Selection for universal facial emotion

Facial expression is heralded as a communication system common to all human populations, and thus is generally accepted as a biologically based, universal behavior. Happiness, sadness, fear, anger, surprise, and disgust are universally recognized and produced emotions, and communication of these states is deemed essential in order to navigate the social environment. It is puzzling, however, how individuals are capable of producing similar facial expressions when facial musculature is known to vary greatly among individuals. Here, the authors show that although some facial muscles are not present in all individuals, and often exhibit great asymmetry (larger or absent on one side), the facial muscles that are essential in order to produce the universal facial expressions exhibited 100% occurrence and showed minimal gross asymmetry in 18 cadavers. This explains how universal facial expression production is achieved, implies that facial muscles have been selected for essential nonverbal communicative function, and yet also accommodate individual variation.     

A Metacompatibilist Account of Free Will: Making Compatibilists and Incompatibilists More Compatible

The debate over free will has pittedlibertarian insistence on open alternativesagainst the compatibilist view that authenticcommitments can preserve free will in adetermined world. A second schism in the freewill debate sets rationalist belief in thecentrality of reason against nonrationalistswho regard reason as inessential or even animpediment to free will. By looking deeperinto what motivates each of these perspectivesit is possible to find common ground thataccommodates insights from all those competingviews. The resulting metacompatibilist view offree will bridges some of the differencesbetween compatibilists and incompatibilists aswell as between rationalists andnonrationalists, and results in a free willtheory that is both more philosophicallyinclusive and more firmly connected tocontemporary research in psychology andbiology.     

The Sad Truth: Optimism, Pessimism, and Pragmatism

Pragmatists (such as William James) recommend optimism as a successful strategy, and recent psychological research has confirmed its value. But optimism comes at a price: optimists are less accurate in their assessments and expectations than are pessimists. Thus optimism 'proves itself to be good in the way of belief', and by pragmatic standards should count as true; but that makes the accuracy costs of optimism invisible (the problem is only exacerbated by Rorty's recommendation that pragmatists stop speaking of truth altogether). The problem prevents pragmatists from offering a Darwinian explanation of why pessimism survives, and also blocks any pragmatist account of the well-documented and highly successful exploratory behavior of many animal species.     

Perfectionism levels in African-American and Caucasian adolescents

Previous studies have indicated that perfectionism levels are higher among African-American females than among Caucasians. However, this conclusion has been reached largely from studies of adult populations. The present study of adolescents assesses whether this difference is found in all aspects of perfectionism, and whether it applies equally to males and females. The Multi-dimensional Perfectionism Scale was completed by 387 high school students (15–19 years). African-American males and females had greater levels of self-oriented and other-oriented perfectionism than their Caucasian peers, but there was no difference in the perception of external pressures to perform well. Possible reasons for this pattern are discussed, with an emphasis on the possibility that African-American adolescents perceive a need to overcorrect their performance as a result of their perceived status in their broader society.     

Enhancing Cultural Intelligence: The Roles of Implicit Culture Beliefs and Adjustment

Although international experience has been proposed as an important factor contributing to the development of cultural intelligence (CQ), its effect on CQ has often been assumed. Through a contact hypothesis framework, this study advances our understanding of CQ. It examines the process through which CQ changes occur against the backdrop of international exchanges. University students who were enrolled in an international exchange program with partners worldwide participated in this study. Using a 3‐wave time‐lagged design, we found that implicit culture beliefs (the beliefs about fixedness or malleability of cultural attributes) influenced intercultural rejection sensitivity, which impacted the cross‐cultural adjustment of sojourning students and their subsequent CQ. Specifically, we found that cross‐cultural adjustment experiences, particularly in the social domain, play an important role in influencing CQ. Findings from this study raise novel research questions and underscore the need for more empirical work in this area. Theoretical and practical implications are discussed.     

Factor analysis and scale revision

This article reviews methodological issues that arise in the application of exploratory factor analysis (EFA) to scale revision and refinement. The authors begin by discussing how the appropriate use of EFA in scale revision is influenced by both the hierarchical nature of psychological constructs and the motivations underlying the revision. Then they specifically address (a) important issues that arise prior to data collection (e.g., selecting an appropriate sample), (b) technical aspects of factor analysis (e.g., determining the number of factors to retain), and (c) procedures used to evaluate the outcome of the scale revision (e.g., determining whether the new measure functions equivalently for different populations).     

Using IRT to separate measurement bias from true group differences on homogeneous and heterogeneous scales: an illustration with the MMPI

The authors present a didactic illustration of how item response theory (IRT) can be used to separate measurement bias from true group differences on homogeneous and heterogeneous scales. Several bias detection methods are illustrated with 12 unidimensional Minnesota Multiphasic Personality Inventory (MMPI) factor scales (Waller, 1999) and the 13 multidimensional MMPI validity and clinical scales. The article begins with a brief review of MMPI bias research and nontechnical reviews of the 2-parameter logistic model (2-PLM) and several IRT-based methods for bias detection. A goal of this article is to demonstrate that homogeneous and heterogeneous scales that are composed of biased items do not necessarily yield biased test scores. To that end, the authors perform differential item- and test-functioning analyses on the MMPI factor, validity, and clinical scales using data from 511 Blacks and 1,277 Whites from the California Youth Authority.