Does social environment influence learning ability in a family-living lizard?

Early developmental environment can have profound effects on individual physiology, behaviour, and learning. In birds and mammals, social isolation during development is known to negatively affect learning ability; yet in other taxa, like reptiles, the effect of social isolation during development on learning ability is unknown. We investigated how social environment affects learning ability in the family-living tree skink (Egernia striolata). We hypothesized that early social environment shapes cognitive development in skinks and predicted that skinks raised in social isolation would have reduced learning ability compared to skinks raised socially. Offspring were separated at birth into two rearing treatments: (1) raised alone or (2) in a pair. After 1 year, we quantified spatial learning ability of skinks in these rearing treatments (N = 14 solitary, 14 social). We found no effect of rearing treatment on learning ability. The number of skinks to successfully learn the task, the number of trials taken to learn the task, the latency to perform the task, and the number of errors in each trial did not differ between isolated and socially reared skinks. Our results were unexpected, yet the facultative nature of this species’ social system may result in a reduced effect of social isolation on behaviour when compared to species with obligate sociality. Overall, our findings do not provide evidence that social environment affects development of spatial learning ability in this family-living lizard.     

Does social support reduce distress caused by ostracism? It depends on the level of one's self-esteem

We hypothesized that the companionship of a close other would buffer the negative effect of ostracism for people with a strong sense of self-esteem. Participants were either included or ostracized during the experiment with the presence of a close other or a stranger. We measured the participants' self-esteem and feelings about the ostracism or inclusion experience. Consistent with our predictions, participants accompanied by a close other were less threatened by the ostracism experience than those accompanied by a stranger; furthermore, the buffering effect of a social companion on ostracism was more apparent among participants high in self-esteem but not among those low in self-esteem. The implications of these findings for ostracism research were discussed.     

Is obsessive-compulsive disorder caused by a second-messenger imbalance?

Although the precise etiologic nature of obsessive-compulsive disorder (OCD), one of the most common psychiatric conditions, is unknown, several findings indicate involvement of the serotonin (5-HT) transporter. Apart from the specific effects of selective 5-HT reuptake inhibitors, other studies show decreased functionality of the platelet 5-HT transporter in OCD. In this report, the authors combine data from two independent studies of patients with OCD, showing both an increased activity of protein kinase type C (PKC) and a decreased activity of protein kinase type A (PKA). The authors propose a unifying hypothesis that OCD might be determined by an imbalance between PKC and PKA, with a prevalence of the former and, more generally, of the phosphoinositide over the cyclic adenosine monophosophate (cAMP) pathway. Should this hypothesis prove correct, the path would be open for new therapeutic interventions in the treatment of OCD.     

IV. Does a generalized Heisenberg principle operate in the social sciences?

It is argued that a generalization of Heisenberg's principle of indeterminacy is possible in the social sciences. The empirical grounds for this contention lie with interference phenomena induced by transference distortions that may occur when human beings investigate the behaviour of one another.     

Is a change in work motivation related to a change in mental well-being?

The purpose of the study was to investigate the effect of changes on work motivation and the effect of the changes on future mental well-being. This prospective study comprised 577 employees who were followed up 18 months after a comprehensive baseline measurement. The response rate was 81% for the baseline and 72% for the follow-up. The results show that both negative and positive changes in work motivation over time (18 months) were related to exhaustion. A similar correlation was found between negative changes in work motivation and depression. The results show that employees with a decreased level of work motivation had a higher risk of experiencing more exhaustion and depression in the future. Thus, investing in activities to promote work motivation may be an effective means of preventing long-term sick leave for stress-related mental illness and of providing energy for successful career advancement.     

Is a change in work motivation related to a change in mental well-being?

The purpose of the study was to investigate the effect of changes on work motivation and the effect of the changes on future mental well-being. This prospective study comprised 577 employees who were followed up 18 months after a comprehensive baseline measurement. The response rate was 81% for the baseline and 72% for the follow-up. The results show that both negative and positive changes in work motivation over time (18 months) were related to exhaustion. A similar correlation was found between negative changes in work motivation and depression. The results show that employees with a decreased level of work motivation had a higher risk of experiencing more exhaustion and depression in the future. Thus, investing in activities to promote work motivation may be an effective means of preventing long-term sick leave for stress-related mental illness and of providing energy for successful career advancement.     

Does social support predict smoking abstinence in dual-smoker couples? Evidence from a dyadic approach

Background and Objectives: Romantic partners have a significant influence on their health behaviors. Evidence for the effectiveness of social support for smoking abstinence, however, is mixed and the role of social support for smoking abstinence in dual-smoker couples is understudied.

Design: 77 dual-smoker couples were assessed 30 days after a joint quit attempt using a dyadic approach.

Methods: Received and provided support, self-reported and objectively measured smoking abstinence were assessed from both partners. Actor and partner effects of received and provided support on self-reported and objectively measured smoking abstinence and their difference for men and women were investigated with the Actor–Partner Interdependence Model using multilevel modeling.

