Effects of differential reinforcement and task difficulty on preschoolers' compliance with teacher instructions

Preschool children in day schools were given instructions to complete certain tasks. Four tasks were given of two types and two levels of difficulty. In each condition compliance with at most one instruction (one task) was reinforced. In two similar experiments, with six children, general results were: compliance with easy tasks was maintained without reinforcement when any task compliance was reinforced; compliance for hard tasks remained high only when that specific task was reinforced. Thus, generalization of compliance with instructions varied with task difficulty. The setting and procedure for both studies were designed to reduce possible coercive features of laboratory studies of generalized performance. Results show generalized performance can occur under naturalistic conditions. The effect of effort, as a response characteristic affecting generalized performance, is discussed.     

Victim and Perpetrator Groups' Responses to the Canadian Government's Apology for the Head Tax on Chinese Immigrants and the Moderating Influence of Collective Guilt

European and Chinese Canadians' perceptions and expectations of the Canadian government's apology for the head tax placed on Chinese immigrants during the early twentieth century were examined, along with Chinese Canadians' willingness to forgive the transgression. Among both European and Chinese Canadians, beliefs about the importance attributed to the event and perception of the apology as deserved and sincere heightened expectations of improved intergroup relations. Collective guilt acceptance among European Canadians heightened the relation between perceived sincerity and positive expectations, whereas collective guilt assignment by Chinese Canadians heightened the relation between sincerity and forgiveness. A one‐year follow‐up of whether Chinese Canadians were equally satisfied with the apology indicated that their willingness to grant forgiveness had waned, and although on the whole expectations of improved relations were met, those who assigned more collective guilt were less convinced. Intergroup apologies and their effectiveness at facilitating intergroup relations are discussed.     

The Buffering Role of Social Support Perceptions in Relation to Eating Disturbances among Women in Abusive Dating Relationships

Abuse is often associated with diminished social support networks, which typically serve to buffer individuals against stress-related outcomes, including eating disorders. The goal of the present study was to examine whether eating disturbances among women in abusive dating relationships varied as function of perceived social support. Although both physical and psychological aggression in women's (N=83) dating relationships was associated with symptomatic dieting and bulimic symptoms, only psychological aggression predicted unique variance. Although psychological aggression was directly related to eating symptoms, support from friends diminished the relation to bulimic symptoms, possibly because such support facilitated women's ability to distract themselves from their abusive situations. In contrast, perceived parental support buffered women in physically abusive relationships from disturbed eating patterns. Thus, depending on the nature of abuse women experienced, social support resources were differentially effective in buffering women from eating disturbances.     

The limits of 'adaptive' coping: well-being and mood reactions to stressors among women in abusive dating relationships

Coping is typically thought to be adaptive if it reduces immediate distress and promotes well-being. However, coping strategies might appear beneficial in a given situation, but when considered in the broader stressor context, those situational benefits may actually undermine well-being. Two studies (N = 473 and N = 80 women) demonstrated that, in the context of psychologically or physically abusive dating relationships, coping orientations were rooted in women's stressor history (prior assault trauma) and elevated emotion-focused and lower problem-focused efforts were predictive of greater depressive symptoms. Yet, in response to a stressor video that acted as a reminder of women's abusive experiences (but not to a stressor video unrelated to abuse), affective benefits (lower hostility, higher positive agency) were associated with abused women's emotion-focused coping endorsements, but were not linked to problem-focused coping. It seems that in some contexts, reduced distress might limit active efforts to alter a dysfunctional situation.     

Rumination: Bridging a gap between forgivingness, vengefulness, and psychological health

It was argued in the present investigation that dispositional forgiveness and vengeance would be differentially related to components of rumination, and thus the mediating role of rumination in their relations with psychological health would also vary. Male and female undergraduates (N = 183) completed questionnaires assessing predispositions toward forgiveness, vengefulness, rumination, depressive affect, and life satisfaction. Regression analyses revealed that higher forgiveness and lower vengefulness were associated with greater psychological health (lower depressive affect; higher life satisfaction). Moreover, the relations between forgiveness (but not vengefulness) and psychological health were partially mediated by the decreased propensity of high forgivers to endorse ruminative brooding. These findings suggest that, although forgiveness and vengeance may be related, their impacts on psychological health reflect distinct ruminative tendencies.     

Living with the unexplained: coping,distress, and depression among women with chronic fatigue syndrome and/or fibromyalgia compared to an autoimmune disorder

Chronic fatigue syndrome (CFS) and fibromyalgia are disabling conditions without objective diagnostic tests, clear-cut treatments, or established etiologies. Those with the disorders are viewed suspiciously, and claims of malingering are common, thus promoting further distress. It was hypothesized in the current study that levels of unsupportive social interactions and the coping styles used among those with CFS/fibromyalgia would be associated with perceived distress and depressive symptoms. Women with CFS/fibromyalgia (n = 39), in fact, reported higher depression scores, greater perceived distress and more frequent unsupportive relationships than healthy women (n = 55), whereas those with a chronic, but medically accepted illness comprising an autoimmune disorder (lupus erythematosus, multiple sclerosis, rheumatoid arthritis; n = 28), displayed intermediate scores. High problem-focused coping was associated with low levels of depression and perceived distress in those with an autoimmune condition. In contrast, although CFS/fibromyalgia was also accompanied by higher depression scores and higher perceived distress, this occurred irrespective of problem-focused coping. It is suggested that because the veracity of ambiguous illnesses is often questioned, this might represent a potent stressor in women with such illnesses, and even coping methods typically thought to be useful in other conditions, are not associated with diminished distress among those with CFS/fibromyalgia.     

