Quantitative relations between avoidance behavior and pituitary-adrenal cortical activity

The rate at which monkeys pressed a lever and avoided shocks was manipulated in several ways. Measurements were also made of their plasma levels of 17-hydroxycorticosteroids. The rate at which the animals pressed the lever and the frequency with which they received shocks were both implicated as determiners of the steroid levels.     

The Incremental Validity of the Trait Emotional Intelligence Questionnaire (TEIQue): A Systematic Review and Meta-Analysis

A criticism leveled against the conceptualization of emotional intelligence (EI) as a personality trait is that it overlaps considerably with the higher order personality dimensions and, therefore, has weak utility. To investigate this criticism, a systematic review and meta-analysis were conducted to synthesize the literature examining the incremental validity of the 2 adult self-report forms of the Trait Emotional Intelligence Questionnaire (TEIQue). Twenty-four articles reporting 114 incremental validity analyses of the TEIQue were reviewed according to the studies' methodological features. Additionally, data from 18 studies (providing 105 effect sizes) were pooled in a meta-analysis. Results suggest that the TEIQue consistently explains incremental variance in criteria pertaining to different areas of functioning, beyond higher order personality dimensions and other emotion-related variables. The pooled effect size was relatively small, but statistically and practically significant (ΔR² = .06, SE = .0116; 95% CI [.03, .08]). The number of covariates controlled for, the form of the TEIQue, and the focus on higher order personality dimensions versus other individual-difference constructs as baseline predictors did not affect the effect size. Analyses conducted at the factor level indicated that the incremental contribution is mainly due to the well-being and self-control factors of trait EI. Methodological issues and directions for future research are discussed.     

Sex Differences in Judgments of Social Desirability

This study evaluates sex differences in the perceived desirability of personality behaviors and beliefs. Men and women (N = 149, M_age = 18.7) judged the social desirability scale values (SDSVs) of 150 personality statements as applied either to a male target or a female target. For comparison, some estimated SDSVs with no target sex specified. A separate sample of 537 respondents endorsed the 150 items via self‐report. Raters showed a high consensus in their SDSV judgments within conditions (α = .86 to .90) and no sex‐of‐rater effects across conditions. Substantial sex‐of‐target effects (p < .001), however, revealed many behaviors that were viewed as desirable for one sex but not for the other. The behaviors seen as more (less) desirable when applied to men rather than to women were endorsed more (less) by men than by women in the respondent sample. Similar results were found when no target sex was specified for the SDSV ratings, presumably because judges evaluated the behaviors as applied to a target of their own sex. The present results have important implications for the measurement and reporting of SDSVs, the evaluation of substance versus style in self‐reports, and the construction of desirability‐reduced personality inventories.     

Similarity effects in visual working memory

Perceptual similarity is an important property of multiple stimuli. Its computation supports a wide range of cognitive functions, including reasoning, categorization, and memory recognition. It is important, therefore, to determine why previous research has found conflicting effects of inter-item similarity on visual working memory. Studies reporting a similarity advantage have used simple stimuli whose similarity varied along a featural continuum. Studies reporting a similarity disadvantage have used complex stimuli from either a single or multiple categories. To elucidate stimulus conditions for similarity effects in visual working memory, we tested memory for complex stimuli (faces) whose similarity varied along a morph continuum. Participants encoded 3 morphs generated from a single face identity in the similar condition, or 3 morphs generated from different face identities in the dissimilar condition. After a brief delay, a test face appeared at one of the encoding locations for participants to make a same/different judgment. Two experiments showed that similarity enhanced memory accuracy without changing the response criterion. These findings support previous computational models that incorporate featural variance as a component of working memory load. They delineate limitations of models that emphasize cortical resources or response decisions.     

Perceptual expertise improves category detection in natural scenes

There is much debate about how detection, categorization, and within-category identification relate to one another during object recognition. Whether these tasks rely on partially shared perceptual mechanisms may be determined by testing whether training on one of these tasks facilitates performance on another. In the present study we asked whether expertise in discriminating objects improves the detection of these objects in naturalistic scenes. Self-proclaimed car experts (N = 34) performed a car discrimination task to establish their level of expertise, followed by a visual search task where they were asked to detect cars and people in hundreds of photographs of natural scenes. Results revealed that expertise in discriminating cars was strongly correlated with car detection accuracy. This effect was specific to objects of expertise, as there was no influence of car expertise on person detection. These results indicate a close link between object discrimination and object detection performance, which we interpret as reflecting partially shared perceptual mechanisms and neural representations underlying these tasks: the increased sensitivity of the visual system for objects of expertise – as a result of extensive discrimination training – may benefit both the discrimination and the detection of these objects. Alternative interpretations are also discussed.     

Investigating the Perceptions of Intellectual Diversity Among Socially Conservative Christian Seniors at Elite U.S. Colleges

This study investigated the perceptions of intellectual diversity at elite U.S. universities through the lens of the socially conservative Christian senior. Closely aligned with the principle of academic freedom, intellectual diversity is a foundational value putatively espoused by most if not all colleges and universities in the US. Although studies have consistently shown a professorate that is overwhelmingly Democratic and ideologically left-of-center, many scholars deny that any systematic bias exists. Research has shown a correlation between commitment to Christian/conservative values and perception of professor bias. Using hierarchical generalized linear modeling (HGLM) on a subset of the nationally representative sample (N = 2,789) of “very high” institutions, this current study found corroborative evidence that socially conservative Christian students were disproportionately “dissatisfied” or “very dissatisfied” with their institutions’ respect for the expression of diverse beliefs. Generalized findings suggest that systematic bias vis-à-vis the expression of diverse beliefs exists at elite U.S. colleges. The discussion begins by situating intellectual diversity within its historical and contemporary contexts.     

Keeping Up with the Joneses: Neighbourhood Wealth and Hypertension

Although individuals are known to be affected by concerns about relative position, little research investigates how neighbors’ wealth affects one’s hypertension risks. This paper investigates the relationship between neighborhood wealth and hypertension using both self-reported hypertension and objective hypertension. I find that self-reported hypertension rate substantially underestimates objectively measured hypertension rate. Consequently, while there is a positive, statistically significant relationship between neighborhood wealth and hypertension when using self-reported hypertension, the results based on measured hypertension data differ substantially, with the relationship only observed for people aged 55–65 but not for younger or older age groups. There is also evidence of a positive relationship between continuous blood pressure and neighborhood wealth for adult people (aged 30 or older).     

A Correlational Study of Creativity,Happiness, Motivation,and Stress from Creative Pursuits

This study examined the relationship of creative capacity with happiness, affect, motivation, and stress from creative pursuits using a sample of 420 students. In addition, it tested whether a relationship existed between overall creative capacity and specific styles or approaches to creative expression. A composite creative capacity score was derived from four creative capacity measures. Creative capacity was not significantly correlated with happiness, but it correlated significantly with positive and negative affect scales and with their absolute sum. Creative capacity correlated highest with intrinsic motivation (IM) among all variables. Creative capacity and IM correlated similarly in direction and magnitude with creativity styles subscales of Belief in Unconscious Processes, Use of Techniques, and Use of Senses, and negative correlations with the Use of People and Final Product Orientation Subscales.