A Meta Analysis of News Media's Public Agenda Setting Effects, 1972 2015
This study used rigorous meta analytic approaches to analyze empirical agenda setting studies published from 1972 to 2015, and 67 studies that met the inclusion criteria for analysis produced a moderate grand mean effect size of 0.487. A multiple regression analysis revealed one most notable predictor that classified the basis for the study correlation as either content categories or survey participants. A multiple regression of a subgroup using content categories produced homogeneity. The mean effect size for these studies was 0.51. This is an indication of consistency in findings across agenda setting studies and the presence of strong news media's public agenda setting effects.