João Souto-Maior and Mitchell Stevens revisit the famous Heckman Curve describing returns human-capital investments across the life course, to show that optimal timing depends on changes in skill relevance due to technological change. They derive trajectories for returns tied to specific skills and suggest how lengthening lifespans will also influence returns on human-capital investments.
Bending the Heckman Curve
Competing Declines in Learning Capacity and Skill Relevance Over the Life Course