Are Mexican American Adolescents at Greater Risk of Suicidal Behaviors?

A reexamination of ethnicity as a risk factor for adolescent suicidal behavior, focusing on whether Mexican American youths are at increased risk, was undertaken. Data from a sample of 4,175 African, European, and Mexican Americans, aged 11-17, are presented. We examined lifetime attempts and past year attempts, thoughts, and plans. Odds ratios, adjusting for covariates, indicate no differences between European and Mexican Americans on past year thoughts, plans, or attempts or lifetime attempts. Although some studies have reported Mexican American youths are at increased risk, we did not find any differences. Possible explanations for disparate results across studies are discussed, in particular methods effects.     

LTP induction modifies functional relationship among hippocampal neurons

To obtain evidence linking long-term potentiation (LTP) and memory, we examined whether LTP induction modifies functional relationship among neurons in the rat hippocampus. In contrast to neurons in low-frequency stimulated or AP5-treated slices, LTP induction altered 'functional connectivity,' as defined by the degree of synchronous firing, among simultaneously recorded neurons in the CA3 region. Interestingly, functional connectivity changed bidirectionally so that the total sum of functional connectivity remained constant. These results demonstrate LTP-induced changes in neuronal functional connectivity and suggest the existence of a normalization mechanism for the total sum of functional connectivity.     

Changes in Public Attitudes and Perceptions about Homelessness Between 1990 and 2016

Public attitudes on homelessness can and has influenced policies and services for homeless populations. This study surveyed national public attitudes about homelessness in the 21st century and examined changes in attitudes in the past two decades. An online survey of public attitudes about homelessness was conducted with 541 U.S. adults across 47 states in November 2016 using Amazon Mechanical Turk. Survey results were compared to two public surveys conducted in 1990. Compared to previous surveys, the current sample endorsed more compassion, government support, and liberal attitudes about homelessness. The largest changes were related to increased support for homeless individuals to use public spaces for sleeping and panhandling. When asked about the demographic composition of the homeless population, the contemporary sample tended to overestimate the proportions who were young and racial/ethnic minorities, while underestimating the proportions who were married, or had mental health or substance abuse problems. Together, the findings suggest there has been an increase in compassion and liberal attitudes toward homelessness in the past two decades. Greater support for homeless individuals during an era of economic recessions and governmental homeless initiatives presents opportunities for new public health approaches to address homelessness.     

类别使用目的对类别典型性效应的影响

采用ERPs技术,对不同类别使用目的的典型性效应进行研究。通过分类方式控制类别使用目的,分别采用包含法和排除法对材料进行类属判断。结果表明:(1)排除组反应时显著短于包含组,表明两种条件下被试可能采取了不同的认知加工策略;(2)在认知加工早期阶段210ms-310ms,包含组引发了更大的N2波幅,这说明类别使用目的对类别典型性表征的影响在早期认知加工阶段就已有所表现。(3)370ms-470ms阶段,典型性样例在排除组引发了比包含组更大的N400;表明类别使用目的影响了典型性表征的加工。     

Experiencing menopause in the context of cancer: Women’s constructions of gendered subjectivities

Objective: Many women experience premature menopause following cancer treatment, accompanied by psychological distress, and poor health-related quality of life. In this qualitative study, we examined how women construct their gendered subjectivities – their sense of self as a woman – in the context of premature menopause after cancer.

Design: We analysed data from open-ended survey items and semi-structured interviews with women who had experienced cancer. Six hundred and ninety-five women completed the online survey and 61 took part in a semi-structured interview. A thematic decomposition was conducted to identify the subject positions associated with menopause taken up by the women.

Results: Three overall themes were identified: ‘The Incomplete Woman,’ ‘The Abject, Asexual Woman’ and ‘Out of Time and Social Isolation.’ Menopause was predominantly constructed as a negative experience, similar to older post-menopausal women and dissimilar to peers, contributing to experiences of social isolation. Menopause also signified the presence of a medically diagnosed cancer condition, and uncertainty around cancer prognosis.

Conclusion: It is important for cancer support group leaders and other service providers to be sensitive to women’s negotiation of menopause following cancer, in the context of broader cultural constructions, in order to provide appropriate information and support.     

