This article reviews recent developments in the econometrics of early childhood human
capital and investments. We start with a discussion about the lack of cardinality in test …

Cognitive ability in childhood is positively associated with economic productivity in
adulthood. Expected gains in economic output from interventions that protect cognitive …

This paper uses scale-independent methods to contribute to the debate about how
academic achievement differences between advantaged and disadvantaged youth have …

This paper represents a methodological-substantive synergy. A new model, the Mixed
Effects Structural Equations (MESE) model which combines structural equations modeling …

Standard achievement scales aggregate test questions without considering their
relationship to economic outcomes. This paper uses question-level data to improve the …

We introduce a new approach to measuring the match between education and occupation
by using the number of college courses related to one's occupation. Previous studies have …

Recent research concludes that wage returns to cognitive skills have declined in the US We
reassess this finding. Using decomposition methods, we document the pivotal role played by …

In this paper, I study identification of a nonseparable model with endogeneity arising due to
unobserved heterogeneity. Identification relies on the availability of binary proxies that can …

This paper proposes a semiparametric method to control for ability using standardized test
scores, or other item response assessments, in a regression model. The proposed method is …

People often delay starting college or temporarily leave college to work. To examine the
welfare implication of intermittent college attendance, I incorporate flexible age-by-age …