Infant Contingency/Extinction Performance After Observing Partial Reinforcement

Social information gathering by infants 6 and 12 months old was examined as a foundation for later social learning that may be uniquely human. Infant performance on a contingency/extinction task was studied following a caregiver demonstration of the contingency on varied reinforcement schedules. Infants who observed caregivers receive any reinforcing stimulation in pretraining decreased responding over their own acquisition period, possibly because they began to habituate to the reinforcer. In extinction, infants who observed caregivers receive partial reinforcement in pretraining were more persistent in responding than others. This suggested that direct experience with partial reinforcement is not needed for greater persistence in extinction. These studies revealed details of social learning in the 1st year.     

CAPTAIN PLANET AND THE PLANETEERS:

The environmental crisis is presented as a contested cultural discourse with conflicting social and political narratives pervasively targeted at children. Textual analysis of an environmental cartoon, and interviews with the cartoon's producers and child viewers, are used to deconstruct popular themes being transmitted to children in the name of "saving the planet". The cartoon is critiqued as representing and promoting a liberal environmental paradox espousing: a simultaneous call for children to both conserve and consume; a diffusion of responsibility that supports the notion of environmental crisis as everybody's fault; simplistic, individualistic solutions to complex corporate and bureaucratic problems. Narratives of nature as a social actor are proposed as rhetorical and epistemological alternatives for the recreation of children's social, political, and environmental awareness.     

CAMPAIGN SPENDING IN CONGRESSIONAL ELECTIONS

Past research of the effects of campaign spending in Congressional elections has found, contrary to expectations, that incumbent spending lowers votes he or she receives. Our model simultaneously determines votes and spending and eliminates this anomaly. A measure comparing the incumbent's voting record to constituent preferences aids model identification. Using two-stage least squares, we find that both incumbent and challenger spending are signficant determinants of the popular vote received. Tenure and spending appear to have diminishing returns, and voters appear to punish incumbents who vote against their wishes.     

Academic incentives for students can increase participation in and effectiveness of a physical activity program

The authors sought to determine whether a greater academic incentive would improve the effectiveness and student adherence to a 12-week voluntary exercise program designed to decrease students' percentage of body fat. They randomly assigned 210 students to 1 of 2 groups with different academic reward structures. The group with the greater reward structure showed better exercise adherence and lost more body fat than those without the additional incentive. These findings suggest that an academic incentive can increase overall student adherence to a voluntary exercise program and can boost the effectiveness of the program in a university environment. The findings also have potential implications for on-campus promotion of physical activity.     

Social representations of diversity: multi/intercultural education in a South African urban school 1

The story of School X started in South Africa in 1875. At that time, the school was built for white children only. More than hundred years later, the 1994 elections demarcated the end of the apartheid era and the school enrolled black Xhosa‐speaking children for the first time. As a result, in 2004, 90% of the students were black Xhosa‐speaking. The theoretical perspectives of our study are based on notions of multicultural and intercultural education, and of diversity. Our study is embedded in a socio‐constructivist inquiry paradigm. Using questionnaires and interviews, we aimed to understand the social representations regarding diversity of a principal, a teacher, seven students and four parents in a K‐7 open school. We examined diversity of values, cultures, religions, languages, attitudes, beliefs, behaviors, etc. regarding a multi/intercultural perspective in education. We attempted to discern what the participants’ understandings of diversity were, how they identified diversity, and why they justified their practices and actions with respect to diversity.

The song can only be beautiful if we all play the same tune. (Esmé Goosen, Multimedia, 2004)

This is the title of a painting that is part of an exhibition in Nelson Mandela Metropolitan Museum of Art, Port Elizabeth, South Africa