Capitanio, John - Personality Dimensions in Adult Male Rhesus Macaques

The Structure of Concern Project compares many theoretical models from many disciplines to the Adizes PAEI model, arguing that they must all be reflecting the same underlying phenomenon. One concern structure model is described below.

Seeking to identify stable features of personality in Rhesus Macaque, and to evaluate the predictive power of any such findings, John Capitanio (1999) extended a 3-factor typology developed by Stevenson-Hinde et al. into the following 4-factor scheme. The revised personality dimensions were able to account for 68% of the variance in observed behavior, according to Capitanio:

P – Confident:
confident - behaves in a positive, assured manner, not restrained or tentative
aggressive - causes harm or potential harm

A – Excitable:
active - moves about a lot
excitable - over-reacts to any change
subordinate - gives in readily to others; submits easily

E – Equable:
equable - reacts to others in an even, calm way; is not easily disturbed
understanding - discriminating and appropriate responses to behavior of others
slow - moves and sits in a slow, deliberate, relaxed manner; not easily hurried

I – Sociable:
sociable - seeks companionship of others
playful - initiates play and joins in when play is solicited
curious - readily explores new situations

This scheme proved to be sufficiently predictive of stable behavioral traits over time spans of months and years that the author surmised it would be a useful tool for animal husbandry in captive macaque populations.

1. Capitanio, J. P. (1999). “Personality Dimensions in Adult Male Rhesus Macaques: Prediction of Behaviors Across Time and Situation.” American Journal of Primatology, 47, 299320.
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