Environmental enrichment in male CD-1 mice promotes aggressive behaviors and elevated corticosterone and brain norepinephrine activity in response to a mild stressor

Housing rodents in an enriched environment (EE) has been typically considered to have positive effects on well-being and cognitive functioning of the animals. However, in some strains of mice, EEs have also been reported to elicit aggression and to promote stress-related outcomes. In the current investigation, we examined whether environmental enrichment would elicit aggression among CD-1 male mice and thus sensitize responses to a subsequent mild stressor. It was first observed that mice housed in an EE for 2 weeks displayed more aggressive behaviors than did mice that had been housed in a standard environment (SE). In the second experiment, it was noted that after 4 weeks of EE or SE housing, mice exhibited comparable plasma corticosterone concentrations as well as levels of brain norepinephrine and its metabolite, 3-methoxy-4-hydroxyphenylglycol (MHPG), in the absence of a challenge. However, upon exposure to mild stressor (placement in a novel cage), relative to their SE counterparts, EE mice were more active and displayed higher plasma corticosterone concentrations and enhanced MHPG accumulation in the prefrontal cortex and hippocampus. It seems that enrichment in male CD-1 mice promotes aggression, and may sensitize biological processes, possibly increasing vulnerability to stressor-related outcomes.     

Relations between plasma oxytocin,depressive symptoms and coping strategies in response to a stressor: the impact of social support

Background: Social support can serve as a protective factor against the negative impacts of stressors and may thereby promote well-being. As well, exogenous administration of oxytocin has been tied to diminished stress responses and might also enhance the effects of social support.

Methods/Results: In the current study, conducted among female undergraduate students (N?=?67), higher depressive symptoms were related to lower endorsements of problem-focused coping in response to a psychosocial stressor comprising the Trier Social Stress test (TSST). However, the relation between depressive symptoms and problem-focused coping was absent among participants who had a close female friend present serving as social support prior to the stressor experience. Additionally, endogenous plasma oxytocin levels were related to certain coping strategies being favored (e.g., problem-solving, humor, cognitive distraction, self-blame and support seeking) in response to the psychosocial stressor. However, the strength of these relations varied as a function of whether individuals had social support present or not.

Conclusion: These findings confirm the positive impact of social support in attenuating the relation between depressive symptoms and specific coping methods. The results of this study are consistent with view that oxytocin levels are accompanied by particular stress responses, possibly through the promotion of coping methods endorsed.     

The Moderating Role of Ethnic Identity and Social Support on Relations Between Well‐Being and Academic Performance1

The role of social support and ethnic identity in moderating the effects of factors that may emanate from stereotype threat on academic performance was examined. Depressive and anxiety symptoms of ethnic minority (n = 65) and Euro‐Caucasian students (n = 198) were tracked through their first year of university. Although students' symptoms did not differ at the outset of the year, higher symptoms uniquely evident among ethnic minority students at midyear were associated with poorer final grades, and reduced well‐being was sustained at the end of the year. Social support from friends and fewer unsupportive interactions predicted greater success among ethnic minority students. Although both groups benefited from academic support, such support was perceived as less available to minority students.     

Psychosocial stress evoked by a virtual audience: relation to neuroendocrine activity.

A modified version of the Trier Social Stress Test (TSST) was employed to determine whether exposure to a virtual audience using virtual reality (VR) technology would prompt an increase of neuroendocrine activity comparable to that prompted by a real audience. Following an anticipatory period, participants completed a speech or a speech-plus-math challenge in front of either a virtual audience, a panel of judges they were led to believe was behind a one-way mirror, or an audience comprised of confederates. An additional group that had prepared a speech was simply directed to observe the virtual audience but did not deliver the speech. Finally, a control group completed questionnaires for the duration of the experiment. Cortisol samples were obtained upon arrival to the laboratory, just before the challenge, and 15 and 30 minutes after the task. Participants also completed a measure assessing stressor appraisals of the task before and after the challenge. Anticipation of the task was associated with a modest increase of cortisol levels, and a further rise of cortisol was evident in response to the challenge. The neuroendocrine changes evoked by the virtual audience were comparable to those elicited by the imagined audience (behind the one-way mirror) but less than changes evoked by the panel of confederates. Stressor appraisals were higher post-challenge compared to those reported prior to the task; however, appraisals were similar across each group. These data suggest that VR technology may be amenable to evaluating the impact of psychosocial stressors such as the TSST.