Related Experiment Video
Updated: Apr 25, 2026

Problem-Solving Before Instruction PS-I: A Protocol for Assessment and Intervention in Students with Different Abilities
Published on: September 11, 2021
Who benefits most from Head Start? Using latent class moderation to examine differential treatment effects
Brittany Rhoades Cooper1, Stephanie T Lanza
1Washington State University.
Abstract:
Head Start (HS) is the largest federally funded preschool program for disadvantaged children. Research has shown relatively small impacts on cognitive and social skills; therefore, some have questioned its effectiveness. Using data from the Head Start Impact Study (3-year-old cohort; N = 2,449), latent class analysis was used to (a) identify subgroups of children defined by baseline characteristics of their home environment and caregiver and (b) test whether the effects of HS on cognitive, and behavioral and relationship skills over 2 years differed across subgroups. The results suggest that the effectiveness of HS varies quite substantially. For some children there appears to be a significant, and in some cases, long-term, positive impact. For others there is little to no effect.
More Related Videos
Related Concept Videos
Regression Toward the Mean
Longitudinal Studies
Strategies for Assessing and Addressing Confounding
Confounding can be addressed at both the design phase of a study and through analytical methods after data...
Stereotype Content Model
Blinding
Stereotypes, Prejudice, and Discrimination

