Early publishing momentum forecasts lifelong research productivity

A large-scale study of 320,564 researchers from 38 OECD countries over up to 50 years (analyzing up to 1.8 billion citations) finds that being a high performer early in a career is the strongest predictor of remaining in the top productivity tier later. The likelihood of late-career success rises with early output, larger teams, and more international collaborations, with notable but varying gender-by-discipline patterns and some disciplines showing higher top-decile correlation for men. A small share of researchers do rise from bottom mid-career to top late-career (about 1.4%), highlighting rare but meaningful outliers. Most researchers stay in their initial productivity decile, reinforcing the accumulative advantage idea that early success tends to beget ongoing productivity. This is the largest study of its kind, spanning 16 disciplines and providing broad cross-country validation of prior findings.