In 2014, Ming was succeeded by Jeffrey D. Dunn. During the late 1960s, 97% of all American households owned a television set, and preschool children watched an average of 27 hours of television per week. Early childhood educational research at the time had shown that when children were prepared to succeed in school, they earned better grades and learned more effectively. Children from low-income families, however, had fewer resources than children from higher-income families to prepare them for school. Research had shown that children from low-income, minority backgrounds tested "substantially lower" than middle-class children in school-related skills, and that they continued to have educational deficits throughout school. The topic of developmental psychology had grown during this period, and scientists were beginning to understand that changes of early childhood education could increase children's cognitive growth. In the winter of 1966, Joan Ganz Cooney hosted what she called "a little dinner party" at her apartment near Gramercy Park. Attending were her husband Tim Cooney, her boss Lewis Freedman, and Lloyd and Mary Morrisett, whom the Cooneys knew socially. Cooney was a producer of documentary films at New York public television station WNDT (now WNET), and won an Emmy for a documentary about poverty in America. Lloyd Morrisett was a vice-president at Carnegie Corporation, and was responsible for funding educational research, but had been frustrated in his efforts because they were unable to reach the large numbers of children in need of early education and intervention. Cooney was committed to using television to change society, and Morrisett was interested in using television to "reach greater numbers of needy kids". The conversation during the party, which according to writer Michael Davis was the start of a five-decade long professional relationship between Cooney and Morrisett, turned to the possibilities of using television to educate young children. A week later, Cooney and Freedman met with Morrisett at the office of Carnegie Corporation to discuss doing a feasibility study for creating an educational television program for preschoolers. Cooney was chosen to perform the study. In the summer of 1967, Cooney took a leave of absence from WNDT, and funded by Carnegie Corporation, traveled the U.S. and Canada interviewing experts in child development, education, and television. She reported her findings in a fifty-five-page document entitled "The Potential Uses of Television in Preschool Education". The report described what the new series, which became "Sesame Street", would be like and proposed the creation of a company that managed its production, which eventually became known as the Children's Television Workshop (CTW).