Response inhibition in the parametric go/no-go task and its relation to impulsivity and subclinical psychopathy

The current study utilizes the parametric go/no-go task (PGNG), a task that examines changes in inhibitory performance as executive function load increases, to examine the link between psychopathic traits, impulsivity, and response inhibition in a cohort of healthy participants. The results show that as executive function load increased, inhibitory ability decreased. High scores on the Cognitive Complexity subscale of the Barratt Impulsivity Scale (BIS–11) predict poor inhibitory ability in the PGNG. Similarly, high scores on the Psychopathy Personality Inventory–Revised (PPI–R) Blame Externalization subscale predict response inhibition deficits in the PGNG, which loads more on the executive functions than the standard go/no-go task. The remaining BIS–11 as well as PPI–R subscales did not interact with inhibitory performance in the PGNG highlighting the specificity of associations between aspects of personality and impulsivity with inhibitory performance as cognitive load is increased. These data point towards the sensitivity of the PGNG in studying response inhibition in the context of highly impulsive populations and its utility as a measure of impulsivity.     

Predicting Romantic Interest at Zero Acquaintance: Evidence of Sex Differences in Trait Perception but Not in Predictors of Interest

We evaluated five competing hypotheses about what predicts romantic interest. Through a half‐block quasi‐experimental design, a large sample of young adults (i.e. responders; n = 335) viewed videos of opposite‐sex persons (i.e. targets) talking about themselves, and responders rated the targets' traits and their romantic interest in the target. We tested whether similarity, dissimilarity or overall trait levels on mate value, physical attractiveness, life history strategy and the Big Five personality factors predicted romantic interest at zero acquaintance and whether sex acted as a moderator. We tested the responders' individual perception of the targets' traits, in addition to the targets' own self‐reported trait levels and a consensus rating of the targets made by the responders. We used polynomial regression with response surface analysis within multilevel modelling to test support for each of the hypotheses. Results suggest a large sex difference in trait perception; when women rated men, they agreed in their perception more often than when men rated women. However, as a predictor of romantic interest, there were no sex differences. Only the responders' perception of the targets' physical attractiveness predicted romantic interest; specifically, responders' who rated the targets' physical attractiveness as higher than themselves reported more romantic interest. Copyright © 2017 European Association of Personality Psychology     

Association between tryptophan hydroxylase 2 gene polymorphism and completed suicide

The association between suicide and a single nucleotide polymorphism (rs1386483) was examined in the recently identified tryptophan hydroxylase 2 (TPH2) gene. Blood samples of 143 suicide victims and 162 age- and sex-matched controls were examined. The frequency of the TT genotype in the TPH2 polymorphism was higher in suicide victims than in controls (17.5% vs. 8.6%; p = 0.02), particularly in those with a history of repeated suicide attempts (53.3% vs. 8.6%; p < 0.0001). The examined TPH2 polymorphism was found to be associated with suicide. This genetic marker may be particularly important in understanding risk of multiple suicide attempts. Further analyses are needed to confirm these results.     

Keeping the Body in Mind: The Influence of Body Esteem and Body Boundary Aberration on Consumer Beliefs and Purchase Intentions

This research explores the influence of consumers’ body‐related information on beliefs and purchase intentions toward products for which the consumption experience is significantly and directly determined by body‐related information (e.g., feel, fit, sense of safety) when the products are bought in body‐absent purchase environments such as the Internet. We examine the effects of consumers’ body esteem (i.e., like or dislike of one's body) and body boundary aberration (variation in the perceived location of the edges of one's body) in the context of apparel purchases that are made on the Internet. Body esteem had a positive influence on involvement with apparel, and body boundary aberration had a negative influence on consumers’ overall concern with the fit of apparel. Involvement with apparel and overall concern with fit, in turn, significantly influenced consumers’ intentions to purchase apparel online. Consequently, consumers with high body esteem were less likely to buy on the Internet and those with high body boundary aberration were more likely to buy.     

Perfectionism and Depression Among Low-Income Chronically Ill African American and White Adolescents and Their Maternal Parent

Most research on perfectionism is based on convenience samples of university students or clinically distressed samples, and therefore relatively less is known about the development and implications of perfectionism for other groups. In this study, we examined perfectionism and depression in low-income African American (n = 39) and White (n = 55) adolescents with chronic illnesses (most with diabetes, asthma, and/or hypertension) and their primary parents. We specifically examined the association between parent and child perfectionism, and the link between perfectionism and depression in both groups. The African American adolescents reported significantly more maladaptive perfectionism than did the White adolescents, and the African American parents reported significantly higher scores on depression than did the White parents. Correlations and regression analyses revealed similarities and differences in perfectionism-depression associations that might be explained in light of cultural differences and the unique physical and emotional challenges faced by youth with chronic illnesses. The word “parent” in this study is used to represent a parent or other adult who was identified as a primary caregiver for the adolescent.     

Teachers' and mothers' academic achievement expectations for learning disabled children

The present study investigated teachers and mothers academic achievement expectations for learning disabled and normally achieving grade 3 children. Both groups had similar WISC-R mean Full Scale IQ scores, ages and socioeconomic backgrounds. It was found that teachers and mothers had significantly lower academic expectations for learning disabled children. The results are discussed in terms of the importance of positive affective development for learning disabled children and the need for more encouraging attitudes on the part of teachers and parents.     

Plato's dream hypothesis: A meta-communicative statement

Continental Philosophy Review -     

Natural deduction rules for English

A system of natural deduction rules is proposed for an idealized form of English. The rules presuppose a sharp distinction between proper names and such expressions as the c, a (an) c, some c, any c, and every c, where c represents a common noun. These latter expressions are called quantifiers, and other expressions of the form that c or that c itself, are called quantified terms. Introduction and elimination rules are presented for any, every, some, a (an), and the, and also for any which, every which, and so on, as well as rules for some other concepts. One outcome of these rules is that Every man loves some woman is implied by, but does not imply, Some woman is loved by every man, since the latter is taken to mean the same as Some woman is loved by all men. Also, Jack knows which woman came is implied by Some woman is known by Jack to have come, but not by Jack knows that some woman came.     

Estimation of latent ability and item parameters when there are omitted responses

Omitted items cannot properly be treated as wrong when estimating ability and item parameters. A convenient method for utilizing the information provided by omissions is presented. Theoretical and empirical justifications are presented for the estimates obtained by the new method.Research reported in this paper has been supported by grant GB-32781X from National Science Foundation.