A study examined doctorate completion time in 11 scientific and engineering fields for 1967-86. On average, a 20 percent increase in completion time was found. Four measures of time are compared. (Author/MSE)

A study of 723 doctoral students investigated the relationship between time taken to complete the degree and economic factors, including employment hours, study hours, household income, indebtedness, amount and type of aid, and part-time student status. Field of study and foreign/domestic student status were also considered. (Author/MSE)

A study investigated differences in the length of time taken to earn a doctoral degree in three disciplines--chemistry, English, and psychology. The clearest findings emerged for psychology, where institutional variables affecting time to degree concerned faculty accessibility and department size. (Author/MSE)

A study of 154 recent graduates of York University (Ontario) doctoral programs in natural sciences, social sciences, and humanities investigated the relationship of gender, discipline, characteristics of the supervisory relationship, student financial situation, participation in teaching and research assistantships, and enrollment status to the…