Social interaction moderates the relationship between depressive mood and heart rate variability: Evidence from an ambulatory monitoring study.

Objective: There is considerable evidence that depressive mood is related to lower parasympathetic control of the heart, thus increasing cardiovascular risk. However, little is known about social factors (e.g., social affiliation) that might moderate this relationship. Design: The authors examined whether cardiac autonomic control in healthy individuals with depressive symptoms could be altered by social interaction. Therefore, the authors conducted a 22-hr ambulatory monitoring study with a sample of 63 adults. Main Outcome Measures: Depression was assessed by questionnaire. Heart rate, heart rate variability (HRV), physical activity, and negative affect were recorded throughout one day via portable monitoring devices. Results and Conclusion: Multilevel analyses revealed that depression was related to elevated negative affect and higher heart rate throughout the day. Moreover, there was a tendency toward lower HRV in individuals with higher depression scores. This association, however, was moderated by social context. When depressive participants were alone they evidenced lower HRV and higher negative affect, but not when they were engaged in social interactions with a partner, family members, or friends. These findings suggest that the relation between depression and cardiac autonomic control could be altered by social interaction, thus possibly buffering adverse health effects. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Do people aggress to improve their mood? Catharsis beliefs, affect regulation opportunity, and aggressive responding.

Do people aggress to make themselves feel better? We adapted a procedure used by G. K. Manucia, D. J. Baumann, and R. B. Cialdini (1984), in which some participants are given a bogus mood-freezing pill that makes affect regulation efforts ineffective. In Study 1, people who had been induced to believe in the value of catharsis and venting anger responded more aggressively than did control participants to insulting criticism, but this aggression was eliminated by the mood-freezing pill. Study 2 showed similar results among people with high anger-out (i.e., expressing and venting anger) tendencies. Studies 3 and 4 provided questionnaire data consistent with these interpretations, and Study 5 replicated the findings of Studies 1 and 2 using measures more directly concerned with affect regulation. Taken together, these results suggest that many people may engage in aggression to regulate (improve) their own affective states. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The association between the negative effects attributed to ecstasy use and measures of cognition and mood among users.

In self reports, abstinent ecstasy/polydrug users claim that they experience certain ongoing affective and psychological changes including elevated anxiety, arousal, and depression. In addition, various aspects of cognition (e.g., everyday memory, reasoning, executive functioning) appear to be affected. The present paper investigated the link between these two psychological sequelae. Ninety-five ecstasy/polydrug users completed tests of reasoning, intelligence, information processing speed, executive functioning, and everyday memory. Affect was measured via a mood adjective checklist. Adverse effects attributed to ecstasy were measured via responses to adjectives reflecting changes in users since they started using the drug. In addition, indicators of sleep quality and daytime sleepiness were obtained. Users attributed a number of adverse effects to ecstasy, namely heightened irritability, depression, paranoia, and deteriorating health. Adverse effects were significantly and negatively correlated with aspects of intelligence, everyday memory, and sleep quality. Length of use of ecstasy use was positively correlated with adverse effects. While many users attribute a number of adverse affects to their use of ecstasy, it remains unclear whether these self-perceptions are a corollary of the psychopharmacological effects of the drug or reflect factors which in fact predate its use. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The impact of positive mood on trust in interpersonal and intergroup interactions.

Although the trust development literature has been characterized overwhelmingly by rationality-based models, the current research attempts to explain how affect can influence this process. To better understand how and why affect would influence trust development, 5 experiments were conducted to examine the effects of positive mood on people’s tendencies to trust and distrust others. Consistent with theory, which argues that positive mood promotes schema reliance, the relationship between positive mood and trust was influenced by the presence of cues that indicated whether the other party was trustworthy or untrustworthy. Across 5 studies, trusting behaviors (Experiments 1–3) and perceptions of trustworthiness (Experiments 4 and 5) were found to be influenced by cues associated with trust or distrust. Specifically, when available cues about the other party promoted trust, people in a positive mood increased their trust; when cues promoted distrust, people in a positive mood decreased their trust. The data support the expectation that affect can influence trust development, although the relationship is more complex than main effect predictions of mood-congruency models. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Is expectancy reality? Associations between tension reduction beliefs and mood following alcohol consumption.