Results: A significant actor effect emerged: Higher reports of received emotional support were related to an increased likelihood of objective smoking abstinence for men and women alike. For men only, partner effects of women’s received emotional and instrumental support emerged (p?<?.10): Higher reports of women’s support receipt were associated with an increased likelihood of men’s self-reported abstinence.

Conclusion: Received emotional support seems to play a key role in dual-smoker couple’s abstinence, whereas provided support does not seem to make a difference in successful quitting in dual-smoker couples.     

Does fear modulate defensive and offensive types of maternal attack in mice?

Swiss CD‐1 lactating mice show a different pattern of attack toward intruders of differing sex, displaying defensive attack against the male (bites on the head and ventrum associated with fear) and offensive attack against the female (bites on the back and flanks with no elicitation of fear). This dichotomy may reflect diverse functions of maternal aggression: the attack toward males (the more infanticidal gender in laboratory strains) has been interpreted as a counterstrategy to infanticide, whereas the attack toward females may serve to establish a social hierarchy or to space rivals of the same sex. In terms of proximal mechanisms, fear may be a key factor involved in the modulation of the different patterns of attack. In Experiment 1 we compared the pattern of attack of lactating females in Swiss CD‐1 and Wild mice toward male and female intruders in relation to fear components of behavior of the attacking dams. Results showed that in Swiss mice, male intruders were attacked with a defensive type of attack accompanied by high levels of fear, whereas female intruders did not elicit fear in the attacking animal but were attacked with an offensive pattern. In Wild mice, both types of intruders were attacked with a defensive pattern; notwithstanding, fear was evident only toward male intruders. This suggests that fear is not totally responsible for the expression of the defensive type of attack. To test the hypothesis that defensive attack toward male and female intruders may be related to the infanticidal potential of the intruder, Experiment 2 examined levels of infanticide in both male and female Swiss CD‐1 and Wild mice. Swiss female mice showed virtually no infanticidal behavior, whereas Swiss males and both sexes of Wild mice showed similarly high levels of infanticide (55%–75%). From a game theory perspective, the defensive pattern of maternal attack toward female intruders in Wild mice is discussed as “extreme” defense of a high value resource and thus, functionally, a competitive form of aggression. Aggr. Behav. 26:193–203, 2000. © 2000 Wiley‐Liss, Inc.     

Belief in afterlife as a moderator of fear of death?

Investigating the notion that belief in afrerlife (BA) serves the function of helping the individual to deal with fear of death, a study was designed to explore the effect of public commitment to religion, repression-sensitization, and anticipatory concern with death and dying on BA, and examine the relationship between BA and state anxiety. Fifty students of theology and fifty students of various other subjects responded to a German version of Byrne's R-S scale, and then were randomly assigned to two conditions: they either worked through Thanatos-Questionnaire, and thereby were confronted with death and dying for about 15 to 20 minutes, or filled out a questionnaire unrelated to the topic. Thereupon, a BA scale was administered, and at last, subjects responded to a scale measuring state anxiety. The findings of Osarchuk and Tatz (1973) that religiously committed persons are strengthening BA after being confronted with death and dying could not be replicated. However, among subjects with no public commitment, those concerned with death and dying scored significantly lower on BA than those not concerned. This effect was especially observed among students classified as sensitizers. Because changes of BA did not correspond with changes of within cell correlations between BA and state anxiety, an alternative explanation of the findings in terms of dissonance theory is put forward.     

Does he sound cooperative? Acoustic correlates of cooperativeness

The sound of the voice has several acoustic features that influence the perception of how cooperative the speaker is. It remains unknown, however, whether these acoustic features are associated with actual cooperative behaviour. This issue is crucial to disentangle whether inferences of traits from voices are based on stereotypes, or facilitate the detection of cooperative partners. The latter is likely due to the pleiotropic effect that testosterone has on both cooperative behaviours and acoustic features. In the present study, we quantified the cooperativeness of native French-speaking men in a one-shot public good game. We also measured mean fundamental frequency, pitch variations, roughness, and breathiness from spontaneous speech recordings of the same men and collected saliva samples to measure their testosterone levels. Our results showed that men with lower-pitched voices and greater pitch variations were more cooperative. However, testosterone did not influence cooperative behaviours or acoustic features. Our finding provides the first evidence of the acoustic correlates of cooperative behaviour. When considered in combination with the literature on the detection of cooperativeness from faces, the results imply that assessment of cooperative behaviour would be improved by simultaneous consideration of visual and auditory cues.     

Does differential social support cause sex differences in bereavement outcome?

