Hemispheric Differences in the Processing of Words Learned Early Versus Later in Childhood

The research investigated whether there are hemispheric differences in processing for words acquired early in childhood (early AoA) and words acquired later in childhood (late AoA). We hypothesized that because of recent evidence suggesting that there is a right hemisphere dominance in early childhood, early AoA words would be represented in the right hemisphere, and late AoA words would be represented in the left hemisphere. This hypothesis differs from an early view that late AoA words would be represented in the left hemisphere, and early AoA words would be represented in both hemispheres (Gazzaniga, 1974). We report two experiments using the divided visual field (DVF) technique. The results showed that there was a right visual field (RVF)/left hemisphere (LH) advantage only for late AoA words. For early AoA words, there was a left visual field (LVF)/right hemisphere advantage (RH). Implications for theories of hemispheric differences in word processing are discussed.     

Spouse marital adjustment and patient dietary adherence in chronic hemodialysis: A Comparison of Afro-Americans and Caucasians

Abstract

This study investigated racial differences in the relationship between spouse marital adjustment and dietary adherence of chronic hemodialysis patients. Sixty-eight adult patients and their spouse were subjects. Fifty-two percent of the patients were Caucasians while 48% were Afro-Americans. Spouses completed the Locke-Marital-Questionnaire (LMQ) and provided demographic data pertaining to their patient spouses. The patients' predialysis potassium levels (indices of food intake compliance) for the previous three months were matched with the respective questionnaires. Afro-American spouses, especially males, evidenced significantly lower marital satisfaction than Caucasian spouses. Afro-American female patients seemed to be most compliant as far as food intake wasconcemed. Although the spouse LMQ score was negatively correlated with interdialysis weight gain. Afro-Americans who generally scored lower on the LMQ did not differ from Caucasians in so far as their adherence to the dietary regimen was concerned. Implications for improving quality of life of hemodialysis couples in general, and Afro-Americans in particular are discussed.     

Impact of alcohol on sexual decision making: Intentions to have unprotected sex

The impact of alcohol on intentions to have sex with a new partner and the antecedents of intentions were investigated in three studies (N = 139, 60, and 218, respectively). In all three studies, respondents were intoxicated or not intoxicated with alcohol and completed measures based on the Theory of Planned Behaviour in relation to having sex whilst imagining him- or her-self in the scenario. The scenario described unprotected sex between two individuals not in an existing relationship. Consistently across studies, intoxication had a significant effect on intentions for men but not for women. Also consistently across studies, affective attitudes were significantly stronger determinants of intentions for women than for men. Alcohol intoxication consistently moderated the impact of affective attitudes on intentions in women but not men, with greater intoxication associated with stronger impacts (Studies 1, 2, and 3). Implications for understanding the impacts of alcohol intoxication on sexual decision making in men and women are discussed.     

Playing Hard‐to‐Get: Manipulating One's Perceived Availability as a Mate

‘Playing hard‐to‐get’ is a mating tactic in which people give the impression that they are ostensibly uninterested to get others to desire them more. This topic has received little attention because of theoretical and methodological limitations of prior work. We present four studies drawn from four different American universities that examined playing hard‐to‐get as part of a supply‐side economics model of dating. In Studies 1a (N = 100) and 1b (N = 491), we identified the tactics that characterize playing hard‐to‐get and how often men and women enact them. In Study 2 (N = 290), we assessed reasons why men and women play hard‐to‐get along with the personality traits associated with these reasons. In Studies 3 (N = 270) and 4 (N = 425), we manipulated the rate per week prospective mates went out with people they had just met and assessed participants' willingness to engage in casual sex and serious romantic relationships with prospective mates (Study 3) and the money and time they were willing to invest in prospective mates (Study 4). We frame our results using a sexual economics model to understand the role of perceived availability in mating dynamics. Copyright © 2012 European Association of Personality Psychology     

