1. 20271- Public Economics Lecture 11-12 A. Casarico

2. The technology of skill formation Identify a technology of skill formation which is able to explain six facts from recent empirical literature (Cuhna and Heckman, 2007) Fact 1 Ability gaps open up at early ages

3. Children of the NLSY Average Standardized Score for PIAT Math by Permanent Income Quartiles

4. The technology of skill formation Fact 2 Evidence of sensitive and critical periods in the developing of a child –On average if a second language is learned before age 12, the child speaks it without an accent; –If syntax and grammar are not acquired early on, they appear to be very difficult to learn on in life. –IQ

5. The technology of skill formation Fact 3 High returns to remedial investments in young (rather than adolescent) disadvantaged children - Perinatal interventions that reduce fetal exposure to alcohol and nicotine have substantial long-term effects on cognition, socioemotional skills and health

6. The technology of skill formation Fact 4 If early investments are not followed up by later investments, their effects over time are reduced –Investments appear to be complementary and require follow up to be effective.

7. The technology of skill formation Fact 5 Effects of credit constraint on a child’s adult outcomes depend on the age at which they bind for the child’s family –Augmenting family income or reducing college tuition at the stage of the life cycle when a child goes to college does not go far in compensating for low levels of previous investment. –There is some evidence that credit constraints operating in the early years have effects on adult ability and schooling outcomes.

8. The technology of skill formation Fact 6 Non cognitive skills foster cognitive skills - Emotionally nurturing environments produce more capable learners