Regulation of hypothalamic-pituitary-adrenal activity in response to cognitive therapy in patients with generalized anxiety disorder

The aim of this study was to evaluate the efficacy of cognitive therapy (CT) in the treatment of generalized anxiety disorder (GAD), as it would be reflected through both psychological and psychoneuroendocrinological parameters. For this purpose, a group of outpatients with GAD were treated with CT for up to a maximum of 24 sessions. In order to assess psychological and biological changes, anxiety-related symptoms were evaluated according to the Hamilton Anxiety Rating Scale (HAM-A), and the hypothalamic-pituitary-adrenal (HPA) function was determined through assessment of circulating cortisol levels. A significant decrease in the HAM-A scores, along with significant changes in plasma cortisol levels, were observed after completion of treatment with CT. These observations contribute to demonstrate that the effect of certain psychotherapeutic approaches, such as CT, may be observed at both psychological and biological levels.     

Experiences of demand and control in daily life as correlates of subclinical carotid atherosclerosis in a healthy older sample.

Daily experiences of demand and control were examined as correlates of carotid artery atherosclerosis among healthy adults (ages 50-70). Mediating effects of ambulatory blood pressure (ABP) were also explored. Participants (n=337) collected ABP and recorded daily experiences, using electronic diaries, over two 3-day periods. Carotid artery intima-medial thickness (IMT) was assessed using ultrasonography. Participants reporting higher task demands during daily life showed larger IMT, after adjustment for demographic covariates. This association was not limited to workplace ratings or to employed individuals. The association was mediated, in part, by daytime systolic blood pressure. Previous findings linking job stress with cardiovascular disease may reflect the broader impact of daily psychological demands, not necessarily associated with the workplace.     

Mutuality and reciprocity in the psychological contracts of employees and employers

The authors assessed the joint perceptions of the employee and his or her employer to examine mutuality and reciprocity in the employment relationship. Paired psychological contract reports were obtained from 80 employee-employer dyads in 16 university-based research centers. On the basis of in-depth study of the research setting, research directors were identified as primary agents for the university (employer) in shaping the terms of employment of staff scientists (employees). By assessing the extent of consistency between employee and employer beliefs regarding their exchange agreement, the present study mapped the variation and consequences of mutuality and reciprocity in psychological contracts. Results indicate that both mutuality and reciprocity are positively related to archival indicators of research productivity and career advancement, in addition to self-reported measures of Met Expectations and intention to continue working with the employer. Implications for psychological contract theory are presented.     

Psychological contract and organizational citizenship behavior in China: investigating generalizability and instrumentality

This study examined the generalizability of psychological contract forms observed in the West (D. M. Rousseau, 2000) to China. Using 2 independent samples, results confirmed the generalizability of 3 psychological contract forms: transactional, relational, and balanced. This study also examined the nature of relationships of psychological contracts with organizational citizenship behavior (OCB). In particular, this study explored the role of instrumentality as a mediating psychological process. The authors found evidence that instrumentality mediates the relationship of relational and balanced forms with OCB; however, the transactional contract form is directly related to OCB. The authors discuss the implications of these results for the meaning of psychological contracts and OCB in China and raise issues for future research.     

Latent growth curve analyses of peer and parent influences on smoking progression among early adolescents.

Social influences on smoking uptake were examined in latent growth curve analyses of data from 1,320 youths assessed 5 times during 6th to 9th grade. Initial smoking stage predicted increases in number of friends who smoked, indicating selection; however, initial number of friends who smoked did not predict smoking stage progression, indicating no significant effect of socialization. Associations over time among smoking stage progression, affiliation with friends who smoke, and parenting behaviors were significant, suggesting dynamic, reciprocal relationships. Parental involvement, monitoring, and expectations provided direct protective effects against smoking progression as well as indirect effects, by limiting increases in number of friends who smoke. These results are consistent with the peer selection hypothesis, confirm the powerful association over time of social influences with smoking, and provide the first evidence that parenting behavior may protect against smoking progression by limiting increases in number of friends who smoke.     

Intimacy and the magnitude and experience of episodic relational uncertainty within romantic relationships

This paper seeks to clarify the association between the intimacy and the magnitude of relational uncertainty generated by specific events within romantic relationships. More specifically, we suggest that episodic relational uncertainty peaks at moderate levels of intimacy. We conducted a cross–sectional study in which 328 romantic relationship participants reported their reactions to a hypothetical relational uncertainty increasing event. Although the effect size was small, findings documented a curvilinear association between intimacy and episodic relational uncertainty. Further, hierarchical regression results supported our predictions about the effects of intimacy and episodic relational uncertainty on people’s reactions to the events. We discuss the implications of our findings for understanding the roles of both intimacy and episodic relational uncertainty within romantic relationships.     

Peritraumatic dissociation and experiential avoidance as predictors of posttraumatic stress symptomatology

This study examined whether peritraumatic dissociation serves as a proxy risk factor for experiential avoidance in its relationship with posttraumatic stress disorder (PTSD) symptomatology. One hundred eighty-five trauma survivors completed measures that assessed for peritraumatic dissociation, experiential avoidance, and PTSD symptom severity. The results indicated that peritraumatic dissociation and experiential avoidance were significantly related to PTSD symptomatology at baseline. However, after initial levels of PTSD symptomatology were taken into account, only experiential avoidance was related to PTSD symptoms both 4- and 8-weeks later. These results indicate that peritraumatic dissociation is not a proxy risk factor for experiential avoidance and contributes to the growing body of literature indicating that experiential avoidance is an important factor related to the psychological symptoms experienced by trauma survivors.     

Multimethodological approach to examining risk-taking

Research on risk-taking behavior has shown to yield inconsistent findings. Three studies were conducted using four different analysis techniques. The first study used a phenomenological approach and qualitative analysis to gain an understanding of risk-taking. A model of factors relating to risk-taking was developed and tested in a second study. The third study was conducted to develop scales of risk and used magnitude estimation and multidimensional scaling techniques. Results from the studies confirmed the multidimensionality of the construct of risk-taking. Also indicated was a gender difference in risk-taking behavior and perception. These studies expand our knowledge of risk-taking behavior in that 1) a method of categorizing risks was developed, 2) gender similarities and differences in risk-taking were explored, and 3) perceived magnitude and underlying dimensions of risk were developed.     

Place recognition and way finding by children and adults

Children and adults were escorted on their first walk across our university campus and were periodically led off the original route during the return trip. During the return, we stopped prior to intersections on and off the original route to obtain estimates of place recognition accuracy and confidence. The subjects were then asked to point to the path that led back to the start and were corrected if wrong. Accuracy of place recognition was intermediate in a way-finding task requiring reversal of an incidentally learned novel route. However, accuracy increased as subjects were farther from the original route, indicating that the presence of novel landmarks boosted the discrimination of old and new places. Eight-year-old children were less accurate than 12-year-old children and 25-year-old adults, who did not differ in accuracy. There was a similar age difference in the ability to point to the direction to return when subjects correctly recognized that they were off route. The results are used to develop a model of way finding by place recognition.