It is posited that there are three essential elements associated with human
nature and the human personality: Animation, Accommodation, and Authorizat
ion (A(3)). These broadly construed elements are defined, and then it is sh
own how they underlie the ways humans cognitively and emotionally engage th
eir world. This explication is made possible by calling on a novel construc
tion, called a "trialogue", that formally relates attributes of cognitive e
ngagement (termed intellect) and attributes of emotional engagement to the
three essential elements. The trialogue construction constrains the interre
lationships among attributes and essential elements, enabling the internal
validity of the theory to be tested. A preliminary study with 174 participa
nts investigated the question of internal validity and found convincing evi
dence to support the basic premise of the model. The structural complementa
rities of intellect and emotional engagement may provide a better understan
ding not only of personality but also of some institutions (e.g., education
al). (C) 2001 Elsevier Science Ltd. All rights reserved.