A study of a sample of bereaved and married individuals tested the prediction from stress theory that sex differences in bereavement outcome are due to differences in social support extended to the bereaved. Previous research had established that compared to same‐sex married controls, widowers suffer greater health deterioration following the death of a spouse than widows. Although there is some evidence that widows receive more social support than widowers, it has never been tested empirically whether differential social support is responsible for the sex difference in bereavement outcome. Two sets of tests were conducted to examine these hypotheses: first, sex differences in bereavement outcome and in the social support perceived by the bereaved were assessed by means of sex×marital status ANOVAs on depressive symptomatology, loneliness and social support; second, an ANCOVA was used to assess whether the marital status×sex interaction on distress was substantially reduced or eliminated when social support was used as a covariate. Although there was evidence of the expected sex differences in bereavement outcome and social support, there was no evidence that social support mediates the sex differences in bereavement outcome. Copyright © 1999 John Wiley & Sons, Ltd.     

When two paradigms meet: Does evaluative learning extinguish in differential fear conditioning?

Contemporary theories of Pavlovian conditioning propose a distinction between signal learning (SL), in which a conditioned stimulus (CS) becomes a predictor for a biologically significant unconditioned stimulus (US), and evaluative learning (EL), in which the valence of the US is transferred to the CS. This distinction is based largely on the different susceptibilities of EL and SL to extinction. This study compared the extinction of indices of EL (online valence ratings) and SL (US-expectancy ratings and skin conductance responses, SCRs) in a differential fear conditioning design using complex CSs. Only half of the participants gave online valence ratings, allowing us to confirm that online valence measurement did not influence SCRs. In line with the distinction between EL and SL, SCRs extinguished rapidly while valence ratings showed resistance to extinction. US-expectancy ratings, however, were not distinguishable from valence ratings indicating that verbal indicators of EL and SL share a similar time course.     

Does luck have a place in epistemology?

Some epistemologists hold that exploration and elaboration of the nature of luck will allow us to better understand knowledge. I argue this is a mistake.     

Does place attachment affect social well-being?

Although literature yields some insights on the connection between place and well-being, to date the direct influence of place attachment on the dimensions that characterize social well-being has not been explicitly investigated. The present study, conducted on 443 first-year undergraduates, had one main purposes: exploring the influence of place attachment – measured in relation to two different spatial ranges (neighborhood and city) – on the five components of social well-being. Results showed that place attachment globally affects social well-being, but noteworthy distinctions have to be specified both as to the spatial range investigated and the different dimensions of social well-being. Theoretical implications are discussed.     

Components of dental fear in adults?

The functional relatedness between dental fear and multiple other fears was studied in a normative sample of 285 undergraduates. Rachman and Lopatka's work on the inter-dependence of multiple fears within individuals, as well as Lang's bioinformational theory of emotion, provided a theoretical background for this investigation. Fears about social contact, pain, mutilation (e.g. injury, blood, disfigurement), and being closed-in were assessed within the realm of verbal report; they were studied as possible components and/or concomitants of the dental fear construct. Multiple regression analyses with these variables utilized the Dental Fear Survey total score as a criterion variable. Fear of pain was found to be the most significant predictor of dental fear in both males and females. For females only, mutilation fear was the next strongest determinant. Fear of being closed-in was an additional significant dental fear predictor for both sexes. The possible role of social fears in the manifestation of dental fear was not confirmed and awaits further investigation. Results were consistent with the idea that there may often be a moderate degree of functional dependence between dental fear and the other fears identified here.     

Willing and able? Theory of mind,social motivation,and social competence in middle childhood and early adolescence

This study investigated the links between theory of mind, social motivation, and children's social competence in middle childhood and early adolescence. Two hundred and sixty four children (136 girls, 128 boys) aged between 8 and 13 years (M Age = 10.88 years, SD = 1.45) completed theory-of-mind tests and self-report questionnaires measuring social motivation. Teachers rated children's social competence at school. Teacher-rated social competence was associated with individual differences in both theory of mind and children's motivation to develop and maintain social relationships. Results suggest that while individual differences in social motivation and theory of mind are partially overlapping, both theory of mind ability and social motivation contribute to successful social interaction at school.     

Does supervision by a lifeguard make a difference in rule violations? Effects of lifeguards' scanning.

Systematic observations were made of five lifeguards at indoor public swimming pools. Scanning by lifeguards was associated with lower incidences of rule violations by swimmers. Greater numbers of lifeguards patrolling the pool areas tended to reduce violations. Rules violations tended to be fewer when adult-to-child ratios were low, suggesting that monitoring by a parent or an adult may encourage rule compliance.     

Does social identification harm or serve as a buffer? The impact of social identification on anger after experiencing social discrimination

Research on targets' affective reactions to social discrimination has not yet addressed self- and other-directed anger at the same time. Four studies tested the hypothesis that the perceived cause of negative feedback moderates the impact of social identification on self-directed anger. In Studies 1 and 2, high levels of social identification led to less self-directed anger when negative feedback was attributed to social discrimination but not when it was attributed either to other external causes or internally. In Study 3, a cross-lagged design showed that higher identification led to less self-directed anger when negative feedback was attributed to social discrimination but not the other way around. This effect was found using scenarios (Studies 1-3) and also when using the recollection of personal experiences to manipulate attribution (Study 4). These results indicate that following social discrimination, social identification protects the self and does not increase individual vulnerability.