The Growth Of Cluster Analysis: Tryon, Ward, And Johnson.

The growth of literature about cluster analysis is studied through an intensive analysis of the work by three men: Johnson, Tryon, and Ward. First, a history of the ideas of these men is discussed. Each of the three represented a different ideological perspective. Next, citation analysis is used to study the impact of the major publication of each man. The citation analysis suggests that there was virtually no overlap among researchers who cite the three authors. Finally, the paper concludes with comments on the cognitive vs. noncognitive factors influencing the growth of cluster analysis as an interest area.