This chapter discusses, for both highs and lows, the first-level factors in the light of the data from analysis of the range of sequences, second-level factors, and a study of interrelationships among factors. It lists each of the first-level factors in the order of their frequency of appearance in the 228 high job-attitude sequences. The list is separated into four parts: achievement and recognition; work itself, responsibility, and advancement; salary; and a set of ten infrequently appearing factors. The factors of work itself, responsibility, and advancement are almost always associated with long-term changes in job attitudes. Since long-range attitude changes are also associated with greater performance effects, the former trio of factors are also more singularly potent for improving job effectiveness. Considering both frequency and duration of attitude effects, the three factors of work itself, responsibility, and advancement stand out strongly as the major factors involved in producing high job attitudes.