Stereotypes and steroids: using a psychobiosocial model to understand cognitive sex differences

To further our understanding of cognitive sex differences, we studied the relationship between menstrual phase (via serum estradiol and progesterone levels) and cognitive abilities and cognitive performance in a sample of medical students in eastern Turkey. As expected, we found no sex differences on the Cattell "Culture Fair Intelligence Test" (a figural reasoning test), with females scoring significantly higher on a Turkish version of the Finding A's Test (rapid word knowledge) and males scoring significantly higher on a paper-and-pencil mental rotation test. The women showed a slight enhancement on the Finding A's Test and a slight decrement in Cattell scores during the preovulatory phase of their cycle that (probably) coincided with a rise in estrogen. There were also small cycle-related enhancements in performance for these women on the mental rotation test that may reflect cyclical increases in estrogen and progesterone. Additional analyses showed an inverted U-shaped function in level of estradiol and the Cattell Test. Finally, for women who were tested on Day 10 of their menstrual cycle, there was a negative linear relationship between their Cattell scores and level of progesterone. Stereotypes about the cognitive abilities of males and females did not correspond to performance on the mental rotation or Finding A's Test, so the sex-typical results could not be attributed to either stereotype threat or stereotype activation. For practical purposes, hormone-related effects were generally small. Variations over the menstrual cycle do not provide evidence for a "smarter" sex, but they do further our understanding of steroidal action on human cognitive performance.     

Short-term memory and working memory as indices of children's cognitive skills

In the current literature, empirical and conceptual distinctions have been drawn between a more or less passive short-term memory (STM) system and a more dynamic working memory (WM) system. Distinct tasks have been developed to measure their capacity and research has generally shown that, for adults, WM, and not STM, is a reliable predictor of general cognitive ability. However, the locus of the differences between the tasks has received little attention. We present data from children concerning measures of matrices reasoning ability, reading, and numerical skill along with forward and backward order serial recall of WM, STM, and STM with articulatory suppression tasks. As indices of children's cognitive skills, STM and WM are shown to be rather similar in terms of memory per se. Neither the opportunity for rehearsal nor task complexity provides satisfactory explanations for differences between memory tests.     

Die paradoxie des selbst

Ohne Zusammenfassung     

The effects of delay on neonatal retention of habituated head-turning

Recovery of neonatal head orientation following auditory habituation was used to examine the effects of intertrial delay. One of two words served as stimuli with criterion orienting and habituation established before the delay. Fifty-six full-term neonates were assigned randomly to one of four delay groups: 10 (control), 55, 100, or 145 s. The percentage of head-turns toward the sound source (with one turn per trial) for blocks of three trials served as the principal dependent variable. Recovery of localized head-turning increased as length of delay increased, with the 100- and 145-s groups showing greater recovery than the 10- and 55-s groups. Infants presented with control trials systematically turned away from the sound source following habituation. Selective sensory adaptation, spontaneous recovery, and short-term memory interpretations of these data are considered.     

The Ehrenfest Fleas: From Model to Theory

A generalization of Ehrenfest's urn model is suggested. This will allow usto treat a wide class of stochastic processes describing the changes ofmicroscopic objects. These processes are homogeneous Markov chains. Thegeneralization proposed is presented as an abstract conditional (relative)probability theory. The probability axioms of such a theory and some simpleadditional conditions, yield both transition probabilities and equilibriumdistributions. The resulting theory interpreted in terms of particles andsingle-particle states, leads to the usual formulae of quantum and classicalstatistical mechanics; in terms of chromosomes and allelic types, it allowsthe deduction of many genetical models including the Ewens sampling formula;in terms of agents' strategies, it gives a justification of the ``herdbehaviour' typical of a population of heterogeneous economic agents.     

Do pastoral counselors have a duty to report clergy sexual abuse done by their clergy clients?

What does a pastoral counselor do when a clergy client reveals that he or she has been sleeping with a parishioner? Does the counselor have an ecclesiastical duty to report this offense to a church official; or does the pledge of confidentiality trump any disclosure? Some ecclesiastical bodies require their clergy to bring knowledge of these offenses to church authorities. Does this requirement apply to pastoral counselors? The authors have been confronted with these questions in their ministry of pastoral counseling and have struggled with producing a faithful, professional response. Along the way they have not received clear direction from judicatories or professional organizations. This article is the authors' attempt to answer the questions raised above as well as to challenge professional and ecclesiastical bodies to confront more forthrightly the dilemmas these situations cause for pastoral counselors who seek to protect the welfare of the Church as well as protect the pledge to maintain confidentiality.     

Cooling the heat of temptation: Mental self‐control and the automatic evaluation of tempting stimuli

The present research investigated whether mental self‐control strategies can reduce the automatic positivity elicited by tempting stimuli. In two studies employing chocolate as the temptation of interest, we found that participants instructed to imagine a chocolate product in a nonconsummatory manner exhibited significantly less automatic positivity with regard to the product as compared to participants instructed to imagine the hedonic, consummatory aspects of the product and control participants engaged in a neutral task. These findings were replicated in a second study. Additionally, in Study 2 we found that automatic evaluations of chocolate were lowest for participants instructed to form implementation intentions to refrain from consumption. Taken together, these findings demonstrate that mental self‐control strategies such as nonconsummatory transformation and implementation intentions extend to the level of automatic processing by reducing the positivity of automatically activated affective responses. Copyright © 2009 John Wiley & Sons, Ltd.