Correlation between Changes in Stress-Induced Corticosterone Secretion and GR mRNA Levels

The current study was conducted to determine the potential relationship between stress-induced corticosterone secretion and corticosteroid receptor mRNA levels after 5 days of intermittent stress. In particular, we were interested in the rate at which animals terminate a stress response, and how this termination may be altered by repeated stress. Adult male Sprague-Dawley rats were subjected to either 5 days of restraint stress or 5 days of an unpredictable stress paradigm. Restraint-stress induced corticosterone secretion was measured on Days 1 and 5 in both groups, and animals were killed on Day 6. Glucocorticoid receptor (GR), and mineralocorticoid (MR) mRNA levels were determined using in-situ hybridization techniques. Five days of restraint stress caused an habituation of the plasma corticosterone response to stress measured 60 and 90 min post-stress initiation; this pattern of corticosterone secretion was not observed in the animals subjected to unpredictable stress. Five days of either stress paradigm did not alter MR mRNA levels measured within the hippocampus or GR mRNA levels within the hippocampus or the medial parvocellular division of the paraventricular nucleus of the hypothalamus (mpPVN). However, an individual's GR mRNA levels measured within the CA1/2 region of the hippocampus and the mpPVN were significantly correlated with the degree of habituation of the corticosterone response to stress measured on Day 5. This suggests that an increase in the rate of termination of the stress response and levels of GR within the hippocampus and mpPVN may be functionally related.     

Bullying as strategic behavior: relations with desired and acquired dominance in the peer group

To examine whether bullying is strategic behavior aimed at obtaining or maintaining social dominance, 1129 9- to 12-year-old Dutch children were classified in terms of their role in bullying and in terms of their use of dominance oriented coercive and prosocial social strategies. Multi-informant measures of participants’ acquired and desired social dominance were also included. Unlike non-bullying children, children contributing to bullying often were bistrategics in that they used both coercive and prosocial strategies and they also were socially dominant. Ringleader bullies also expressed a higher desire to be dominant. Among non-bullying children, those who tended to help victims were relatively socially dominant but victims and outsiders were not. Generally, the data supported the claim that bullying is dominance-oriented strategic behavior, which suggests that intervention strategies are more likely to be successful when they take the functional aspects of bullying behavior into account.     

The Draw-A-Person Test: an indicator of children's cognitive and socioemotional adaptation?

The authors examined aspects of reliability and validity of the Goodenough-Harris Draw-A-Person Test (DAP; D. B. Harris, 1963). The participants were 115 seven- to nine-year-old students attending regular or special education schools. Three judges, with a modest degree of training similar to that found among practicing clinicians, rated the students' human figure drawings on developmental and personality variables. The authors found that counting details and determining developmental level in the DAP test could be carried out reliably by judges with limited experience. However, the reliability of judgments of children's social and emotional development and personality was insufficient. Older students and students attending regular schools received significantly higher scores than did younger students or students attending special education schools. The authors found that the success of the DAP test as an indicator of cognitive level, socioemotional development, and personality is limited when global judgments are used. The authors concluded that more specific, reliable, valid, and useful scoring systems are needed for the DAP test.     

Sources of annoyance in close relationships: sex-related differences in annoyance with partner behaviors

The present study is an examination of sex differences in the sources of annoyance that partners in close relationships might experience as a result of each other's behavior. To test hypotheses derived from S. E. Cross and L. Madson's (1997) self-construal theory and from D. M. Buss's (1989) evolutionary psychology-based model, men and women of varying ages and educational levels were asked to rate how annoyed they would be with each of 13 potentially annoying behaviors of their intimate partner. Results were consistent with self-construal theory in that relationship-threatening behaviors were more annoying to women than to men and autonomy threatening behaviors were more annoying to men than to women. Results were also consistent with evolutionary psychology in that aggressive behaviors were more annoying to women than to men and sexual withholding was relatively more annoying to men than to women. Sex differences in annoyance with relationship-threatening, autonomy-threatening, and reproductive strategy behaviors were independent of age and education level, although these factors did affect respondents' annoyance when partners were unemotional, sloppy, or pleased with their own appearance. Results showed that sources of annoyance in intimate relationships should not only be studied from an evolutionary perspective but from the perspectives of social, personality, and developmental psychology as well.     

