The Collective Efficacy Scale is a 10-item Likert-type scale developed to measure “collective efficacy, defined as social cohesion among neighbors combined with their willingness to intervene on behalf of the common good”1. Collective efficacy was hypothesized and demonstrated to be a reliably measurable construct in the originating study.
Authors
Robert J. Sampson, Stephen W. Raudenbush, Felton Earls
Reliability and Validity
“The reliability with which neighborhoods can be distinguished on collective efficacy ranges between 0.80 for neighborhoods with a sample size of 20 raters to 0.91 for neighborhoods with a sample size of 50 raters.”1
References
1 R. J. Sampson, S. W. Raudenbush, F. Earls, “Neighborhoods and Violent Crime: A Multilevel Study of Collective Efficacy”, Science Magazine, Vol. 277, pp. 918-924, 15 August 1997. Retrieved from http://www.wjh.harvard.edu/soc/faculty/sampson/articles/1997_Science.pdf on 01-28-2010
