Theories of Types and Names with Positive Stratified Comprehension

We introduce a certain extension of -calculus, and show that it has the Church-Rosser property. The associated open-term extensional combinatory algebra is used as a basis to construct models for theories of Explict Mathematics (formulated in the language of "types and names") with positive stratified comprehension. In such models, types are interpreted as collections of solutions (of terms) w.r. to a set of numerals. Exploiting extensionality, we prove some consistency results for special ontological axioms which are refutable under elementary comprehension.     

Longitudinal relations among perceived parental warmth,self-esteem and social behaviours from middle childhood to early adolescence in China: Disentangling between- and within-person associations

Although several studies have addressed the relations between perceived parental warmth and social behaviours, few have distinguished their between- and within-person effects or explored their within-person mediating mechanisms. This study examined the transactional relations among perceived parental warmth (i.e. maternal warmth and paternal warmth), children's self-esteem and children's positive/negative social behaviours (i.e. prosocial behaviour and delinquent behaviour) along with the mediating role of self-esteem after disentangling between- and within-person effects. A total of 4315 Chinese elementary children (44.9% girls; M_age = 9.93 years, SD = 0.73) completed relevant measures on four occasions employing 6-month intervals. Results of random-intercept cross-lagged panel models showed that (a) perceived parental warmth reciprocally and positively predicted prosocial behaviour and self-esteem; (b) perceived paternal warmth reciprocally and negatively predicted delinquent behaviour; (c) self-esteem reciprocally predicted prosocial and delinquent behaviour; (d) perceived maternal warmth reciprocally and positively predicted prosocial behaviour through self-esteem; (e) perceived parental warmth reciprocally and negatively predicted delinquent behaviour through self-esteem; and (f) perceived maternal and paternal warmth differed in their relations with prosocial and delinquent behaviours through self-esteem. These findings illuminated the complicated longitudinal within-person interactions among perceived parental warmth, self-esteem, and social behaviours, the specific mediating mechanism of self-esteem, and the differing results associated with perceived maternal and paternal warmth, all of which yield significant implications for assessments and early interventions aimed to promote positive social behaviour.     

Threat to Ethnic Identity: The Experience of White Afrikaans-Speaking Participants in Postapartheid South Africa

Abstract

The dismantling of apartheid and the postapartheid dispensation had far-reaching implications for all the citizens of South Africa. In an urban sample of White Afrikaans-speaking South Africans (Afrikaners) in postapartheid South Africa, the authors investigated perceptions of threat to ethnic identity, as well as correlates of those perceptions. The respondents experienced threat on 2 levels: The 1st was distinctive continuity, the concern that their ethnic group would not continue as a distinctive group in society. The 2nd was the evaluative dimension of ethnic identity (i.e., well-being), the concern that group membership would no longer contribute to positive self-esteem. The respondents experienced greater threat on the 2nd level, reflecting predominantly negative experiences as White Afrikaans-speaking persons in postapartheid South Africa. A high threat perception on the 2nd level was associated with (a) a perception of other groups' negative evaluations of their ethnic group, (b) negative attitudes toward political changes, and (c) perceptions of illegitimacy and instability of the postapartheid political system. The respondents who felt that Afrikaners would not continue as a distinctive group in society had a more positive attitude toward the sociopolitical changes, did not show strong ethnic identification, and had a negative collective self-esteem. They were also politically more liberal. Those findings are discussed in relation to theoretical expectations.     

Self-Esteem and In-Group Bias Among Members of a Religious Social Category

Abstract

In a sample of New Zealand university students, the author extended earlier research into the relationship between self-esteem and intergroup discrimination. He found no support for the hypothesis that social-category members (i.e., Christians) experience an elevation in the domain of self-esteem (i.e., religious self-esteem) judged as more relevant to the in-group after evaluations favoring the in-group. Regardless of whether the evaluation targets behaved positively or negatively, the respondents in the experimental condition evaluated in-group (Christian) targets more highly than out-group (Atheist) targets. After evaluations favoring the in-group, the respondents did not experience an elevation of religious self-esteem, global self-esteem, or mathematical self-esteem (judged as less relevant to the in-group).     

