Inevitably, participants in the practice under scrutiny have some array of motives for conformity or for deviation.  The descriptive account should, so far as possible, include an account of these motivations, but these motives must not be confused, as we have seen, with (a) the objective pattern of the behavior or (b) with the social functions of that pattern.  Inclusion of motives in the descriptive account helps explain the psychological functions subserved by the pattern and often proves suggestive with respect to the social functions (1968, p. 113).