Richland, L. E., & Burchinal, M. R. (2013). Early Executive Function Predicts Reasoning Development. Psychological Science, 24, 87-92.
New research findings from the University of Chicago and the University of North Carolina at Chapel Hill demonstrate that children begin to show signs of higher-level thinking skills as early as 4.5 years of age. Using large-scale longitudinal data from the Study of Early Child Care and Youth Development study, the authors examined tests children took at age 4.5, when they were in first grade, third grade, and at age 15. Findings showed a strong relationship between high scores among children who, as preschoolers, had strong vocabularies and were good at monitoring and controlling their responses (executive function) to later ability on tests of understanding analogies. Research suggests that executive function may be trainable through pathways such as preschool curriculum, exercise, and impulse control training.