Narcissism,Bullying, and Social Dominance in Youth: A Longitudinal Analysis

A few previous studies have shown that narcissistic traits in youth are positively associated with bullying. However, research examining the developmental relationship between narcissism and bullying is lacking. Moreover, it is unclear whether narcissists constitute a homogeneous group and whether the bullying of narcissistic youth results in establishing social dominance over peers. The present work addresses these gaps. Children (N?=?393; M _age?=?10.3; 51 % girls) were followed during the last 3 years of primary school. Person-centered analyses were used to examine whether groups with distinct developmental trajectories for narcissism and two bullying forms (direct and indirect) can be identified, and how these trajectories are related. Multiple groups emerged for all constructs examined. For girls, higher narcissism was neither related to more intense bullying, nor to higher social dominance. In contrast, highly narcissistic boys were more likely than their peers to show elevated direct bullying, and in particular elevated indirect bullying. Hence, high narcissism is a risk factor for bullying in boys, but not in girls. However, narcissism is not always accompanied by high bullying, given that many boys on the high bullying trajectories were not high in narcissism. Results show that among narcissistic youth only those who engage in high levels of bullying are high in social dominance.     

Costs and Benefits of Bullying in the Context of the Peer Group: A Three Wave Longitudinal Analysis

Whereas previous research has shown that bullying in youth is predictive of a range of negative outcomes later in life, the more proximal consequences of bullying in the context of the peer group at school are not as clear. The present three-wave longitudinal study followed children (N?=?394; 53 % girls; M _age?=?10.3 at Time 1) from late childhood into early adolescence. Joint trajectory analyses were used to examine the dynamic prospective relations between bullying on the one hand, and indices tapping perceived popularity, peer-reported social acceptance, self-perceived social competence, and internalizing symptoms on the other. Results show that although young bullies may be on a developmental path that in the long run becomes problematic, from the bullies’ perspective in the shorter term personal advantages outweigh disadvantages. High bullying is highly positively related to high social status as indexed by perceived popularity. Although bullies are not very high in peer-rated social acceptance, most are not very low either. Moreover, bullies do not demonstrate elevated internalizing symptoms, or problems in the social domain as indexed by self-perceived social competence. As bullying yields clear personal benefits for the bullies without strong costs, the findings underscore the need for interventions targeting mechanisms that reward bullying (198 words).     

Fear of storms and hurricanes in Antillean and Belgian children

The present study assessed fear of hurricanes in children who had been confronted with this natural event (i.e., Antillean children, n=161). Their fear levels were compared to those of children who are unfamiliar with such an event (i.e., Belgian children, n=185). Antillean children reported significantly higher levels of fear of storms than Belgian children did, thus providing support for the notion that exposure to dangerous events promotes children's fears of those events. Surprisingly, however, Antillean children had lower scores on the 'Hurricanes' item than Belgian children. Plausibly, differences in how children interpreted this item may have accounted for this unexpected finding. That is, ratings of Antillean children were probably based on actual experiences with hurricanes, whereas scores of Belgian children presumably reflected appraisal of threat in case they would be confronted with such an event. Implications of this finding for the assessment of childhood fears are briefly discussed.     

Incarcerated adolescent girls: personality, social competence, and delinquency

The aim of this study was to gain greater insight into the relationship of delinquency to personality and social competence in incarcerated girls. It was hypothesized that agreeableness and conscientiousness would correlate negatively with delinquency, and that the sensation-seeking aspect of extroversion would correlate positively. Two theoretical views were used to predict the relationship between social competence and delinquency: (a) delinquency as an expression of lack of social competence (i.e., social deficit), and (b) delinquency as socially competent and rationally analyzed behavior. The first view implies a negative correlation between delinquency and social competence, while the second indicates a positive one. The participants were thirty-three 12- to 18-year-old incarcerated girls. An adaptation of the Self-Reported Delinquency Scale was used for measuring delinquency; personality was measured using the Five-Factor Personality Inventory; and the Scale for Interpersonal Behavior was used to measure social competence. Agreeableness was not found to correlate with the overall delinquency score or with any specific type of delinquency or crime. The more crimes the girls reported, the less conscientious they were, and the more neurotic and open they were. The correlation between delinquency and extroversion was not statistically significant. A higher level of delinquency was accompanied by higher social competence when negative self-assertion was required (i.e., a low level of tension was felt in expressing negative feelings that were appropriate to the situation). In other social situations, however, the girls reported more situation-inappropriate feelings of tension. It was concluded that some personality factors and aspects of social competence can predict delinquency.     

Complexity of visual icons studied via signal detection theory

Two investigations on how humans perceive information from visually rendered complex objects, such as military icons (glyphs) were conducted. A signal detection theory framework was employed to evaluate the sensitivity and specificity of human subject performance. The 6 adults tested showed that as complexity increased, their accuracy in performance decreased. Study 1 showed that complex dimensions (features) could not be assigned arbitrarily. Study 2 developed a rank ordering for features of an iconic object.