What keeps people in jobs or occupations is the central theme of four studies that interpret workers' attitudes toward job-changing in the light of their work experience as well as their expectations for the future.

Gladys Palmer, in collaboration with Herbert S. Parnes of Ohio State University and Richard C. Wilcock of the University of Illinois, has experimented in the key study with analyses designed to measure the strength of a person's attachment to his or her occupation or employer. Attitude questions are given a time dimension by checking them against the job histories of...