Date of Award

January 2025

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

Department

Psychology

First Advisor

Joseph Miller

Abstract

The M-PACI is a personality scale based on Millon’s biosocial personality theory designed to measure emerging personality patterns in pre-adolescents (9-12 years old). There is minimal published research on this inventory, particularly in clinical contexts. For this study, we used a data set collected at a Midwestern private practice clinic where children are assessed for ADHD and learning disabilities. This study looks at how those diagnosed with ADHD differ in emerging personality patterns and current clinical signs scales compared to those in a clinical sample who have not been diagnosed with ADHD. Some studies have shown differences between children diagnosed with ADHD versus non-ADHD groups. Our hypothesis was that those in the ADHD would score significantly higher on the unruly, attention deficits, disruptive behaviors, and anxiety/fears scales. Our study found no significant differences between the ADHD and non-ADHD group on these scales. Additionally, post hoc tests revealed no significant differences between ADHD and non-ADHD groups on other personality and clinical symptoms scales. Limitations may include an underpowered study due to low participant numbers.

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