118 John B. Calhoun 



cessive doublings of Nb are presented. For each Nb those values for fc, u, 

 ab, and f^a^ are given which are requisite for each member to attain on the 

 average an optimum satisfaction, do = afaa\ from social interaction. It is 

 apparent that as Nb increases, ab and ib decrease, while fc and f^^^ increase. 

 As the Nb group size increases, each individual will have more fc contacts 

 with associates, of which one-fourth wall be satisfying (i.e., fit'a^/fc = i). 

 For clarification, I might add that for each individual on the average at 

 every Nb, another one-fourth of the contacts are of the frustrating f'^p 

 type, while the remaining one-half of the contacts transpire while in the 

 refractory state which involve fp^ or fpp contacts. Values for A^6 = 12 are 

 shown in italics for reference because of the apparent importance of groups 

 of this size. It may be seen that i for Nb = 12 is only one-third that for 

 Nb = 2. Nb must increase from 12 to 121 for a similar decrease in intensity 

 of interaction to be necessary. 



In the now voluminous literature on "stress," many papers deal with the 

 physiological repercussions accompanying change in group size. Yet these 

 reveal little concerning how much physiological disturbance might be ex- 

 pected to result from a given change in group size. The prior model of 

 social interaction will now be examined to determine what insight the 

 model provides, under the assumption that it approximates reality. 



Table XI 

 Normative Relative Values of Interaction Factors" 



° All values are relative to the intensitj' of interaction, 1.0, appropriate to a group of 

 2 individuals, when n = 1.0. 



'' The a appropriate for Nb = 12. 



' 0.5 fap when a remains constant approaches 1/a as N approaches infinity. In this 

 case with a = 0.091, 1/a = 11.0. In other words 0.5 fap approaches iVj — 1. 0.5 fa,, is 

 used in the sense of fap- 



