Complex sentence: In 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; programs created for them were widely criticized for being too violent and for reflecting commercial values.
Split into simpler sentences: In the late 1960s, 97% of all American households owned a television set. Preschool children watched an average of 27 hours of television per week; programs created for them were widely criticized for being too violent and for reflecting commercial values.