Liking for positive words and icons moderates the association between implicit and explicit self-esteem

Whereas explicit self-esteem (ESE) refers to a conscious self-evaluation, implicit self-esteem (ISE) refers to non-conscious self-evaluation. Presumably, ISE and ESE are based on different mental processes — the experiential system and the rational system, respectively (Epstein, 1994) as well as different experiences (DeHart, Pelham, & Tennen, 2006). Two studies showed that participants who more strongly preferred positive icons and positive words showed a stronger association between ISE and ESE, presumably because they are highly willing to trust their intuitions. Because the major motive of the experiential system is the hedonic principle — pursuing positive affect and avoiding negative affect (Epstein, 2010), we argue that people's reactions to unambiguously positive stimuli should reflect their reliance on their intuition. In addition, we suggest that a better understanding of intuitiveness may yield important insights into the nature of ISE and ESE.     

Is objectification always harmful? Reactions to objectifying images and feedback as a function of self-objectification and mortality salience

From the perspective of terror management theory, awareness of death induces a need for validation of important values. Thus, for women who place a high value on their appearance (e.g., high self-objectifiers), mortality salience should increase positive reactions to objectifying experiences relative to women who do not highly value appearance. Two studies supported this hypothesis. Self-objectification moderated favorable reactions to objectifying stimuli (Study 1) and state self-esteem in response to an objectifying comment (Study 2) when women were primed with death. Together, the studies illustrate the complexity of reactions to objectification and, by highlighting conditions in which objectification serves a psychological function, help to explain the pervasiveness of the phenomena.     

The Mating Sociometer and Attractive Others: A Double-Edged Sword in Romantic Relationships

Eighty-one participants were recruited to test the sensitivity of the mating sociometer to mate-value feedback in the context of ongoing intimate relationships. Experiences of social rejection/acceptance by attractive opposite-sex confederates were manipulated. The effects of this manipulation on self-esteem, relationship satisfaction and commitment, perceptions of dating alternatives, and friendship-dedication were assessed. Social rejection/acceptance by members of the opposite sex altered relationship satisfaction and commitment; this causal link was amplified by changes in state self-esteem; and these effects were specific to intimate relationships and did not generalize to friendship-dedication. This research supports a domain-specific conceptualization of sociometer theory, extending the theory in important directions.     

Self-esteem,personality and Internet Addiction: A cross-cultural comparison study

Previous work from Germany and Austria highlighted the importance of personality and excessive private Internet usage for Internet Addiction (IA). In a cross-cultural approach we tried to replicate a negative association between IA and the personality trait of self-directedness in Bulgaria, Germany, Spain, Colombia, China, Taiwan and Sweden and as well the finding that persons with a damaged self-esteem have a higher proclivity for becoming Internet addicted in Bulgaria, Spain, Germany and Colombia. In total N = 989 took part in the study. Results show that the personality dimension self-directedness was negatively correlated to the IA score of the participants in all samples. In contrast, no interaction effect between implicit and explicit self-esteem on IA could be observed.     

青少年父母、同伴依恋与社会适应性的关系

对519个初、高中生施测青少年父母同伴依恋量表(IPPA)、自尊(SES)、中学生社会适应性量表,以探讨青少年父母、同伴依恋的现状,以及它们和自尊、社会适应之间的关系.结果表明:(1)青少年总体依恋质量较高.同伴的依恋质量高于父母依恋质量.(2)青少年的父母依恋在性别上没有差异;女生的同伴依恋得分显著高于男生.父母依恋的发展呈先降后升的趋势,初一年级最高,初三年级最低;同伴依恋呈先升后降再升趋势,但未见显著差异.(3)父亲依恋对青少年的心理弹性预测力最强,母亲依恋对心理优势感预测力最强,同伴依恋对人际适应性预测力最强.这种影响通过自尊的部分中介作用而实现.     

The Effect of Locus of Control on University Students' Mental Health: Possible Mediation through Self-Esteem and Coping

The purpose of this study was to examine the effect of locus of control on university students' mental health and to examine possible mediational roles of self-esteem and coping. A total of 418 university students completed Rotters I-E Scale, Self-liking/self-competence Scale, Endlers Coping with Stressful Situations Scale and Depression, Anxiety and Stress Scale. The results showed that external locus of control, lower self-liking and self-competence, as well as less problem-focused and more emotion-focused coping predict more symptoms of depression, anxiety, and stress in university students. However, mediational analysis revealed that the effect of locus of control was fully mediated by self-esteem and coping, with self-liking and emotion-focused coping being the strongest mediators. Results suggest that beliefs about control affect beliefs about one's self-worth and coping strategies, which in turn can affect one's mental health.