Effects of peripheral immune activation on social behavior and adrenocortical activity in aggressive mice: Genotype-environment interactions

To explore genetic-developmental differences in the biobehavioral effects of induced illness, males from two lines of mice selectively bred for high or low levels of aggressive behavior were injected with endotoxin (Escherichia coli, LPS: 0.25 mg/kg, 1.25 mg/kg, or 2.5 mg, i.p.) or saline. Body temperature, weight, and locomotor activity were monitored immediately before and 8 and 24 hr after injection. Twenty-four hours after injection, social behaviors were assessed in a 10-min dyadic test, and hypothalamus, spleen, and serum were collected. In both lines, endotoxin treatment increased behavioral immobility ("freezing") and decreased social exploration. Other effects showed line differences: Males from the high-aggressive line had a lower threshold to endotoxin-induced effects on body temperature, weight loss, spleen weight, and corticosterone. Social reactivity (startle response to mild social investigation) increased in the high-aggressive line and decreased in the low-aggressive line after treatment. In the high-aggressive line only, endotoxin decreased attack frequency and increased latency to attack. The interactions between selected line (genotype) and endotoxin treatment (environment) demonstrate that genetic-developmental differences in social and aggressive behavior may indicate the extent to which immune stimuli (e.g., bacteria, viruses, cytokines) function as "biobehavioral stressors." Aggr. Behav. 23:93–105, 1997.© 1997 Wiley-Liss, Inc.     

Bidirectional relations between different forms of prosocial behaviors and substance use among female college student athletes

Bidirectional, longitudinal relations between alcohol and marijuana use and prosocial behaviors in women college student athletes were examined. Participants were 187 female college students (M_age = 19.87 years; 91% White) who completed questionnaires on their use of marijuana and alcohol, and six forms of prosocial behaviors across 6 years (2004–2010). The findings yield overall evidence that earlier marijuana use predicted lower levels of most specific forms of prosocial behaviors for women athletes in later young adulthood. Early expressions of altruistic behaviors predicted less marijuana use in later young adulthood. Expression of public prosocial behaviors early in young adulthood predicted higher levels of hazardous drinking in late young adulthood. These novel findings have important implications for links between prosocial development and substance use in women college athletes.     

What Contributes to College Students’ Cheating? A Study of Individual Factors

To better understand the multiple individual factors that contribute to college cheating, we undertook a multivariate analysis of a national sample of 2,503 college students. Our findings indicated that demographic characteristics (e.g., gender, socioeconomic status, and year in college), character qualities (e.g., lack of self-control, others-oriented life purpose), college experience (e.g., academic preparation, extracurricular activities involvement, and working), and student perceptions and attitudes (e.g., attitude toward academic cheating, perception of faculty’s actions against cheating and cheating environment) are all significantly associated with academic cheating.     

Cultural influences for college student language brokers

Children from immigrant families often translate communication for parents, a process known as language brokering (LB). LB begins in childhood, but may continue through emerging adulthood, even when individuals are in college. We surveyed 1,222 university students with two immigrant parents and compared non-language brokers, infrequent language brokers, and frequent language brokers on a variety of ethnic, cultural, and identity measures. Significant differences emerged for cultural heritage value orientation, ethnic identity, and dimensions of acculturation with frequent language brokers scoring highest, infrequent language brokers scoring in the middle, and non-language brokers scoring the lowest on these measures. There were no significant differences on acculturative stress among these three groups. These results suggest that LB experiences may contribute to the development of psychological assets for ethnic minority, emerging adults from immigrant families.     

Dimensions of acculturation: associations with health risk behaviors among college students from immigrant families

In the present study, we examined a bidimensional model of acculturation (which includes both heritage and U.S. practices, values, and identifications) in relation to hazardous alcohol use, illicit drug use, unsafe sexual behavior, and impaired driving. A sample of 3,251 first- and second-generation immigrant students from 30 U.S. colleges and universities completed measures of behavioral acculturation; cultural values (individualism, collectivism, and self-construal); ethnic and U.S. identity; and patterns of alcohol and drug use, engagement in potentially unsafe sexual activities, and driving while (or riding with a driver who was) intoxicated. Results indicate that heritage practices and collectivist values were generally protective against health risk behaviors, with collectivist values most strongly and consistently protective. Nonetheless, heritage identifications were positively associated with sexual risk taking for Hispanics. U.S. practices, values, and identifications were not consistently related to risk behavior participation. Results are discussed in terms of bidimensional approaches to acculturation, the immigrant paradox, and implications for counseling practice.     

Techno-Science and Religious Sin: Orthodox Theology and Heidegger

This paper places certain religious ideas of Eastern Christianity about our relationship to nature critically against techno-scientific thinking and practice. Specifically, the two focal issues of the discussion are the concept of religious sin, on the one hand, and the peculiarly modern fusion of science and technology, resulting in the novel phenomenon of techno-science, on the other. Two corresponding theses are advanced: that of sin as an epistemic, and not as a moral, error, and that of the “Eucharistic” viz., celebratory relation with God. The paper then proceeds to trace significant parallels that may be discerned between the Orthodox theological view and Heidegger’s position on technology, and metaphysics more generally, culminating in the suggestion that the way out of the ‘danger’ of technology as techno-science must be found in art or religion.

Alcohol expectancies and context-specific drinking behaviors among female college athletes

Alcohol expectancies have been associated with drinking behaviors among college students. Few studies, however, have focused on researcher-labeled "positive" and "negative" expectancies as well as the valuations (i.e., desirability) of these expectancies. Moreover, research on the correlates of heavy drinking among female college athletes remain relatively sparse, despite the prevalence of elevated alcohol use in this population. We examined the associations of expectancies and valuations with frequency of heavy drinking and context-specific drinking behaviors. The sample consisted of 145 female college athletes (mean age=19.6; range=17 to 22) who completed self-report surveys and indicated alcohol use in the past 30 days. Regression analyses indicated that favorable valuations of negative expectancies were related to heavy drinking, and that valuations accounted for significant proportions of variance in the model. Elevated endorsement of negative expectancies was also associated with the perceived likelihood of heavy use in convivial and personal-social drinking contexts, and favorable valuations of these expectancies accounted for significant variance in these models. These findings highlight the relevance of negative expectancies and valuations with respect to heavy drinking and context-specific drinking behaviors among female college athletes. The perception of "negative" effects of alcohol as "positive" could help explain the high rates of problematic drinking among female athletes. Future research considerations and potential implications for assessment and prevention efforts are discussed.     

Sensation seeking and danger invulnerability: Paths to college student risk-taking

This study examines the roles of sensation seeking and invulnerability as predictors of health compromising behaviors in a multiethnic sample of 1690 emerging adult college students (mean age = 19.8, range 18–25 years) from nine US colleges and universities. Participants completed the Arnett Sensation Seeking Inventory and the Adolescent Invulnerability Scale; and reported how often they had participated in a set of health compromising risk behaviors (i.e., substance use, impaired driving, and sexual behaviors) in the 30 days prior to assessment. Sensation seeking and danger invulnerability scores were moderately correlated (r = .30). Findings from a series of multivariate Poisson regression analyses suggest that when considered simultaneously as predictors, sensation seeking appears to be a general risk factor associated with engagement in a variety of risk behaviors, whereas danger invulnerability is primarily a factor in those risk behaviors that are less common among peers (e.g., hard drug use, casual sex, and driving while intoxicated).