Measures of organizational commitment are as diverse as the de-
finitions. Most of these measures consist of from two- to four-item scales
that are created on an a priori basis and for which little or no validity and
reliability data are presented. For example, Grusky’s (1966) scale used
four items, consisting of company seniority, identification with the com-
pany, attitudes toward company administrators, and general attitudes
toward the company.