Theses and Dissertations

Issuing Body

Mississippi State University


Sinclair, Colleen H.

Committee Member

Giesen, Martin J.

Committee Member

McMillen, Robert

Date of Degree


Original embargo terms

MSU Only Indefinitely

Document Type

Graduate Thesis - Campus Access Only


Experimental Psychology

Degree Name

Master of Science


College of Arts and Sciences


Department of Psychology


The present study examined how environmental attitudes and behaviors can be affected using social norms. The study employed a 2 (participant position: pro-environmental or anti-environmental) × 2 (context condition: face-toace or computer mediated communication) × 2 (normative pressure: unanimous or non-unanimous) quasi-experimental design. Participant position was a nonrandomized group classification factor based on responses to a screening survey. Attitude extremity was controlled for in analyses. Participants initially anti-environmental reform and in the non-unanimous normative pressure condition had significantly less attitude change than that of those who were anti-environmental reform and in the unanimous normative pressure condition. Pro-environmental reform people were not affected by the variations in group pressure. Higher rates of conformity found in the computer mediated context did not translate into attitude change. No differences were found in political behavior. Findings suggest that advertising employing unanimous normative pressure in a face-toace interaction would persuade anti-environmentalists to become more pro-environmental.