Sunday 22 June 2008

Schools, Skills, and Synapses

Nobelist James Heckman has a new paper out in the The Institute for the Study of Labor (IZA) discussion paper series, IZA DP No. 3515, on Schools, Skills, and Synapses (pdf). The abstract reads
This paper discusses (a) the role of cognitive and noncognitive ability in shaping adult outcomes, (b) the early emergence of differentials in abilities between children of advantaged families and children of disadvantaged families, (c) the role of families in creating these abilities, (d) adverse trends in American families, and (e) the effectiveness of early interventions in offsetting these trends. Practical issues in the design and implementation of early childhood programs are discussed.
Heckman says
The argument of this paper is summarized by the following 15 points:
  1. Many major economic and social problems such as crime, teenage pregnancy, dropping out of high school and adverse health conditions are linked to low levels of skill and ability in society.
  2. In analyzing policies that foster skills and abilities, society should recognize the multiplicity of human abilities.
  3. Currently, public policy in the U.S. focuses on promoting and measuring cognitive ability through IQ and achievement tests. The accountability standards in the No Child Left Behind Act concentrate attention on achievement test scores and do not evaluate important noncognitive factors that promote success in school and life.
  4. Cognitive abilities are important determinants of socioeconomic success.
  5. So are socioemotional skills, physical and mental health, perseverance, attention, motivation, and self confidence. They contribute to performance in society at large and even help determine scores on the very tests that are commonly used to measure cognitive achievement.
  6. Ability gaps between the advantaged and disadvantaged open up early in the lives of children.
  7. Family environments of young children are major predictors of cognitive and socioemotional abilities, as well as a variety of outcomes such as crime and health.
  8. Family environments in the U.S. and many other countries around the world have deteriorated over the past 40 years.
  9. Experimental evidence on the positive effects of early interventions on children in disadvantaged families is consistent with a large body of non-experimental evidence showing that the absence of supportive family environments harms child outcomes.
  10. If society intervenes early enough, it can improve cognitive and socioemotional abilities and the health of disadvantaged children.
  11. Early interventions promote schooling, reduce crime, foster workforce productivity and reduce teenage pregnancy.
  12. These interventions are estimated to have high benefit-cost ratios and rates of return.
  13. As programs are currently configured, interventions early in the life cycle of disadvantaged children have much higher economic returns than later interventions such as reduced pupil-teacher ratios, public job training, convict rehabilitation programs, adult literacy programs, tuition subsidies or expenditure on police.
  14. Life cycle skill formation is dynamic in nature. Skill begets skill; motivation begets motivation. Motivation cross-fosters skill and skill cross-fosters motivation. If a child is not motivated to learn and engage early on in life, the more likely it is that when the child becomes an adult, it will fail in social and economic life. The longer society waits to intervene in the life cycle of a disadvantaged child, the more costly it is to remediate disadvantage.
  15. A major refocus of policy is required to capitalize on knowledge about the life cycle of skill and health formation and the importance of the early years in creating inequality in America, and in producing skills for the workforce.
Arnold Kling makes a good point
In the conclusion to his paper, Heckman stresses making sure that these early interventions "respect the sanctity of early family life and...cultural diversity." It is not clear that the basis for this concern is practical, or whether it is because Heckman is experiencing queasiness over promoting state intervention into family life. I can appreciate a libertarian concern with having the state take a large role in child-rearing. I am less persuaded if the concern is one of political correctness, where you want the state to intervene but then fret about the self-esteem of the families or groups where the intervention is undertaken.
(HT: Arnold Kling)

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