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.     

Psychopathy and the ability to read the “language of the eyes”: Divergence in the psychopathy construct

The capacity to interpret others people's behavior and mental states is a vital part of human social communication. This ability, also called mentalizing or Theory of Mind (ToM), may also serve as a protective factor against aggression and antisocial behavior. This study investigates the relationship between two measures of psychopathy (clinical assessment and self‐report) and the ability to identify mental states from photographs of the eye region. The participants in the study were 92 male inmates at Bergen prison, Norway. The results showed some discrepancy in connection to assessment methodology. For the self‐report (SRP‐III), we found an overall negative association between mental state discrimination and psychopathy, while for the clinical instrument (PCL‐R) the results were more mixed. For Factor 1 psychopathic traits (interpersonal and affective), we found positive associations with discrimination of neutral mental states, but not with the positive or negative mental states. Factor 2 traits (antisocial lifestyle) were found to be negatively associated with discrimination of mental states. The results from this study demonstrate a heterogeneity in the psychopathic construct where psychopathic traits related to an antisocial and impulsive lifestyle are associated with lower ability to recognize others' mental states, while interpersonal and affective psychopathic traits are associated with a somewhat enhanced ability to recognize others' emotional states.     

Precursors to aggression are evident by 6 months of age

We tested the hypothesis that developmental precursors to aggression are apparent in infancy. Up to three informants rated 301 firstborn infants for early signs of anger, hitting and biting; 279 (93%) were assessed again as toddlers. Informants' ratings were validated by direct observation at both ages. The precursor behaviours were significantly associated with known risk factors for high levels of aggressiveness. Individual differences were stable from early infancy to the third year and predicted broader conduct problems. These findings suggest that some individuals set forth on the trajectory to high levels of aggression by 6 months of age. The findings have implications for developmental studies of aggression, clinical prevention and intervention strategies, and theoretical considerations regarding the detection of precursors in different domains of development.     

Feeling body dissatisfied after viewing thin-ideal pictures is mediated by self-activation

The present study sought to investigate the influence of self-activation on body and weight satisfaction in restrained and unrestrained eaters, after exposure to thin-ideal images. Restrained eaters (n = 39) and unrestrained eaters (n = 40) were randomly assigned to a self-activation manipulation versus a control manipulation. After the manipulation, all participants were exposed to eight thin-ideal images. Measures of state body and weight satisfaction and of social comparison tendencies were assessed throughout the experiment. Self-activated restrained eaters showed a significant decrease in body and weight satisfaction after exposure to thin-ideal images, compared to restrained eaters who were not self-activated. In unrestrained eaters, the self-activation manipulation did not have any effect on body or weight dissatisfaction. In conclusion, exposure to fashion models only had a negative influence on women's self-evaluations when two conditions were met: (1) the participant was ‘self-activated’ and (2) the participant classified as a restrained eater.     

Emotional Responses to Disfigured Faces: The Influences of Perceived Anonymity,Empathy, and Disgust Sensitivity

Two experiments investigated self-reported emotional reactions to photographs of people with attractive, unattractive, or structurally disfigured faces. In Experiment 1, participants viewing disfigured faces reported raised levels of sorrow and curiosity but not raised levels of negative emotions. In Experiment 2, there was more negative emotion and less positive emotion reported under conditions of relatively high anonymity, compared to low anonymity, specific to disfigured faces, suggesting that self-reports are influenced by social desirability. Trait empathy was associated with sorrow and negative emotions when viewing disfigured faces. Disgust sensitivity was associated with negative emotions and inversely associated with positive emotions.     

Upward and downward social comparisons can decrease prosocial behavior

This experiment addressed whether upward or downward social comparisons can affect people's prosocial behavior toward the comparison targets. Undergraduates (N = 123) completed an inkblot test and then were randomly assigned to conditions in which they were told that their performance was either inferior or superior to their peers. A control group was given no performance feedback. Participants' self‐reported prosocial behaviors were measured 2 days later. Results indicated that both the upward and downward comparison groups engaged in significantly less prosocial behavior than did the control group and that empathy toward their peers mediated this effect. Our findings suggest that upward or downward comparison can make people feel less empathic toward the targets and thus less inclined to help them.     

Negative affectivity,perceived occupational stress,and health during organisational restructuring: A follow-up study

Abstract

This paper presents a survey of the relationships among multiple indicators of perceived occupational stress, trait negative affectivity, and later mental and physical health symptoms, among 157 Australian public servants during organisational restructuring. It was hypothesised that individual differences in negative affectivity would inflate the relationships between perceived stress and later strain as assessed by health symptoms in the follow-up phase. The possible role of negative affectivity in moderating the stress-strain relationships was also investigated. Multiple regression analyses conducted with depressive and physical health outcomes separately indicate that the only significant predictors of depressive symptoms were negative affectivity and role insufficiency, whereas the significant predictors of physical health symptoms were role ambiguity, physical environment, and negative affectivity. None of the interaction terms involving occupational stress and negative affectivity was found to be significant Implications of the findings are discussed in the context of the research literature on work stress, particularly the role of negative affectivity in inflating the stress-strain relationship and indications for future research.     

Cross-Cultural Attitude Assessment With the Miale-Holsopple Sentence Completion Test

Certain sentence stems in the 73 item Miale-Holsopple Sentence Completion Test can be interpreted as open-ended attitude questions, revealing world views in particular societies. Sentence stems #7, "The easiest way to get money;" #8, "Twenty years from now;" #18, "The white girl who married the black man;" #48, "A naked man;" and #54, "A woman's body" were selected for cross-cultural study. Thirty-nine American college students answered the standard form of the Miale-Holsopple, and 60 Brazilian students answered a Portuguese version of this test. American students gave more positive work ethic responses to stems #7 and #8 and more negative responses to interracial marriages than did Brazilians. The Brazilian females gave more positive responses to stem #54 than did American women.     

Revisiting the self-interest versus values debate: The role of temporal perspective

Scholars of public opinion have struggled to explain why people often vote against their economic self-interest in favor of a value-based rationale. Based on Construal Level Theory (Liberman, Trope, & Stephan, 2007), we argue that both values and material self-interest affect social and political attitudes, but in different temporal contexts. Specifically, because material self-interest is more concrete and applicable to everyday concerns, we predict that it should carry more weight with regard to judgments made in the context of the near future. In contrast, values, which are more abstract by nature, should carry greater weight for judgments made in the distant future. In an experimental test of this hypothesis, we presented participants with a fictitious policy that affected their pocketbooks in an otherwise value-laden domain. We found that people's financial self-interest more strongly predicted attitudes toward a proposal to increase tuition in the near condition, whereas antiegalitarian values more strongly predicted attitudes in the far condition. These findings offer new insights into the symbolic politics debate.