Empowerment Scale. The Empowerment Scale is a 28-item instrument designed to measure subjective feelings of empowerment in which respondents answer questions on a four-point scale ranging from Strongly Agree to Strongly Disagree. The scale was developed to reflect a consensual definition of empowerment developed by consumers of mental health services and has been demonstrated to have good consistency and internal reliability, as well as good factorial validity and known groups validity (Rogers, Chamberlain, Ellison, & Crean, 1997). [1]
Recent analyses from a multi-site study of persons with serious psychiatric disability confirm the scale's good internal consistency and convergent validity; however, additional factor analyses suggest a different factor structure with this large cohort of 1,800 individuals (Rogers, Ralph, Salzer, DeForest, &Sangster, under review).
http://psychservices.psychiatryonline.org/cgi/content/full/50/7/959