The Effects of Atropine and Adrenergic Antagonists on Behavioral Arousal in Rats

Two experiments investigated the mechanism for changes in measures of behavioral arousal inhibition in rats following administration of atropine. In Experiment 1, 40-day-old rats were given administrations of atropine sulfate, the α-, β-adrenergic blocker labetalol, or both. The drugs, either alone or in combination, increased transport response intensity, whereas both together increased dorsal immobility durations. In Experiment 2, rats were given atropine, the β-adrenergic antagonist propranolol, the α-adrenergic antagonist phentolamine, or a combination of two of the drugs. Propranolol blocked atropine-induced increases in transport response, and phentolamine was without effect. Phentolamine, when combined with atropine, increased dorsal immobility durations. Results are discussed with respect to aspects common to both transport response and dorsal immobility.     

Giving voice to African thought in medical research ethics

In this article, I consider the virtual absence of an African voice and perspective in global discourses of medical research ethics against the backdrop of the high burden of diseases and epidemics on the continent and the fact that the continent is actually the scene of numerous and sundry medical research studies. I consider some reasons for this state of affairs as well as how the situation might be redressed. Using examples from the HIV/AIDS and Ebola epidemics, I attempt to show that the marginalization of Africa in medical research and medical research ethics is deliberate rather than accidental. It is causally related, in general terms, to a Eurocentric hegemony derived from colonialism and colonial indoctrination cum proselytization. I end by proposing seven theses for the critical reflection and appraisal of the reader.     

New Perspectives on the Child‐ and Youth‐Serving Workforce in Low‐Resource Communities: Fostering Best Practices and Professional Development

The professionals and paraprofessionals who work daily with youth in low‐resource, marginalized communities are integral to youth wellbeing; yet, their professional development, and the factors that promote it, are not well understood. In this introduction to the special issue, Understanding and Strengthening the Child‐ and Youth‐Serving Workforce in Low‐Resource Communities, we focus on understudied practitioners operating in an array of sectors and settings, such as home visitors, mental health paraprofessionals, early childhood assistant teachers, teachers in low‐income countries, school resource officers, juvenile justice staff, and after‐school and community‐based program workers. We put forward a conceptual model detailing the interactive, layered set of proximal‐to‐distal ecological factors that influence the practice and professional development of these workers, and show how papers in the current issue address these layers in their examination of workforce development. We conclude with a summary of the contributions and lessons from this work – including the value of a whole‐person approach, the importance of sharing process across research stages, and the need to build on the foundation provided by community psychology and implementation science – toward the twin goals of understanding and building the skills and strengths of the workforce, and ultimately, enhancing youth development.     

Seeking congruity for communal and agentic goals: a longitudinal examination of U.S. college women’s persistence in STEM

Social Psychology of Education - An abundance of literature has examined barriers to women’s equitable representation in science, technology, engineering, and math (STEM) fields, with many...     

The State of the Union: Contemporary Interminority Attitudes in the United States

An emerging body of work examines relations among marginalized groups, presupposing that interminority interactions display increased levels of animosity or compassion as compared to majority–minority processes. The current article compares interminority and majority–minority attitudes in a nationally representative data set, finding that racial, sexual, and gender minority groups express similar or more favorable attitudes and political support toward a minority outgroup. Experimental follow-ups explore conditions leading to more positive interminority interactions, finding that primes of similarity facilitate increased support toward a minority outgroup. A final minimal-pairs design explores the role of comparative disadvantage in these processes, suggesting that increased interminority support does not extend to a minority target group that is more privileged than the ingroup. Theoretical and empirical implications are addressed.     

Self-promotion is not ingratiating

Pairs of subjects participated in two unstructured conversations spaced one week apart. In the second session, one subject of the pair was asked to participate either as an ingratiator or as a self-promoter. Naive target subjects clearly distinguished between presenters attempting to appear likable or competent. As verified by observer subjects, ingratiators used reactive verbal and nonverbal behaviors, whereas promoters used proactive behaviors. Preparation time did not produce differential behavioral tactics. The results are discussed in terms of the use of conversational resources to produce the attributions of likability and competence.     

Effects of UCS intensity and postpeak acquisition trials on classical conditioning of the SCR

The present study examined the effects of UCS intensity and number of postpeak acquisition trials on classical conditioning and extinction of the SCR. A 2 × 3 design was employed in which subjects received either a 1, 2, or 4 mA shock UCS and either two or 16 acquisition trials beyond the peak CR. While conditioning was demonstrated during acquisition, there was no relationship between strength of conditioning and intensity of UCS. The phenomenon of stronger resistance to extinction following fewer acquisition trials (e.g., two past the peak CR) than with many (e.g., 16 past the peak CR) was demonstrated only for the groups that were conditioned with the 4 mA UCS. Resistance to extinction varied positively with UCS intensity, but only for the subjects who received two postpeak acquisition trials. Sixteen trials beyond the peak CR resulted in the UCS intensity having little or no effect on resistance to extinction.