 However, if the group is quite heterogeneous with considerable variation among subjects, a larger number of subjects is needed (Szalay, L. B. and Kelly, R. M. (1982) “ Political ideology and subjective culture: Conceptualization and empirical assessment ,” the American Political Science Review, 76 (3), pp. 585-602.).
<coherence>  However, if the group is quite heterogeneous with considerable variation among subjects, a larger number of subjects is needed (Szalay, L. B. and Kelly, R. M. (1982) “ Political ideology and subjective culture: Conceptualization and empirical assessment ,” the American Political Science Review, 76 (3), pp. 585-602.).
 However, if the group is quite heterogeneous with considerable variation among subjects, a larger number of subjects is needed (Szalay, L. B. and Kelly, R. M. (1982) “ Political ideology and subjective culture: Conceptualization and empirical assessment ", the American Political Science Review, 76 (3), pp. 585-602.).