Sesame street as a continuing experiment

After 22 years,Sesame Street continues to be a television experiment designed to prepare preschool children, especially poor inner-city children, for school. The success ofSesame Street can be attributed to the unique partnership the Children's Television Workshop forged early on between producers and researchers on the project. Three institutional mechanisms—curriculum seminars, theWriters' Notebook, and extensive child testing—create formal opportunities for producers and researchers to explore new topics and to learn more about preschool children and how they respond to the program. This article describes each of these mechanisms and presents a case study that exemplifies how researchers, producers, and writers worked together to developSesame Street's new geography curriculum.     

Replacement of event-generated memories of nonreinforcement with signal-generated memories of reinforcement during partial reinforcement training: Effect on resistance to extinction

Event-generated memory refers to the memory of a reinforcement (R) or nonreinforcement (N) event from an immediately preceding trial;signal-generated memory refers to the memory of a temporally remote R or N, retrieval of which is generated by presentation of a signal with which the memory is associated (Haggbloom, 1988). In each of three experiments, Group Signal-R received runway discrimination training in Phase 1 to establish a stimulus as a signal for R, and partial reinforcement training in Phase 2. An extinction test measured learning about the memory of nonreward (S^N)—learning that occurs when S^N is retrieved on R trials that follow N trials. In Group Signal-H, those R trials were accompanied by the signal for R, a treatment we hypothesized would generate retrieval of the memory of reinforcement (S^R) so that signal-generated S^R would replace event-generated S^N as the operative memory, thereby eliminating the increased resistance to extinction normally produced by PRF training. In each experiment, Group Signal-R was less resistant to extinction than was a control group conditioned to respond to-event-generated S^N. Extinction was as rapid in Group Signal-R as it was in a consistent reinforcement control group (Experiment 1) and in a group given intertrial reinforcements to interfere with learning about S^N (Experiment 3). Experiment 2 tested two alternative interpretations of the failure to learn about S^N in Group Signal-R. Those alternatives were found to be less viable than the hypothesis that the signal for R actively recruited retrieval of a competing memory.     

Making a Neighbourhood the Sesame Street Way: developing a methodology to evaluate children's understanding of race

Since its inception, Sesame Street has modelled racial harmony; however, as a result of the rising racial unrest in the United States in 1989, we launched a four-year race relations curriculum initiative designed to be more explicit about physical and cultural differences, and to encourage friendship between people of different races and cultures. To assess children's basic knowledge and attitudes about diverse children living and playing together a variety of methods were developed, including a game 'Make a Neighborhood', to assess how living in a segregated environment influences preschoolers' understanding of race relations. The game allowed us to observe how preschoolers sort drawings of children who differ by race, clothing and hairstyle into places in the neighbourhood. Results indicated that Chinese American, African American, Puerto Rican and Crow Indian preschoolers integrated homes, schools, playgrounds, churches and stores when given drawings of children from their own groups and White children. White preschoolers integrated Chinese American and White, Puerto Rican and White and Crow Indian and White children in every structure. However, White preschoolers were significantly more likely to segregate African American and White children in the homes, schools, playgrounds, churches and stores. Based on these results, segments were produced which show White children visiting an African American friend's home.