A single bout of resistance exercise can enhance episodic memory performance

Acute aerobic exercise can be beneficial to episodic memory. This benefit may occur because exercise produces a similar physiological response as physical stressors. When administered during consolidation, acute stress, both physical and psychological, consistently enhances episodic memory, particularly memory for emotional materials. Here we investigated whether a single bout of resistance exercise performed during consolidation can produce episodic memory benefits 48 h later. We used a one-leg knee extension/flexion task for the resistance exercise. To assess the physiological response to the exercise, we measured salivary alpha amylase (a biomarker of central norepinephrine), heart rate, and blood pressure. To test emotional episodic memory, we used a remember-know recognition memory paradigm with equal numbers of positive, negative, and neutral IAPS images as stimuli. The group that performed the exercise, the active group, had higher overall recognition accuracy than the group that did not exercise, the passive group. We found a robust effect of valence across groups, with better performance on emotional items as compared to neutral items and no difference between positive and negative items. This effect changed based on the physiological response to the exercise. Within the active group, participants with a high physiological response to the exercise were impaired for neutral items as compared to participants with a low physiological response to the exercise. Our results demonstrate that a single bout of resistance exercise performed during consolidation can enhance episodic memory and that the effect of valence on memory depends on the physiological response to the exercise.     

Beyond good and evil: the time-course of neural activity elicited by specific picture content

The present study examined electrocortical evidence for a negativity bias, focusing on the impact of specific picture content on a range of event-related potentials (ERPs). To this end, ERPs were recorded while 67 participants viewed a variety of pictures from the International Affective Picture System. Examination of broad categories (i.e., pleasant, neutral, unpleasant) found no evidence for a negativity bias in two early components, the N1 and the Early Posterior Negativity (EPN), but revealed that unpleasant images did elicit a larger late positive potential (LPP) than pleasant pictures. However, images of erotica and mutilation elicited comparable LPP responses, as did affiliative and threatening images. Exciting (i.e., sports) images and disgusting images elicited smaller LPPs than other emotional images, similar to neutral images containing people-which were associated with the largest LPPs among neutral pictures. When these three anomalous categories (exciting, disgusting, and scenes with people) were excluded, unpleasant images no longer elicited a larger LPP than pleasant images. Thus, including exciting images in pleasant ERP averages disproportionately reduces the LPP. The present findings are discussed in light of the motivational significance of specific picture subtypes.     

Relationships among Athletic Identity,Coping Skills,Social Support,and the Psychological Impact of Injury in Recreational Participants

Abstract

The purpose of the present investigation was to examine athletic identity, coping skills, and social support as moderators of mood disturbance and physical self-esteem with the occurrence of injury in recreational participants. Thirty participants, who sustained an injury that prohibited physical activity for at least 6 weeks, completed a battery of questionnaires including measures of social support (Sarason, Levine, Basham, & Sarason, 1983), coping skills (Smith, Smoll, & Ptacek, 1990), athletic identity (Brewer, Van Raalte, & Linder, 1993), mood state (McNair, Lorr, & Droppleman, 1971), and physical self-esteem (Fox & Corbin, 1989). Results from multiple regression analysis revealed that individuals' satisfaction with their social support network was significantly related to mood disturbance with increased satisfaction leading to lower levels of mood disturbance. No other relationships were significant. Results are discussed within the context of cognitive appraisal models of adjustment in order to better understand the injury process.     

Building self-efficacy in tennis players: A coach's perspective

Abstract

The purpose of the present investigation was to assess the degree to which high school and age group tennis coaches use 13 strategies for influencing self-efficacy and their evaluation of the effectiveness of those strategies. Self-efficacy rating differences between categories of coaches (e.g., male versus female, successful versus less successful, more versus less experienced, physical education/coaching courses versus no courses) were also examined. Subjects were 222 high school and age group coaches in the Southwest and results indicated that they used all 13 strategies designed to enhance self-efficacy to a moderate degree and found these techniques to be at least moderately effective. More specifically, the most often used strategies to enhance self-efficacy as well as those strategies found most effective included encouraging positive self-talk, modeling confidence oneself, instruction-drilling, liberally rewarding statements, and verbal persuasion. Few between-coach differences were found in efficacy use and effectiveness ratings. Hcsults are discussed in terms of Gould, Hodge, Peterson, and Giannini's (1989) study concerning the use of efficacy enhancing strategies in elite coaches as well as Bandura's self-efficacy theory.     

The social organization of sadism and masochism

Sadism and masochism, traditionally studied as an individual psychopathology, may be more fully understood as a sociological phenomenon. Sadomasochists have developed a subculture characterized by a set of norms, shared ideologies, and a common argot. Contacts among sadomasochists are made through magazine advertisements, participation in clubs and organizations, through exposure to this behavior in other deviant subcultures, and fortuitously.

Sadomasochistic organizations, while differing widely among themselves, serve similar functions for their members: (1) they facilitate sexual and social contacts; (2) they provide members with information about techniques, events, other organizations, films, and so forth; (3) they develop and communicate justifications and apologias enabling people to accept their feelings and behavior as normal; and (4) they enable people to segregate their sadomasochistic needs and behavior from other areas of their lives.     

The Politics of Ethics in Human Services: Dueling Discourses

How ethics in human services is a political activity, shaping social relationships, is explored through the examination of two opposing discourses, a principle-based and a situated/relational narrative. Factors such as neo-liberalism, managerialism, and the risk-aversive society give a context for the reasons that the principle-based discourse has been the predominant influence, and what interests are served by this trope taking center stage. A delineation and critique of both perspectives are provided, including an explanation of the epistemological underpinnings of these discourses. The piece ends with what needs to be done to strengthen ethics.