An Evaluation of an HIV/AIDS Prevention Program in a Nigerian Setting

The study examined the success of a group based behavioural intervention with Nigerian youths aimed at reducing the risk of contracting and spreading HIV/AIDS and other sexually transmitted illness (STI). Participants were 147 youths (males=75, females=72, age range 5 to 24 years). The study explored the influence of motivational factors (self efficacy), attitudinal factors (perceived personal risk), knowledge (instrumental knowledge of AIDS) and behavioural factors (refusal of high-risk behaviour) in predicting condom use amongst youth participating in a group-based HIV prevention intervention. Findings indicated that the intervention program reliably predicted participants' attitudinal dispositions to high risk heterosexual behaviour. Instrumental knowledge of HIV/AIDS, perceived self-efficacy, perceived personal risk of HIV/AIDS and refusal of risk behaviour were significant predictors of condom use.     

Cut Elimination for GLS Using the Terminability of its Regress Process

The system GLS, which is a modal sequent calculus system for the provability logic GL, was introduced by G. Sambin and S. Valentini in Journal of Philosophical Logic, 11(3), 311–342, (1982), and in 12(4), 471–476, (1983), the second author presented a syntactic cut-elimination proof for GLS. In this paper, we will use regress trees (which are related to search trees) in order to present a simpler and more intuitive syntactic cut derivability proof for GLS₁, which is a (more connectively and inferentially economical) variant of GLS without the cut rule.     

An attempt to condition extrasystoles using direct myocardial electrical stimulation as an unconditional stimulus

Conditioning of extrasystoles which were induced by direct electrical stimulation of the ventricular myocardium was attempted. It was found that this type of cardiac irregularity which is entirely peripheral in origin could not be conditioned. Other studies have shown that extrasystoles which are produced by stimulation of the central nervous system can be conditioned. The study supports the theory that the effect of stimuli which produce physiological changes at the periphery without intermediate involvement of the central nervous system cannot be conditioned.     

Priming as a way of understanding children’s mental representations of the social world

Priming is a well established tool for experimental examination of how mental representations drive thoughts, feelings, and behaviors that has been widely used in adult research. Priming is also a well established technique in cognitive development research. Social development research, however, has rarely used priming as a research method despite evidence that this technique is promising for helping researchers untangle causal connections between children’s mental representations and children’s social development outcomes. This paper discusses how priming methods may yield important insights into the role that children’s mental representations of the social world play in children’s social functioning. We begin by discussing the theoretical conceptualization underlying priming and priming methods. We next review evidence demonstrating the effectiveness of priming techniques in child development research. We conclude by suggesting ways in which priming can inform future research in social development using research examining attachment, social-information-processing, gender development, and mood and mental health as examples.     

Specific Pathways from Parental Distress Reactions to Adolescent Depressive Symptoms: The Mediating Role of Youths’ Reactions to Negative Life Events

The current multimethod longitudinal study examines how parents’ distress reactions to adolescents’ negative emotions may shape youths’ own perceptions of negative life events and subsequent increases in depressive symptomology. Ninety adolescents (41 girls, 49 boys, average age?=?16.5 years old) and their parents were assessed over three timepoints. We found that greater parent-reported distress reactions to adolescents’ emotions predicted subsequent increase in youths’ own self-reported negative reactions to stressful experiences over a two-week period, which in turn predicted steeper increases in youth-reported depressive symptoms across this same two-week period. Moreover, youths’ negative reactions mediated the relation between parent emotion socialization and increases in adolescent depressive symptoms. These findings support the use of interventions that simultaneously target parent and child distress to prevent the onset of adolescent depression.

     

Resisting temptation and overcoming procrastination: The roles of mental time travel and metacognition

Phenomenology and the Cognitive Sciences - We tend to seek immediate gratification at the expense of long-term reward. In fact, the more distant a reward is from the present moment?the more we tend...     

The validation of an active control intervention for Mindfulness Based Stress Reduction (MBSR)

Most of the extant literature investigating the health effects of mindfulness interventions relies on wait-list control comparisons. The current article specifies and validates an active control condition, the Health Enhancement Program (HEP), thus providing the foundation necessary for rigorous investigations of the relative efficacy of Mindfulness Based Stress Reduction (MBSR) and for testing mindfulness as an active ingredient. 63 participants were randomized to either MBSR (n = 31) or HEP (n = 32). Compared to HEP, MBSR led to reductions in thermal pain ratings in the mindfulness- but not the HEP-related instruction condition (η² = .18). There were significant improvements over time for general distress (η² = .09), anxiety (η² = .08), hostility (η² = .07), and medical symptoms (η² = .14), but no effects of intervention. Practice was not related to change. HEP is an active control condition for MBSR while remaining inert to mindfulness. These claims are supported by results from a pain task. Participant-reported outcomes (PROs) replicate previous improvements to well-being in MBSR, but indicate that MBSR is no more effective than a rigorous active control in improving these indices. These results emphasize the importance of using an active control condition like HEP in studies evaluating the effectiveness of MBSR.