Differential relations of grandiose narcissism and vulnerable narcissism to emotion dysregulation: Self‐esteem matters

The present study aims to explore the effects of grandiose and vulnerable narcissism on emotion dysregulation and examine the mediating role of self‐esteem on these associations. Undergraduates (N = 426) completed self‐report measurements on grandiose narcissism, vulnerable narcissism, self‐esteem and emotion dysregulation. Correlation analyses indicated that grandiose narcissism was negatively correlated with emotion dysregulation, while vulnerable narcissism was positively correlated with emotion dysregulation. Moreover, mediational analyses revealed that self‐esteem fully mediated the association between grandiose narcissism and emotion dysregulation, and partially mediated the association between vulnerable narcissism and emotion dysregulation. The present study highlights the importance of self‐esteem and deepens the understanding of the associations between the two forms of narcissism and emotion dysregulation.     

A challenge to current models of past tense inflection: the impact of phonotactics

Is past tense production better modelled by a Single Mechanism or a Words and Rules model? We present data concerning a phenomenon that has not been considered by either model-regular past tense verbs with contrasting phonotactics. One set of verbs contains clusters at the inflected verb end that also occur in monomorphemic words ('monomorphemically legal clusters', MLC) whereas the other has clusters that can only occur in inflected forms ('monomorphemically illegal clusters', MIC). We argue that if children apply a morphological rule, phonotactics will not affect performance. Conversely, if children store past tense forms, they will perform better on verbs with MLCs because these clusters are more frequent. We investigated three populations--typically developing children, Grammatical-SLI (G-SLI) and Williams Syndrome (WS)--using past tense elicitation tasks. In Experiment 1 we reanalyse data from van der Lely and Ullman [van der Lely, H. K. J. & Ullman, M. (2001). Past tense morphology in specifically language impaired and normally developing children. Language and Cognitive Processes, 16: 177-217] and show that G-SLI children perform better on MLC verbs, whereas for typically developing children phonotactics do not affect performance. In Experiment 2 we replicate these findings in new groups of G-SLI and typically developing children. In Experiment 3 we reanalyse data from Thomas et al. [Thomas, M. S. C., Grant, J., Barham, Z., Gsodl, M., Laing, E., Lakusta, L., Tyler, L.K., Grice, S., Paterson, S. & Karmiloff-Smith, A. (2001) Past tense formation in Williams Syndrome. Language and Cognitive Processes, 16: 143-176] and show that phonotactics do not affect performance in individuals with WS. We argue that the results elucidate the underlying nature of morphology in these populations, and are better accommodated within a Words and Rules model of past tense acquisition.     

Cell phone use and visual attention

The purpose of the present study was to evaluate how much cell phones and just speaking (similar to speaking to someone in the car vs a hands-free cell phone task) interfere with visual attention skills as might be required in a driving situation. Influence of cell phones on attention has been noted but little research has been completed. Licensed adult drivers were divided into three groups (ns = 15) with all subjects taking the Connors Continuous Performance Test II. Group 1 performed without any distractions: those in Group 2 performed with someone in the same room talking to them: Group 3 engaged in a cell phone conversation during the task. Overall, there were substantial differences among groups on all variables, but primarily between the control group and the two experimental groups. While the cell phone group had lower mean scores than the talking group overall, the differences were not significant. Thus, while cell phones were distracting to visual attention functions on the Connors task, they were not more distracting than a similarly active conversation without a cell phone.     

Developing a scale of self-efficacy in personal relationships for adolescents

This study developed a scale of self-efficacy in personal relationships for adolescents and examined its reliability and the validity. The 40 items assessing tendencies theoretically linked to self-efficacy in personal relationships were administered to 344 junior and high school students. 207 high school students also were administered the Shimoda Personality Inventory. Three factors (Self-confidence in Personal Relationship, Trust in Friends, and Trust by Friends) were extracted by principal components analysis. The coefficient alpha reliabilities of these subscales were .90, .89. and .87. The validity was supported by correlations between the Total score of self-efficacy and the SPI subscales of Autistic trait -.53, Nervous Character trait -.13, Self-uncertain trait -.39, and Syntonic trait .57.