The results of a recent Harris poll, as reported by the Director of Research for the Corporation for Public Broadcasting (CPB), suggest that the way people use television has changed: people who watch tend to do other things while watching. While this may be true of commercial television, the same poll indicated that viewers of public broadcasting programs pay more attention and are more involved in the programs. The CPB suggests that this is because the plots of many commercial television programs tend to be very predictable, while those of public broadcasting programs are not. Other polls reported by the Corporation indicate that since 1965, there has been a 23 percent increase in audience size for public broadcasting, with 38 percent of households interviewed having watched a public television station in the last week. A dramatic increase in public television viewing was found for minority groups--this is probably due to the fact that "Sesame Street" is beginning to penetrate into these households. Additional findings were that median hours watched per week increased from 1.5 to 1.9 percent, that public television viewers are more selective in their viewing, and that public television is seen as less biased than commercial stations. (SH)