The Co-op Index was meant to be a handy diagnostic tool for the organizational development of worker co-ops. Although many papers and book chapters have described its functions and diagnostic model (Stocki, Prokopowicz, Novkovic, 2012; Novkovic, Prokopowicz, Stocki, 2012; Hough & Novkovic, 2012; Stocki, & Łapot, 2014), no empirical data collected from co-ops using the tool has yet been presented.
It is the first presentation of empirical data gathered so far from eight Canadian and American co-operatives. First, we present psychometric features of the tool, particularly reliabilities of the scales. Second, we present Principal Components Analysis of the results which ended in formulating new twelve components we called Co-operative Universals. We present characteristics of the co-operatives diagnosed so far to show the applicability of the tool. We conclude the presentation with a list of future developments of the tool to make it an indispensable tool for all co-ops.