A seven item Likert-type scale was developed to measure self-righteousness, defined as the conviction that one's beliefs and actions are correct, especially in contrast to the beliefs and actions of others. The Self Righteousness Questionnaire (SRQ) measures three components of self-righteousness: belittlement, acceptance, and uncertainty. The instrument is designed for brevity and allows for the adjustment of items according to general or specific beliefs and behaviors. In order to test the validity and reliability of the SRQ, 111 adult runners (73 males, 38 females), aged 17-45, completed the SRQ before a 10 kilometer race. After the race 84 of those runners responded to a more specific version of the SRQ in a telephone interview. Test-retest correlations of the subscales were within the moderate range. Correlations of the items before and after the race showed responses to be remarkably stable. No sex differences were found on responses to any of the subscales. Although additional research is necessary, validity was somewhat supported by the study. Belittlement negatively correlated with loneliness and uncertainty positively correlated with loneliness and anxiety. No associations have been found between acceptance and other relevant constructs. (The SRQ and its specific adaptation for the post-race telephone survey are appended.) (BL)