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Graduation Term


Document Type

Thesis-ISU Access Only

Degree Name

Master of Science (MS)


Department of Psychology

Committee Chair

Renee M. Tobin


The present study examined the relation between effortful control and kindergarten students' behavior before, during, and after exposure to Second Step: A Violence Prevention Curriculum (Committee for Children, 2002). Children's performance on inhibitory control (an aspect of effortful control) measures was used to predict displayed classroom behavioral changes over time. This study also investigated frequency of exposure to the Second Step curriculum. Results revealed that kindergartners with higher inhibitory control displayed better classroom behavior compared to their peers with lower inhibitory control, with female kindergartners displaying higher inhibitory control overall. There was no evidence that inhibitory control interacted with frequency of exposure to the curriculum in predicting children's behavior. In light of these results, directions for future research are offered.


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