Prevalence of Nonsuicidal Self‐Injury in Nonclinical Samples: Systematic Review,Meta‐Analysis and Meta‐Regression

Published prevalence estimates of nonsuicidal self‐injury (NSSI) among nonclinical samples are highly heterogeneous, raising concerns about their reliability and hindering attempts to explore the alleged increase in NSSI over time. Accordingly, the objectives of this study were to investigate the influence of methodological factors on heterogeneity in NSSI prevalence estimates, explore changes over time, and estimate overall international NSSI prevalence. Results showed that methodological factors contributed over half (51.6%) of the heterogeneity in prevalence estimates, and, after adjusting for these factors, NSSI prevalence did not increase over time. Overall, pooled NSSI prevalence was 17.2% among adolescents, 13.4% among young adults, and 5.5% among adults. Clearly, development of standardized methodology in NSSI research is crucial if accurate estimates are desired.     

Influence of dorsolateral periaqueductal grey (dlPAG) lesions on contextual conditioning with massed and distributed shock

Three experiments investigated the conditions under which electrolytic lesions of the dorsolateral periaqueductal grey (dlPAG) facilitate conditioned defensive freezing in the rat ( Rattus norvegicus ). Experiment 1 found that dlPAG lesions placed before context-shock pairings facilitated conditioned defensive freezing with massed but not distributed shock. No such effect was found in Experiment 2, when the lesions were placed after context-shock pairings. Experiment 3 found that dlPAG lesions facilitated subsequent conditioning with massed but not a single shock. In addition, no differences in sensitivity to thermal or shock pain were evident in lesioned and unlesioned rats. Taken together, these results are consistent with the suggestion that dlPAG activation interferes with the processing of contextual cues during association formation.     

Gender Typed Advertisements and Impression Formation: The Role of Chronic and Temporary Accessibility

In this research, we tested the effects of chronic and temporary sources of accessibility on impression formation. Although some research suggests that chronicity amplifies temporary effects because of greater susceptibility to external primes, other research suggests that chronicity masks temporary effects because of redundance. We demonstrate in a thought listing study that in the domain of gender stereotypes, trait stereotypes may be routinely applied by those with a medium or high tendency to stereotype women, making external primes redundant. Based on this redundancy, we proposed that gender stereotypical primes will have little influence on subsequent judgments of those with a medium or high tendency to gender stereotype. In contrast, gender stereotypical primes will result in the classic assimilation effect for those with a low tendency to gender stereotype. We tested these propositions in the domain of female role portrayals in advertising and examined the effect of advertisements that feature women as homemakers (vs. do not feature women) on trait judgments of a target woman whose behaviors are ambiguously described. Results from 2 experiments show that, as predicted by the redundancy hypothesis, judgments of medium and high tendency to stereotype participants are not affected by advertisements portraying homemakers. Also as expected, judgments of low tendency to stereotype participants are assimilated to the homemaker prime. These results hold across tendency to trait stereotype (Experiment 1) and tendency to role stereotype (Experiment 2) and for trait judgments as well as gift choice. Theoretical and practical implications of these findings are discussed.     

Speaking two “Languages” in America: A semantic space analysis of how presidential candidates and their supporters represent abstract political concepts differently

In this article we report a computational semantic analysis of the presidential candidates’ speeches in the two major political parties in the USA. In Study One, we modeled the political semantic spaces as a function of party, candidate, and time of election, and findings revealed patterns of differences in the semantic representation of key political concepts and the changing landscapes in which the presidential candidates align or misalign with their parties in terms of the representation and organization of politically central concepts. Our models further showed that the 2016 US presidential nominees had distinct conceptual representations from those of previous election years, and these patterns did not necessarily align with their respective political parties’ average representation of the key political concepts. In Study Two, structural equation modeling demonstrated that reported political engagement among voters differentially predicted reported likelihoods of voting for Clinton versus Trump in the 2016 presidential election. Study Three indicated that Republicans and Democrats showed distinct, systematic word association patterns for the same concepts/terms, which could be reliably distinguished using machine learning methods. These studies suggest that given an individual’s political beliefs, we can make reliable predictions about how they understand words, and given how an individual understands those same words, we can also predict an individual’s political beliefs. Our study provides a bridge between semantic space models and abstract representations of political concepts on the one hand, and the representations of political concepts and citizens’ voting behavior on the other.     

The K-factor: Individual differences in life history strategy

Until recently, variations in life history strategy were studied exclusively at the species level. Although this domain of study has been extended to examine systematic differences in life history strategy among various human ethnic groupings, more recent evolutionary theories of human development and related behavioral genetic work imply substantial within-group individual variation in life history strategy. We constructed a latent variable model identifying a single common factor, denoted as K, which underlies a variety of otherwise disparate life history parameters. This “K-Factor” loaded 0.36 on childhood attachment to the biological father, −0.36 on childhood attachment to any non-biological father figure, 0.38 on adult romantic partner attachment, −0.51 on mating effort, −0.58 on Machiavellianism, and −0.41 on risk propensity. The bivariate correlations of the K-factor with higher-order personality factors were statistically significant, −0.24 with “Big Neuroticism” and −0.67 with “Big Psychoticism”, and approached significance, correlating 0.12, with “Big Extraversion”. The K-factor appears to be an underappreciated individual difference variable of major importance to human development.     

Order or disorder? Impaired Hebb learning in dyslexia

The present study offers an integrative account proposing that dyslexia and its various associated cognitive impairments reflect an underlying deficit in the long-term learning of serial-order information, here operationalized as Hebb repetition learning. In nondyslexic individuals, improved immediate serial recall is typically observed when one particular sequence of items is repeated across an experimental session, a phenomenon known as the Hebb repetition effect. Starting from the critical observation that individuals with dyslexia seem to be selectively impaired in cognitive tasks that involve processing of serial order, the present study is the first to test and confirm the hypothesis that the Hebb repetition effect is affected in dyslexia, even for nonverbal modalities. We present a theoretical framework in which the Hebb repetition effect is assumed to be a laboratory analogue of naturalistic word learning, on the basis of which we argue that dyslexia is characterized by an impairment of serial-order learning that affects language learning and processing.     

The gendering of heterosexual religious young adults’ imagined futures

This article draws from a mixed-methods project that examined religion, youth, gender, and sexuality among young women and men aged between 18 and 25, from various religious traditions, and living in the UK. It charts how unmarried heterosexuals imagined their future lives in relation to marriage and parenthood. We deploy conceptual literature on ‘imagined future’, which is under-used in the sociology of religion, to explore what difference, if any, religious belonging makes to the futures the participants imagined. We assert that religion is part of their cultural tapestry, which broadly informed their values and actions. In other words, religion, as a component of culture, provides a ‘toolkit’ which they used in imagining futures that they deemed meaningful. This article contributes significantly to literature on gender and religious cultures and imagined future, highlighting the complex and interweaving role religion played in the way young adults in this study imagined their future gendered lives.