Reciprocal influences between parents' marital problems and adolescent internalizing and externalizing behavior

The present study examines reciprocal associations between marital functioning and adolescent maladjustment using cross-lagged autoregressive models. The research involved 451 early adolescents and their families and used a prospective, longitudinal research design with multi-informant methods. Results indicate that parental conflicts over child rearing predicted adolescent depressive symptoms and delinquency. In turn, these adolescent problems exacerbated parental conflicts over child rearing. Furthermore, conflict over child rearing served as the nexus through which more generalized marital dissatisfaction and adolescent adjustment problems were reciprocally interrelated. This research replicates earlier observations that marital problems intensify adolescent maladjustment and extends the literature by demonstrating that adolescent problems also predict marital conflict and ultimately marital dissatisfaction. In sum, the present study demonstrates that marital dissatisfaction, conflict over child rearing, and early adolescent adjustment difficulties are interwoven in a dynamic family system marked by reciprocity along these dimensions.     

The Mediating Roles of Adolescent Disclosure and Parental Knowledge in the Association Between Parental Warmth and Delinquency Among Korean Adolescents

The purpose of this study was to examine the association between parental warmth and adolescent delinquency, the potential mediating roles of adolescent disclosure and parental knowledge, and gender differences in such association among Korean adolescents. We hypothesized that (1) parental warmth would be significantly and negatively associated with delinquency, (2) adolescent disclosure and parental knowledge would mediate the association between parental warmth and adolescent delinquency, and (3) the association between parental warmth and adolescent delinquency mediated through adolescent disclosure and parental knowledge would be stronger for adolescent girls than boys. Using a sample of 3125 Korean adolescents from nationally representative and longitudinal data (Korea Youth Panel Survey), results from path analyses demonstrated that findings were consistent with US samples, suggesting a negative association between parental warmth and adolescent delinquency. Further, when Korean adolescents perceived parents to be warmer, they were more likely to disclose personal information to their parents. In turn, higher levels of disclosure were associated with higher levels of parental knowledge about their adolescent children’s activities. Finally, tests of gender differences suggested that parental warmth was more closely associated with adolescent disclosure among girls than boys. Results supported a process model through which parents may shape adolescent children’s delinquency.     

Both non-symbolic and symbolic quantity processing are important for arithmetical computation but not for mathematical reasoning

This study investigated whether numerical processing was important for two types of mathematical competence: arithmetical computation and mathematical reasoning. Thousand eight hundred and fifty-seven Chinese primary school children in third through sixth grades took eight computerised tasks: numerical processing (numerosity comparison, digit comparison), arithmetical computation, number series completion, non-verbal matrix reasoning, mental rotation, choice reaction time, and word rhyming. Hierarchical regressions showed that both non-symbolic numerical processing (numerosity comparison) and symbolic numerical processing (digit comparison) were independent predictors of arithmetical computation but neither was a predictor of mathematical reasoning (assessed by number series completion). These findings suggest that the cognitive basis of mathematical performance varies depending on the type of mathematical competence measured.     

Does Positivity Matter? The Impact of Interparental Interactions on Young Adult Conflict Management

The main purpose of our study was to examine the impact of positive inter-parental interactions on the conflict management of young adults. Based on social cognitive theory (SCT), it was hypothesized that exposure to interparental positive interactions would mediate the intergenerational transmission of conflict. The findings only partially supported SCT and provided evidence for intergenerational transmission of conflict. However positivity did not buffer this association. Important contributions of this study include a better theoretical understanding of positivity in relationships and evidence for the intergenerational transmission of positive and negative conflict management tactics. Implications for researchers, clinicians, and educators are presented.     

论风险观念的价值哲学基础

<正>"风险社会"理论的兴起和风险观念的确立,不仅意味着以"核风险、化学产品风险、基因工程风险、生态灾难风险"为代表的越来越多的全球性问题成为当今人类社会发展所必须面对的重大社     

Role of the NO/sGC/PKG signaling pathway of hippocampal CA1 in morphine-induced reward memory

Evidence suggests that the nitric oxide (NO)/soluble guanylyl cyclase (sGC)/cGMP dependent protein kinase (PKG) signaling pathway plays a key role in memory processing, but the actual participation of this signaling cascade in the hippocampal CA1 during morphine-induced reward memory remains unknown. In this study, we investigated the role of the NO/sGC/PKG signaling pathway in the CA1 on morphine-induced reward memory using a conditioned place preference (CPP) paradigm. We found that rats receiving an intraperitoneal (i.p.) injection of 4mg/kg morphine exhibited CPP, whereas rats treated with only 0.2mg/kg morphine failed to produce CPP. Intra-CA1 injection of the neuronal NO synthase (nNOS) inhibitor 7-NI, the sGC inhibitor ODQ or the PKG inhibitor Rp-8-Br-PET-cGMPS had no effect on the acquisition of CPP by 4mg/kg morphine. Intra-CA1 injection of 7-NI blocked the consolidation of CPP induced by 4mg/kg morphine, and this amnesic effect of 7-NI was mimicked by ODQ and Rp-8-Br-PET-cGMPS. Intra-CA1 injection of the NOS substrate L-arg or the sGC activator YC-1 with an ineffective dose of morphine (0.2mg/kg, i.p.) elicited CPP. This response induced by L-arg or YC-1 was reversed by pre-microinjection of Rp-8-Br-PET-cGMPS in the CA1. These results indicated that the activation of the NO/sGC/PKG signaling pathway in the CA1 is necessary for the consolidation of morphine-related reward memory.     

Shear band evolution during large plastic deformation of brittle and ductile metallic glasses

Four monolithic metallic glasses (MMGs) with different plasticities varying from brittle to ductile behavior under unconstrained loading were subjected to small punch testing. All specimens undergo large plastic deformation with multiple cobweb-like shear bands under these conditions. The process of shear band evolution was carefully controlled and investigated. Plasticity of MMGs is characterized by equivalent plastic strain ε* (product of shear band density and critical shear offset). Thus, this article provides an experimental basis for a better understanding of the shear band evolution during plastic deformation of MMGs.