“…Support for this interpretation comes, for the most part, from a series of studies conducted by Spielberger and his associates. The line of evidence in each of these studies is the same; namely, a strong relationship is found between conditioning in the Taffel situation and the subjects' rating of how much they wanted the experimenter to say "good" (Bryan & Lichtenstein, 1966;Doherty & Walker, 1966;Spielberger, 1962;Spielberger, Berger, & Howard, 1963;Spielberger, Bernstein, & Ratliff, 1966;Spielberger, Levin, & Shepard, 1962).…”