“…A number of studies have directly tested and applied Clark and Wilson's (1961) typology to the examination of participation in voluntary block associations (Friedmann et al, 1988;Wandersman et al, 1987), voluntary political influence organizations (Knoke & Wood, 1981), and political party organizations (Clarke, Price, Stewart, & Krause, 1978;Conway & Feigert, 1968). These studies were consistent in finding that participants reported purposive and solidary motives/benefits as the most common (Friedmann et al, 1988;Wandersman et al, 1987), purposive motives as most important for initiating participation (Clarke et al, 1978;Conway & Feigert, 1968;Knoke & Wood, 1981), and solidary, purposive, and material motives as important for sustaining participation (Clarke et al, 1978;Conway & Feigert, 1968). Clark and Wilson's (1961) material, solidary, and purposive typology was also empirically tested via factor analytic procedures with mixed results.…”