national attention. Davis reported that Henson was able to take "arcane academic goals" and translate them to "effective and pleasurable viewing." In early research, the Muppet segments of the show scored high, and more Muppets were added during the first few seasons. Morrow reported that the Muppets were effective teaching tools because children easily recognized them, they were stereotypical and predictable, and they appealed to adults and older siblings. Although the producers decided against depending upon a single host for Sesame Street, instead casting a group of ethnically diverse actors, they realized that a children's television program needed to have, as Lesser put it, "a variety of distinctive and reliable personalities," both human and Muppet. Jon Stone, whose goal was to cast white actors in the minority, was responsible for hiring the show's first cast. He did not audition actors until Spring 1969, a few weeks before the five test shows were due to be filmed. Stone videotaped the auditions, and Ed Palmer took them out into the field to test children's reactions. The actors who received the "most enthusiastic thumbs up" were cast. For example, Loretta Long was chosen to play Susan when the children who saw her audition stood up and sang along with her rendition of "I'm a Little Teapot." Stone stated that casting was the only aspect of the show that was "just completely haphazard." Most of the cast and crew found jobs on Sesame Street through personal relationships with Stone and the other producers. According to puppeteer Marty Robinson in 2019, longevity was common among the show's cast and crew. According to the CTW's research, children preferred watching and listening to other children more than to puppets and adults, so they included children in many scenes. Dave Connell insisted that no child actors be used, so these children were non-professionals, unscripted, and spontaneous. Many of their reactions were unpredictable and difficult to control, but the adult cast learned to handle the children's spontaneity flexibly, even when it resulted in departures from the planned script or lesson. CTW research also revealed that the children's hesitations and on-air mistakes served as models for viewers. According to Morrow, this resulted in the show having a "fresh quality," especially in its early years. Reception Ratings When Sesame Street premiered on November 10, 1969, it aired on only 67.6% of American televisions, but it earned a 3.3 Nielsen rating, which