Age-publishing profiles are estimated for four fields of science using data from the 1977 Survey of Doctorate Recipients. The five measures of publishing activity used allow for analysis of the sensitivity of the age-publishing relationship to output measure. Results are presented separately for graduate faculty and faculty at nongraduate departments. Although age is found to be a fairly weak predictor of performance, in physics and earth science older scientists publish less than their youngest peers and in physiology and biochemistry older scientists publish less than their middle-aged colleagues. Given the time frame of the data, the results suggest that the graying of America''s scientific community was accompanied with slowed rates of research in higher education.