The present study investigated whether tension reduction expectancies were uniquely associated with self-reported mood following in-lab alcohol administration, given that little research has addressed this association. We also tested whether level of experience with alcohol, which may influence the learning of expectancies, moderated expectancy-mood associations. Regularly drinking college students (N = 145) recruited through advertisements completed self-report measures of positive alcohol expectancies, alcohol involvement, demographics, and pre- and post-drinking mood, and then consumed alcohol ad libitum up to four drinks in the laboratory. Regression analyses controlling for pre-consumption mood, blood alcohol concentration, and all other positive expectancies showed tension reduction expectancies to be a marginally significant positive predictor of negative mood post-drinking. This association was significant only for those who achieved lower blood alcohol concentrations in lab and those who reported less involvement with alcohol (i.e., lower typical quantity, heavy episodic drinking frequency, and years of regular drinking). Findings suggest that associations between expectations for mood and actual post-drinking mood outcomes may operate differently for less versus more involved drinkers. Clinical implications pertain to early intervention, when expectancies may be less ingrained and perhaps more readily modified. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Hostility, cigarette smoking, and responses to a lab-based social stressor.

High-trait hostility is associated with persistent cigarette smoking. To better understand mechanisms that may account for this association, we examined the effects of acute smoking abstinence and delayed versus immediate smoking reinstatement on responses to a social stressor among 48 low hostile (LH) and 48 high hostile (HH) smokers. Participants completed two laboratory sessions, one before which they had smoked ad lib and one before which they had abstained for the prior 12 hr. During each session, participants completed a stressful speaking task and then smoked immediately after the stressor or after a 15-min delay. The effect of immediate versus delayed smoking reinstatement on recovery in negative mood was significantly moderated by hostility. When reinstatement was delayed, HH participants showed significant increases in negative mood over time, whereas LH participants showed little change. When reinstatement was immediate, HH and LH smokers showed similar significant decreases in negative mood. Smoking abstinence did not moderate hostility effects. Cigarette smoking may prevent continuing increases in negative mood after social stress in HH smokers, which may partially explain their low rates of quitting. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relentless Patterns: The Immersive Interior

What happens when patterns become all pervasive? When pattern contagiously corrupts and saturates adjacent objects, artefacts and surfaces; blurring internal and external environment and dissolving any single point of perspective or static conception of space. Mark Taylor ruminates on the possibilities of relentless patterning in interior space in both a historic and a contemporary context. Copyright © 2009 John Wiley & Sons, Ltd.     

Distress tolerance and psychopathological symptoms and disorders: A review of the empirical literature among adults.

We review theory and empirical study of distress tolerance, an emerging risk factor candidate for various forms of psychopathology. Despite the long-standing interest in and promise of work on distress tolerance for understanding adult psychopathology, there has not been a comprehensive review of the extant empirical literature focused on the construct. As a result, a comprehensive synthesis of theoretical and empirical scholarship on distress tolerance, including integration of extant research on the relations between distress tolerance and psychopathology, is lacking. Inspection of the scientific literature indicates that there are a number of promising ways to conceptualize and measure distress tolerance, as well as documented relations between distress tolerance factors and psychopathological symptoms and disorders. Although promising, there also is notable conceptual and operational heterogeneity across the distress tolerance literature. Moreover, a number of basic questions remain unanswered regarding the associations between distress tolerance and other risk and protective factors and processes, as well as its putative role(s) in vulnerability for and resilience to psychopathology. Thus, the current article provides a comprehensive review of past and contemporary theory and research and proposes key areas for future empirical study of this construct. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Omega 3 polyunsaturated fatty acids and the treatment of depression

Depression is a common, recurrent, and debilitating illness that has become more prevalent over the past 100 years. This report reviews the etiology and pathophysiology of depression, and explores the role of omega 3 polyunsaturated fatty acids (n-3 PUFA) as a possible treatment. In seeking to understand depression, genetic factors and environmental influences have been extensively investigated. Research has led to several hypotheses for the pathophysiological basis of depression but a definitive pathogenic mechanism, or group thereof, has hitherto remained equivocal. To date, treatment has been based on the monoamine hypothesis and hence, selective serotonin reuptake inhibitors have been the most widely used class of medication. In the last decade, there has been considerable interest in n-3 PUFAs and their role in depression. These fatty acids are critical for development and function of the central nervous system. Increasing evidence from epidemiological, laboratory, and randomized placebo-controlled trials suggests deficiency of dietary n-3 PUFAs may contribute to development of mood disorders, and supplementation with n-3 PUFAs may provide a new treatment option. Conclusions based on systematic reviews and meta-analyses of published trials to date vary. Research into the effects of n-3 PUFAs on depressed mood is limited. Furthermore, results from such have led to conflicting conclusions regarding the efficacy of n-3 PUFAs in affecting reduction in symptoms of depression. PUFAs are generally well tolerated by adults and children although mild gastrointestinal effects are reported. There is mounting evidence to suggest that n-3 PUFAs play a role in depression and deserve greater research efforts.