Abstract
Applying the concept of time structuring to the full range of human behavior requires a more flexible and comprehensive concept than the one presently in use, especially as TA continues to move toward fulfilling its potential for an ever widening range of applications. The familiar six-fold classification of transactions is here placed within a more inclusive classification of the ways in which human time is structured, namely a matrix consisting of five levels of behavior (mind, body, surroundings, transactions, organization) and four modes of behavior (maintenance, preparation, replay, innovation).