Honors Theses and Capstones

Date of Award

Spring 2018

Project Type

Senior Honors Thesis

College or School



Communication Sciences and Disorders

Program or Major

Communication Sciences and Disorders

Degree Name

Bachelor of Science

First Advisor

Kathryn Greenslade

Second Advisor

Rae Sonnenmeier

Third Advisor

Elizabeth Humphreys


This study used a retrospective practice-based research method to compare levels of internalizing and externalizing behaviors of a clinically-ascertained sample of young children with autism spectrum disorder (ASD; n=90). As measured by the Child Behavior Checklist (CBCL), internalizing and externalizing behaviors were compared to normative behavior, and between boys and girls with ASD. Findings suggest that in a clinical sample, children with ASD are more likely than typically developing children to have internalizing and/or externalizing problems. No significant sex differences were found for Internalizing Problems, Externalizing Problems, or Total Problems scores on either the parent or teacher versions of the CBCL. These findings may help clinicians better understand how children with ASD are affected by co-morbid psychiatric disorders, and could help to inform diagnosis and intervention.