A developmental-genetic analysis of aggressive behavior in mice: IV. Genotype-environment interaction

To assess the extent of plasticity in behavioral development after directional selection for aggressive behavior, male mice were reared and tested in selected social rearing and testing conditions. After four generations of selective breeding, the lines differed in all attack measures when tested in a dyadic assessment following isolation rearing. Line-specific effects of isolation vs. group rearing were demonstrated, and longitudinal studies showed the ontogenetic pattern of difference between lines to be substantially changed by conditions of rearing and testing. The social-interactional processes that might produce the developmental genotype-environment interaction were investigated. Line-specific interaction patterns within long-established sibling groups predicted aggressive behavior in cross-situational dyadic assessments. Group rearing attenuated most line differences in aggressive measures, but the high-aggressive line was more likely than the low-aggressive line to persist in attacking over consecutive days of observation. Cross-fostering in early development did not significantly change adult aggressive behavior. Some implications of a developmental-genetic approach to the study of social interactions are discussed.     

Book Review

Past research has found positive links between happiness and various aspects of religiousness, yet it remains unclear how religion contributes to happiness and other well-being outcomes. One possible route is through purpose in life. Among a sample of 208 Christian Polish university students we investigated the mediating role of purpose in life between religion and subjective well-being. Intrinsic religiosity, as expected, was related to higher levels of purpose in life, happiness and life satisfaction, and positively predicted happiness and life satisfaction through purpose in life. The findings support the notion that eudaimonia and eudaimonic constructs like purpose in life may be the links between religion and well-being outcomes.     

Religious fundamentalism and perceived threat: a report from an experimental study

This study investigated the experimental effect of threat on religious fundamentalism (RF) and the tendency towards reprisal. We presented 102 Christians with one of three scenarios, involving the hire of a Christian biologist, evolution biologist, or a (neutral) communications expert as professor at their university, and also the subsequent sanctioning of his speeding violation. Moderated multiple regression analyses of Christian/evolutionist data found that low RF endorsed the evolutionist and high RF endorsed the Christian; further, participants levied a higher court fine on the speeding evolutionist, regardless of RF. Analyses of Christian/neutral data found that low RF discriminated in favour of the neutral candidate, whereas high RF did not discriminate between candidates; also, low RF sanctioned the neutral candidate with a speeding ticket, while high RF sanctioned the Christian. Overall findings indicated that fundamentalists were not necessarily aggressive or punitive and that they reacted no different from non-fundamentalists when values were threatened.     

Assessment of the Construct Validity of the EQ-5D in Patients with Acute Cough/Lower Respiratory Tract Infections

Although EQ-5D has been used in the context of acute cough/lower respiratory tract infections (acute cough/LRTI), it has not been formally validated in this disease area. The primary aim of this study is to assess the construct validity of EQ-5D as a measure for economic evaluation in the context of acute cough/lower respiratory tract infections. Data were collected alongside an observational study of the management of patients with acute cough/LRTI in thirteen European countries. However, the analysis was limited to 349 patients from the UK. Hypotheses were specified a priori and tested in order to establish the construct validity of EQ-5D. Statistical methods used to test the a priori hypotheses included Wilcoxon signed rank sum test, Kruskal-Wallis test, Chi-square test and regression analysis. Most of the relationships that were tested were in line with the a priori hypotheses. The main results indicate that there was a negative relationship between symptom severity scores and EQ-5D, smoking was associated with worse EQ-5D scores and EQ-5D was able to discriminate between patients with headache, interference with normal activities and disturbed sleep. This study also showed that the EQ-5D is moderately responsive in patients with acute cough/LRTI, and is a suitable measure for use in economic evaluation studies of acute cough/LRTI     

Development, microevolution, and social behavior

The central questions of social development--from the roots of mother-infant attachment to the plasticity of aggressive behavior--pivot on the relations between genetic and ontogenetic sources of variance. It is proposed that (a) developmental, experiential, and microevolutionary processes typically collaborate, rather than compete, in achieving social adaptation; (b) social behavior patterns are mostly closed to modification in the course of development and across generations, but avenues of vulnerability exist in ontogeny and microevolution for dynamic, rapid, and reversible changes in key features; (c) a general avenue for change is delay or acceleration in the developmental onset of one or more features of the behavior pattern, which in turn modifies the functions and properties of the adaptive configuration; and (d) the features of social behavior that are open to rapid change in ontogeny should be open as well to rapid changes in microevolution, although different underlying processes may be involved. Empirical findings from the investigation of aggressive interactions are used to illustrate this proposal on the dual genesis and coincident adaptation of social behaviors.     

Predictive Characteristics of Type A Behavior Among Working Men and Women

This study examined which motivation needs and job variables are associated with Type A/B behavior pattern for working women and men, and to what degree, if any, can these variables be used as predictors of Type A/B behavior pattern for each sex. Subjects were 797 working men and women (female, n = 439; male, n = 358) in 34 organizations in a metropolitan city in the West. Results showed that for both Type A women and men, the most significant factors were high levels of need for power, job commitment and hierarchical position. Job satisfaction was a significant predictor of Type B behavior pattern for both sexes. Need for achievement was a significant predictor of Type A behavior pattern for women but not for men. Age, working for a profit or nonprofit company, and level of education were significant predictors of Type A/B behavior for men but were not important contributors for women. Substantial differences between managers and nonmanagers were reported both within and between genders.     

Elementary school-aged stutterers' disfluencies during oral reading and spontaneous speech

This study assessed the effect of increasing the difficulty of reading material on the frequency and type of disfluency in elementary school stutterers, and determined the relationship between the amount and type of disfluencies exhibited during oral reading and spontaneous speech. Forty children participated: 10 children each from grades three, four, five, and six read five 200-word reading passages, corresponding to one grade level below school placement, the grade equivalent to school placement, and one, two, and three grades above school placement. Two-hundred-word spontaneous speech samples were also elicited and analyzed. Results indicated a significant increase in total molar disfluencies, total molecular behaviors, and seven out of the eight specific disfluency patterns examined, as the difficulty of the reading material increased. Reading levels I and II best predicted disfluencies during spontaneous speech. Results are discussed with respect to theoretical and clinical implications.     

The Relationship of Cognitive Development to Age, When Education and Intelligence Are Controlled For

In this study 165 volunteers aged 18–87 were recruited from educational, employment, church, and social organizations and administered 3 paper-and-pencil instruments: the Quick Test, a measure of verbal–perceptual intelligence; the Scale of Intellectual Development, a Perry measure of cognitive development; and an inventory of life experiences. Age was found to be negatively related to cognitive development, as was extent of participation in community or church activities, whereas intelligence and education were positively so related. Less dualistic thinking and more relativistic thinking were related to higher educational achievement. Nevertheless, dualistic thinking was found to increase among older age groups, even with intelligence and education controlled for.