Lifelong hyperarousal in the spontaneously hypertensive rat indicated by operant behavior

Instrumental conditioning techniques were used to obtain objective evidence of differences in behavioral arousal between the spontaneously hypertensive rat (SHR) and the normotensive ancestral Wistar Kyoto (WKY) strain. Subjective emotionality ratings previously indicated that the genetically hypertensive rats were more active and aggressive than their normotensive cousins. In a lengthy series of operant conditioning sessions using a small number of adult female SHR and WKY rats, hyperarousal in the SHR was confirmed by their significantly higher response outputs on either response contingent or time contingent schedules of reinforcement. Conditioned emotionality tests during this series of experiments also suggested hyperarousal and aggressiveness in the SHR, since the fear-conditioned stimulus suppressed bar-pressing in the SHR much less than in the WKY. Further experiments with young prehypertensive SHR rats provided the same evidence of hyperresponsivity in the SHR compared to the WKY strain. Furthermore, these young SHR failed to develop hypertension by the end of the study (14 weeks of age), while their nonconditioned SHR cousins had become clearly hypertensive by the same age. This suggests that factors related to the conditioning methods modified the development of high blood pressure in this animal model of essential hypertension.     

An apparatus for recording figural after-effects

A simple apparatus is described by which Figural After-effects may be recorded directly from the subject's adjustments of a test figure. Curves which have been recorded confirm the results of other workers obtained by more laborious methods.     

Day-to-Day Variability in Empathy as a Function of Daily Events and Mood

Despite broad agreement that understanding a personality construct requires integrating trait and state levels of analysis, few studies have explicitly attempted such an integration. The present study did this by examining the relationships between trait and state measures of empathy. State measures were taken daily, with a focus on the day level (within-person) covariation between empathy and daily mood and events. Twice a week for up to 10 weeks, 103 participants provided measures of their daily empathy and mood (NA and PA) and described the events that occurred each day. Multilevel random coefficient modeling analyses found that daily empathy covaried positively with the impact of daily positive and negative social events and with daily positive and negative affect. Empathy did not covary with achievement-related events. Analyses that simultaneously included empathy, mood, and events suggested that daily NA mediated relationships between daily empathy and daily negative social events. Although mean daily empathy was positively related to trait empathy, trait empathy did not moderate relationships between daily empathy and events nor between daily empathy and mood. Moreover, daily empathy did not covary with daily depressogenic thinking, need for cognition, nor self-esteem, suggesting that empathy is distinct from these constructs. Possible mechanisms linking social events and empathy, such as emotional contagion, are discussed.     

The pleasures of uncertainty: prolonging positive moods in ways people do not anticipate

The authors hypothesized that uncertainty following a positive event prolongs the pleasure it causes and that people are generally unaware of this effect of uncertainty. In 3 experimental settings, people experienced a positive event (e.g., received an unexpected gift of a dollar coin attached to an index card) under conditions of certainty or uncertainty (e.g., it was easy or difficult to make sense of the text on the card). As predicted, people's positive moods lasted longer in the uncertain conditions. The results were consistent with a pleasure paradox, whereby the cognitive processes used to make sense of positive events reduce the pleasure people obtain from them. Forecasters seemed unaware of this paradox; they overwhelmingly preferred to be in the certain conditions and tended to predict that they would be in better moods in these conditions.     

Sex differences in landmark learning by children aged 5 to 12 years

Previous research has shown that men and boys learn routes faster and with fewer errors than do women and girls. Research with adults suggests that men use Euclidean cues when learning a route, whereas women use landmark-based strategies. The strategies used by children have received little study. In Exp. 1, 50 boys and girls, ages 5 to 12 years, were shown a map that contained only landmarks (no streets or roads) and were asked to learn a route consisting of 23 of the landmarks. The children used a pointer to trace the route on the map to a criterion of two successive trials without errors. The performance of boys and girls did not differ significantly on this route-learning task on three measures (number of trials to reach criterion, total time to reach criterion, and total number of errors). In Exp. 2, 52 boys and girls, ages 5 to 12 years, were shown the same map as in Exp. 1 and were asked to learn a route consisting of 12 landmarks. The children traced the route by picking pictures of landmarks in the correct order from a stack of cards with pictures of landmarks on them. Girls made significantly fewer errors than boys on this route-learning task in Exp. 2, and a significantly larger number of girls than boys completed the task. None of the boys in the 5- to 6-yr.-old age group learned the route. When Euclidean cues were minimized in Exp. 2, boys made more errors and took as much time as girls to reach the criterion of two successive correct trials.     

Integrating the most unintuitive empirical observations of 2007 in the domain of personality and social psychology into a unified framework

Two obstacles impede the development of productive theories in personality, social, and organizational psychology. First, the distinct frameworks are seldom integrated; the various theories sometimes yield incompatible implications. Second, because many findings in these fields seem intuitive, these observations do not augment the validity of these theories. To override these issues, this paper integrates the 70 most unintuitive findings of 2007 into a unified framework, derived from personality systems interaction theory. Specifically, 10 participants extracted the most unintuitive observations from 17 scholarly journals. These findings were reconciled within a single framework that generates 41 testable propositions. The framework assumes that an associative self system, underpinned by a vast network of schemas, governs behavior as well as enhances intuition, engagement, creativity, and cooperation. When individuals experience a threat, this system is inhibited, unless the requisite defense mechanisms to accommodate potential hazards have been developed. Furthermore, individuals attempt to distance themselves from unassailable threats, which activate an analytical system that formulates plans that could accommodate future contingencies. These plans are retained in memory or executed if individuals have acquired sufficient confidence.     

Negotiating Dominant Masculinity Ideology: Strategies Used by Gay, Bisexual and Questioning Male Adolescents

In the context of a U.S. dominant masculinity ideology, which devalues men who are not heterosexually identified, many gay, bisexual and questioning (GBQ) adolescent males must develop their own affirming and health-promoting sense of masculinity. In order to promote the well-being of GBQ young men, exploration of their reactions and responses to dominant images of masculinity is needed. We qualitatively analyzed interviews with 39 GBQ African American, Latino, and European American male adolescents (15–23 years old). Participants reported a range of responses to traditional masculinity ideologies, most of which centered on balancing presentations of masculine and feminine characteristics. Negotiation strategies served a variety of functions, including avoiding anti-gay violence, living up to expected images of masculinity, and creating unique images of personhood free of gender role expectations. These data suggest a complex picture of GBQ male adolescents’ management of masculinity expectations and serve as a basis for culturally and developmentally specific HIV prevention programs.