Marketers must first perceive ethics and social responsibility to be important before their behaviors are likely to become more ethical and reflect greater social responsibility. However, little research has been conducted concerning marketers' perceptions regarding the importance of ethics and social responsibility as components of business decisions. The purpose of this study is to develop a reliable and valid scale for measuring marketers' perceptions regarding the importance of ethics and social responsibility. The authors develop an instrument for the measurement of the perceived role of ethics and social responsibility (PRESOR). Evidence that the scale is valid is presented through the assessment of scale reliability, as well as content and predictive validity. Finally, future research needs and the value of this construct to marketing are discussed.