The primary objective of the present study was to assess the stability and generality of the Level I: Life Styles Inventory's factor structure. The importance of the objective emerged from a discrepancy between the conceptual model and the inventory's derived factor structure. This self-report inventory was constructed to measure 12 thinking patterns or life styles and is used by business managers for organizational and individual development. Analysis of the data from 116 college students yielded a three-factor solution that was similar in communalities, percent variance accounted for, and factor pattern coefficients to those from the one previous study. The factors were People/Security, Satisfaction, and Task/Security. Those similarities existed despite differences between the studies in subjects, method of extraction, and sample size. Evidence supported a conclusion for the factor invariance and generality of the inventory.