The Longevity of Innovation

2026-06-29

AI Summary

This study investigates how specialization versus generalization among researchers influences sustained innovative capacity. Drawing on a dataset of 49 million publications by 3 million scientists from 1900 to 2020, the authors propose a novel measure of disciplinary mobility that does not rely on career age or publication volume. Integrating scientometric analysis, field mapping, and network modeling, they quantify the relationship between cross-disciplinary behavior and innovation outcomes. The findings reveal that generalists exhibit greater persistence in innovation throughout their careers, produce more innovative team-based outputs, and demonstrate distinctive advantages in knowledge integration and collaborative patterns. However, generalists publish fewer papers on average and represent a declining proportion within the scientific community.

Abstract

Modern science is organized around specialization in training and teamwork. Scientists develop deep expertise within a field and combine complementary knowledge through collaboration to solve complex problems. Yet whether specialization is the most effective path to sustained innovation remains unclear. Here we introduce a quantitative framework that distinguishes generalists from specialists based on scaling patterns of disciplinary mobility while remaining independent of career age and productivity. Applying this framework to 49 million publications produced by 3 million scientists between 1900 and 2020, we examine how research style relates to innovation, learning, collaboration, and productivity. We find that scientists who move across fields are more likely to sustain innovative contributions throughout their careers, whereas those who remain within narrow fields exhibit the age-related decline in innovation. Generalists are less anchored to the literature of their training. They are more likely to pursue research independently, and, when they collaborate, they preferentially partner with other generalists. Teams with a greater share of generalists produce more innovative research, even after accounting for differences in knowledge diversity. Despite these advantages, generalists publish fewer papers on average and have become less common over time. These findings reveal a tension between the longevity of scientific careers and the longevity of scientific innovation.

Problem

• specialization
• generalists
• innovation longevity
• disciplinary mobility
• scientific careers

Innovation

• disciplinary mobility
• scientific innovation
• generalists vs. specialists
• research collaboration
• career longevity