This paper focuses on the experimental findings of Shanto Iyengar with regard to media agenda-setting and a theory of priming, summarizing his work across time. Following an introduction, the next section briefly reviews five of Iyengar's experiments on agenda-setting and priming, giving an overview and conclusions for each. The final section, a discussion, is mainly addressed to comments made by other researchers regarding their interpretations of Iyengar's findings, and also includes a review of responses made by Iyengar. Thirty-eight references are attached. (SR)