Numeracy as a Predictor of Adaptive Risky Decision Making

Numeracy or one's ability to appropriately process and use numerical information has been shown to be an important individual difference factor in decision making. The current study utilized a risky decision‐making task (called the “cups task”) in which choices are made to both earn and avoid losing hypothetical money. Critically, this design allowed investigators to examine numeracy‐related differences in adaptive decision‐making as measured by sensitivity to expected value (EV) differences over 54 paired‐choice trials—some in which it was advantageous to take a risk and some in which it was not. Results showed that in an undergraduate sample of 114 individuals, the less numerate took more risks and were less sensitive to varying EV levels than the more numerate, especially when it was disadvantageous to take a risk and when the choice involved a potential loss (rather than a gain). These results are consistent with a dual processing account in which the more numerate are much better than the less numerate at extracting the precise affective “gist” of the numerical information, which is then used to determine the goodness or badness of a particular choice. Copyright © 2012 John Wiley & Sons, Ltd.     

Development and Testing of an Abbreviated Numeracy Scale: A Rasch Analysis Approach

Research has demonstrated that individual differences in numeracy may have important consequences for decision making. In the present paper, we develop a shorter, psychometrically improved measure of numeracy—the ability to understand, manipulate, and use numerical information, including probabilities. Across two large independent samples that varied widely in age and educational level, participants completed 18 items from existing numeracy measures. In Study 1, we conducted a Rasch analysis on the item pool and created an eight‐item numeracy scale that assesses a broader range of difficulty than previous scales. In Study 2, we replicated this eight‐item scale in a separate Rasch analysis using data from an independent sample. We also found that the new Rasch‐based numeracy scale, compared with previous measures, could predict decision‐making preferences obtained in past studies, supporting its predictive validity. In Study, 3, we further established the predictive validity of the Rasch‐based numeracy scale. Specifically, we examined the associations between numeracy and risk judgments, compared with previous scales. Overall, we found that the Rasch‐based scale was a better linear predictor of risk judgments than prior measures. Moreover, this study is the first to present the psychometric properties of several popular numeracy measures across a diverse sample of ages and educational level. We discuss the usefulness and the advantages of the new scale, which we feel can be used in a wide range of subject populations, allowing for a more clear understanding of how numeracy is associated with decision processes. Copyright © 2012 John Wiley & Sons, Ltd.     

Individual Differences in Instructor Attitudes Underlying Maltreatment and Effective Mentoring in Basic Military Training

U.S. Air Force noncommissioned officers assigned to basic military training instructor (MTI) duty completed measures of attitudes previously linked to sexual harassment and sexual assault in the research literature: (a) attitudes of antipathy toward women (hostile sexism, Glick &; Fiske, 1996 Glick, P., &; Fiske, S. T. (1996). The ambivalent sexism inventory: Differentiating hostile and benevolent sexism. Journal of Personality and Social Psychology, 70, 491–512. 10.1037/0022-3514.70.3.491[Crossref], [Web of Science ®] , [Google Scholar]), and (b) attitudes favoring authoritarian use of power. Concurrent validation against trainee evaluations of MTIs on broader criteria showed that proauthoritarian attitudes were negatively associated with ratings of MTI effectiveness in mentoring and leadership; additionally, MTIs with stronger attitudes of hostile sexism were more likely reported as engaging in maltreatment of female trainees. These initial results contribute to ongoing understanding of individual differences as relevant to improve screening for a position of authority over the lowest ranking, and potentially most vulnerable military members. Directions for future research and implications for personnel selection and broader cultural changes are discussed.     

Studying cross-cultural differences in temperament in toddlerhood: United States of America (US) and Italy

Cross-cultural differences between matched samples (N = 306) of Italian and US toddlers were evaluated. Italian toddlers received higher scores on cuddliness, impulsivity, low intensity pleasure, perceptual sensitivity and positive anticipation, whereas US toddlers were higher on frustration, high-intensity pleasure, inhibitory control, shyness, and soothability.     

Developmental analyses of individual differences in intelligence: Comments on Demetriou et al. (2013)

In this commentary, I mention strengths of the work reported by Demetriou et al. (2013), including sophisticated methods, a powerful integrative theory, and provocative findings. I also suggest ways in which this line of work could be extended, including extending the developmental trajectory, moving beyond tests and tasks, and exploring the full richness of individual variations.