Abecedarian Early Intervention Project

The control group was provided with nutritional supplements, social services, and health care to ensure that these factors did not affect the outcomes of the experiment.

[4] All the 111 infants were identified as "high risk" based on maternal education (which was on average 10th grade), family income, and other factors.

[6] The areas covered were cognitive functioning, academic skills, educational attainment, employment, parenthood, and social adjustment.

[9] The project concluded that high quality, educational child care from early infancy was therefore of utmost importance.

Among other things, they have pointed out analytical discrepancies in published reports, including unexplained changes in sample sizes between different assessments and publications.

Spitz has suggested that the IQ difference between the intervention and control groups may have been latently present from the outset due to faulty randomization.

"Early Childhood Education: Young Adult Outcomes From the Abecedarian Project," Applied Developmental Science, 2002, vol.

"The Development of Cognitive and Academic Abilities: Growth Curves From an Early Childhood Educational Experiment," Developmental Psychology, 2001, vol.