The confounded nature of angry men and happy women.

Findings of 7 studies suggested that decisions about the sex of a face and the emotional expressions of anger or happiness are not independent: Participants were faster and more accurate at detecting angry expressions on male faces and at detecting happy expressions on female faces. These findings were robust across different stimulus sets and judgment tasks and indicated bottom-up perceptual processes rather than just top-down conceptually driven ones. Results from additional studies in which neutrally expressive faces were used suggested that the connections between masculine features and angry expressions and between feminine features and happy expressions might be a property of the sexual dimorphism of the face itself and not merely a result of gender stereotypes biasing the perception. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Functional Projection: How Fundamental Social Motives Can Bias Interpersonal Perception.

Results from 2 experimental studies suggest that self-protection and mate-search goals lead to the perception of functionally relevant emotional expressions in goal-relevant social targets. Activating a self-protection goal led participants to perceive greater anger in Black male faces (Study 1) and Arab faces (Study 2), both out-groups heuristically associated with physical threat. In Study 2, participants' level of implicit Arab-threat associations moderated this bias. Activating a mate-search goal led male, but not female, participants to perceive more sexual arousal in attractive opposite-sex targets (Study 1). Activating these goals did not influence perceptions of goal-irrelevant targets. Additionally, participants with chronic self-protective and mate-search goals exhibited similar biases. Findings are consistent with a functionalist, motivation-based account of interpersonal perception. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sex similarities and differences in preferences for short-term mates: What, whether, and why.

Are there sex differences in criteria for sexual relationships? The answer depends on what question a researcher asks. Data suggest that, whereas the sexes differ in whether they will enter short-term sexual relationships, they are more similar in what they prioritize in partners for such relationships. However, additional data and context of other findings and theory suggest different underlying reasons. In Studies 1 and 2, men and women were given varying "mate budgets" to design short-term mates and were asked whether they would actually mate with constructed partners. Study 3 used a mate-screening paradigm. Whereas women have been found to prioritize status in long-term mates, they instead (like men) prioritize physical attractiveness much like an economic necessity in short-term mates. Both sexes also show evidence of favoring well-rounded long- and short-term mates when given the chance. In Studies 4 and 5, participants report reasons for having casual sex and what they find physically attractive. For women, results generally support a good genes account of short-term mating, as per strategic pluralism theory (S. W. Gangestad & J. A. Simpson, 2000). Discussion addresses broader theoretical implications for mate preference, and the link between method and theory in examining social decision processes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Person€nvironment intersections: Everyday settings and common trait dimensions.

Intersection of personality dimensions (adjustment, likeability, self-control, social inclination, intellectance, and dominance) and taxonomy of everyday settings were examined. In Studies 1 and 2, Ss recalled situations relevant to each personality dimension. Judges categorized into six nondomicile (academic, athletic, business, play, religious, and streets) and six domicile (bedroom, eating room, living room, dormitory room, fraternity or sorority house, and outside house) categories. Trait/setting profiles converged across two methods and two regions. In Study 3, Ss rated visibility of each trait dimension in each setting. Interactions show some settings seen to allow more expression of some traits. Main effects show some settings seen as more generally illuminative, and some traits as more generally visible. Similarities in trait/setting profiles across three studies are discussed; joint importance of situational constraint and public observability in a setting's relevance to display of traits is considered. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Repulsion or attraction?: Group membership and assumed attitude similarity.

Three studies investigated group membership effects on similarity-attraction and dissimilarity-repulsion. Membership in an in-group versus out-group was expected to create initially different levels of assumed attitude similarity. In 3 studies, ratings made after participants learned about the target's attitudes were compared with initial attraction based only on knowing target's group membership. Group membership was based on political affiliation in Study I and on sexual orientation in Study 2. Study 3 crossed political affiliation with target's obnoxiousness. Attitude dissimilarity produced stronger repulsion effects for in-group than for out-group members in all studies. Attitude similarity produced greater increments in attraction for political out-group members but not for targets with a stigmatic sexual orientation or personality characteristic. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of a high-volume in situ mRNA hybridization assay for the quantification of gene expression utilizing scintillating microplates

