DO CURRENT MEASURES OF DIMENSIONS OF SOURCE CREDIBILITY PRODUCE STABLE OUTCOMES IN REPLICATED TESTS

Over a period of one year, data were obtained from four groups of univ ersity students to compare the stability of scores on the McCroskey an d Jenson Source Credibility Scale and the Leathers Personal Credibilit y Scale in repeated tests. Using pre- and posttest scores, perceptions of President Clinton were obtained at four intersections while percep tions of Hillary Clinton, Jerry Brown, George Bush, and Ross Perot wer e obtained on a single date. The two scales used in the test yield app roximate explanations of variance and coefficients alpha across the 16 analyses. The results suggest that current conceptualization and meas urement of source credibility do not provide consistent dimensions on repeated tests.