Looking back over the five years of Sesame Street's existence, it is possible to discern changes in the program in the areas of production, the role of research, and its audience; it is also possible to see the vast impact that the educational television show has had on preschool children both in the United States and abroad. The show's educational goals have changed from teaching numbers, letters, geometric forms, relationships, classification, reasoning and problem solving to include affective goals which relate to helping a child to learn to cope with failure and obstacles and to participate in social groups. The production has moved from its original rather frenetic pace to one which is softer and gentler in tone and more relaxing in effect. Research has been and continues to be an integral part of the planning process at CTW, concentrating in recent years on the specific needs of bilingual and bicultural children. The audience that Sesame Street attracted in the U.S. lead to other versions of the show for Latin America, Germany, Canada, Australia, and New Zealand. A number of studies has confirmed the show's ability to teach and to attract large audiences composed both children and adult. (JY)