The 94-kDa glucose-regulated protein (GRP94) is a member of the 90-kDa heat-shock protein (HSP90) family. In this study, we expressed the barley (Hordeum vulgare L.) GRP94 and the alpha isoform of human HSP90 (HSP90 alpha) in Escherichia coli and compared their dimer-forming abilities. Native polyacrylamide gel electrophoresis revealed that GRP94 (amino acids 69-809) and the full-length form of HSP90 alpha existed in the dimeric state. The C-terminal 326 amino acids of GRP94 or the C-terminal 200 amino acids of HSP90 alpha were sufficient for the dimerization. Limited proteolysis of the C-terminal half of GRP94 with thrombin revealed a 16-kDa fragment, which was derived from the C-terminus of GRP94 through the cleavage of either the Arg710-His711 or the Arg735-Leu736 bond. These cleavage sites were nearly, if not completely, equivalent to the proteolyzed region of HSP90 alpha. Their structural similarity prompted us to investigate, by use of a coexpression system, the possibility that the two proteins form a heterodimeric complex. A two-step affinity chromatography that specifically trapped only the complex revealed that the C-terminal 200 amino acids of HSP90 alpha and the C-terminal 326 amino acids of GRP94 associated with HSP90 alpha and GRP94, respectively. However, the C-terminal 326 amino acids of GRP94 failed to form a complex with HSP90 alpha. In conclusion, these results indicate the similarity of the general dimeric conformation of the two HSP90 family member proteins, but show that the similarity is not sufficient to allow heterodimer formation.     

Peacocks, Picasso, and parental investment: The effects of romantic motives on creativity.

Four experiments explored the effects of mating motivation on creativity. Even without other incentives to be creative, romantic motives enhanced creativity on subjective and objective measures. For men, any cue designed to activate a short-term or a long-term mating goal increased creative displays; however, women displayed more creativity only when primed to attract a high-quality long-term mate. These creative boosts were unrelated to increased effort on creative tasks or to changes in mood or arousal. Furthermore, results were unaffected by the application of monetary incentives for creativity. These findings align with the view that creative displays in both sexes may be linked to sexual selection, qualified by unique exigencies of human parental investment. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Fatty acid composition of symbiotic zooxanthellae in relation to their hosts

Gymnodinoid dinoflagellate symbionts, commonly referred to as zooxanthellae, are widely distributed among marine invertebrates. It has been assumed that they represent only one species,Gymnodinium microadriaticum. The fatty acid composition of total lipids and galactolipids of zooxanthellae isolated from 8 species of corals, 3 species of clams and a foraminiferan have been analyzed and found to vary according to the host. For example, the content of eicosapentaenoic acid in clam zooxanthellae monogalactosyldiacylglycerol was less than 2%, whereas in the same lipid from coral zooxanthellae, the content ranged from 9 to 22%. Corresponding values for the acid in digalactosyl-diacylglycerol were 1–8% from clam zooxanthellae and 23–40% from coral zooxanthellae. Coral zooxanthellae monogalactosyldiacylglycerol contain higher levels of octadecatetraenoic acid than are found in digalactosyldiacylglycerol, whereas the reverse is true in clam zooxanthellae. The fatty acid composition of the lipids of an axenic culture of zooxanthellae isolated from the clamTridacna maxima are similar to those of cells freshly isolated from the host. The results suggest either that the host is capable of affecting the fatty acid metabolism of the symbiont or that different strains of zooxanthellae occur in corals and clams.     

Profiting from controversy: Lessons from the person-situation debate.

For the past 2 decades the person–situation debate has dominated personality psychology and had repercussions in clinical, social, and organizational psychology. This controversy puts on trial the central assumption that internal dispositions have an important influence on behavior. According to emerging views of scientific progress, controversy serves the function of narrowing the field of competing hypotheses. We examine 7 hypotheses that arose during the course of the person–situation debate, ranging from most to least pessimistic about the existence of consensual, discriminative personality traits. The evidence fails to support the hypotheses that personality traits are (a) in the eye of the beholder, (b) semantic illusions, (c) artifacts of base-rate accuracy, (d) artifacts of shared stereotypes, (e) due to discussion between observers (who ignore behavior in favor of verbal self-presentation or reputation), or (f) by-products of situational consistencies. Evidence also fails to support the hypothesis (g) that although traits are related to behavior, the relationship is too small to be important. Research generated by these hypotheses has allowed us to better specify the circumstances under which personality assessments will be valid. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A step in the socialization of altruism as hedonism: Effects of negative mood on children's generosity under public and private conditions.

Prior research has indicated that although negative mood-induction procedures reliably lead to enhanced helping in adults, such procedures do not produce increased helping in young children. Consistent with the negative state relief model, it was expected that, relative to neutral mood Ss, children in a negative mood would be more generous if the helping opportunity offered the potential for direct reward through social approval. This expectation was supported in a pair of studies wherein 149 1st–3rd graders were asked to imagine either neutral or sad experiences and were then given the opportunity to be charitable either in public or in private. Exp II provided evidence that the enhanced public helping of negative mood Ss is more parsimoniously interpreted as an attempt to remove negative mood than to repair public image. A 3-step account of the development of altruism as a self-reward is proposed. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)