevel modelling data-analytic techniques demonstrated a significant relationship between poor recall of instruction set and probability of retrieving OGMs. Providing an instruction set reminder for the AMT relative to a control task's instruction set improved memory specificity immediately afterward.     

Think-aloud protocols and the selection task: Evidence for relevance effects and rationalisation processes

Two experiments are reported that employed think-aloud methods to test predictions concerning relevance effects and rationalisation processes derivable from Evans' (1996) heuristic-analytic theory of the selection task. Evans' account proposes that card selections are triggered by relevance-determining heuristics, with analytic processing serving merely to rationalise heuristically cued decisions. As such, selected cards should be associated with more references to both their facing and their hidden sides than rejected cards, which are not subjected to analytic rationalisation. Experiment 1 used a standard selection-task paradigm, with negative components permuted through abstract conditional rules. Support was found for all heuristic-analytic predictions. This evidence was shown to be robust in Experiment 2, where “select - don't select” decisions were enforced for all cards. Both experiments also clarify the role played by secondary heuristics in cueing the consideration of hidden card values during rationalisation. We suggest that whilst Evans' heuristic-analytic model and Oaksford and Chater's (e.g., 2003) optimal data selection model can provide compelling accounts of our protocol findings, the mental models theory fares less well as an explanation of our full dataset.     

Enacting support within church communities for people living with HIV or AIDS

Social support is important in managing HIV and AIDS. Some people living with HIV or AIDS (PLWHA) have sought support from churches, despite their reputation for stigmatising PLWHA. Semi-structured interviews were conducted with 21 PLWHA and 21 church leaders to identify ways that churches can effectively enact support for PLWHA through improved communication about HIV, AIDS, and related issues. Church leaders also were asked about the institutional barriers to enacting support for PLWHA. Implementing these strategies consistently and holistically will require intentional efforts to address the barriers within church organisations to create environments that are welcoming to and supportive of PLWHA.     

Sexual Socialization Messages on Entertainment Television: Comparing Content Trends 1997–2002

Previous content analyses of sex on television have relied on differing measures and sampling strategies, which makes it difficult to compare patterns of sexual portrayals over time. This large-scale study (N = 2,817 programs) examines the sexual messages presented on television across both broadcast and cable channels over a 5-year period, applying identical measures to three biennial samples of program content. Results demonstrate that sexual talk and behavior are highly frequent aspects of the television environment. Talk about sex is shown more often than sexual behavior, though both types of content increased significantly from 1997/1998 to 2001/2002. Over that time span, the percentage of shows portraying sexual intercourse doubled from 7 to 14%. Results also show that topics related to sexual risks or responsibilities (e.g., condom use, abstinence) are increasingly included on television, but nonetheless remain infrequent overall. Such safe sex messages occur most frequently in program environments where they are most relevant (i.e., when sexual intercourse is included in the story). The content analysis findings are discussed in terms of their implications for audience effects.