Persistent effect of incubation temperature on stress-induced behavior in the Yucatan banded gecko (Coleonyx elegans)

Although variability in behavioral traits within animal populations is well documented, the mechanisms maintaining that variability are still insufficiently known. In this study, we examined whether differences in thermal environment during egg incubation can permanently organize nonsocial behavior across different contexts and situations in a lizard species. We incubated eggs of the Yucatan banded gecko, Coleonyx elegans (Squamata: Gekkota: Eublepharidae) at 3 constant temperatures (26, 28, and 30 °C) and raised juveniles separately under the same conditions until adulthood. We then subjected them to 3 behavioral tests within 2 different contexts: an open-field test and a test of antipredator behavior (stressful context) as well as a test of feeding behavior (nonstressful context). Individuals of both sexes incubated at 30 °C were consistently less active and showed lower frequencies of several stereotypic behaviors in the stressful contexts than did individuals incubated at 26 and 28 °C. The test of feeding behavior revealed no significant effect of incubation temperature on geckos' behavior. Thus, our study demonstrates that developmental plasticity may play an important role in producing variability in stress-induced behavior in lizards.     

Correction to urošević et Al. (2012)

Reports an error in "Longitudinal Changes in Behavioral Approach System Sensitivity and Brain Structures Involved in Reward Processing During Adolescence" by Sne?ana Uro?evi?, Paul Collins, Ryan Muetzel, Kelvin Lim and Monica Luciana (Developmental Psychology, Advanced Online Publication, Mar 5, 2012, np). Figure 2 was distorted in production. The correct version is presented in the erratum. (The following abstract of the original article appeared in record 2012-05404-001.) Adolescence is a period of radical normative changes and increased risk for substance use, mood disorders, and physical injury. Researchers have proposed that increases in reward sensitivity (i.e., sensitivity of the behavioral approach system [BAS]) and/or increases in reactivity to all emotional stimuli (i.e., reward and threat sensitivities) lead to these phenomena. The present study is the first longitudinal investigation of changes in reward (i.e., BAS) sensitivity in 9- to 23-year-olds across a 2-year follow-up. Support was found for increased reward sensitivity from early to late adolescence, and evidence was found for decline in the early 20s. This decline is combined with a decrease in left nucleus accumbens (Nacc) volume, a key structure for reward processing, from the late teens into the early 20s. Furthermore, we found longitudinal increases in sensitivity to reward to be predicted by individual differences in the Nacc and medial orbitofrontal cortex (OFC) volumes at baseline in this developmental sample. Similarly, increases in sensitivity to threat (i.e., behavioral inhibition system sensitivity) were qualified by sex, with only females participants experiencing this increase, and predicted by individual differences in lateral OFC volumes at baseline. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Einige Charakteristika des Traumbeginns

Ohne Zusammenfassung     

How to address the caveat of avoiding direct contact: Reducing prejudice towards gay and lesbian people in five Balkan countries

ABSTRACT

In the Balkans, contact with gays and lesbians is typically hostile or avoided. Drawing from probability samples of young people from five Balkan countries (N = 1046), we examined whether it is possible to transfer the effects of contact with other marginalized outgroups (largest ethnic minority in every country, Roma, the extremely poor and physically disabled) to acceptance of gays and lesbians (secondary outgroup), and whether this relationship could be explained by attitude generalization and increased intergroup trust. Path analyses supported the secondary transfer effect: it confirmed that, while controlling for direct contact, contact with other marginalized groups was related to more acceptance of a secondary group; this relationship was mediated by trust. This was found across all primary groups in the combined samples, while the effect varied for different groups in country samples. The results add to the value of intergroup contact as a mean of prejudice-reduction.     

Do overall dimension ratings from assessment centres show external construct-related validity?

ABSTRACT

There have been repeated calls for an external construct validation approach to advance our understanding of the construct-related validity of assessment centre dimension ratings beyond existing internal construct-related validity findings. Following an external construct validation approach, we examined whether linking assessment centre overall dimension ratings to ratings of the same dimensions that stem from sources external to the assessment centre provides evidence for construct-related validity of assessment centre ratings. We used data from one laboratory assessment centre sample and two field samples. External ratings of the same dimensions stemmed from assessees, assessees’ supervisors, and customers. Results converged across all three samples and showed that different dimension-same source correlations within the assessment centres were larger than same dimension-different source correlations. Moreover, confirmatory factor analyses revealed source factors but no dimension factors in the latent factor structure of overall dimension ratings from the assessment centre and from external sources. Hence, consistent results across the three samples provide no support that assessment centre overall dimension ratings and ratings of the same dimensions from other sources can be attributed to dimension factors. This questions arguments that assessment centre overall dimension ratings should have construct-related validity.     

The Eysenck personality questionnaires and delinquency prediction

The predictive validity of the EPQ scales with regard to future offending was examined. The Junior and Adult EPQ forms were administered to 179 male high-school students (13–15 yrs) and 75 delinquent youths (15–18 yrs), respectively. All subjects were followed up with regard to proven offences committed in the 12-month period following testing. The results suggested that both the junior and adult form P and C scales have validity in predicting future offending.     

Husserl on Hume

ABSTRACT

This article offers an account of the development of Husserl’s assessment of Hume’s position in the history of philosophy. In Husserl’s early treatment of Hume, Husserl’s interpretation was shaped by the anti-Kantian views of his teacher Franz Brentano. Later, however, Husserl concentrated on those themes in Hume’s philosophy that were of relevance for the development of his own conception of phenomenology. His analysis into the a priori structures of intentionality led the Husserl of Logical Investigations (1900–1901) to reject Hume’s nominalism and sensualism, and to criticize Hume’s naturalistic psychologism and fictionalism. Already at this point, however, Husserl appreciated Hume’s metaphysical neutrality as well as his radical starting point in the immediate givenness of consciousness. In the period following Husserl’s transcendental turn in Ideas I (1913), Hume is gradually re-assessed in the context of Husserl’s engagement with Kant as a philosopher who offers important insights concerning concrete problems of transcendental philosophy. For Husserl, Hume ultimately offers the first outline of a pure phenomenology and, indeed, becomes one of the most important forerunners of transcendental philosophy as such.