First Advisor
Wright, Stephen
First Committee Member
Parnell, Kenneth
Second Committee Member
Weingartner, Angela
Degree Name
Doctor of Philosophy
Document Type
Dissertation
Date Created
8-2024
Department
College of Education and Behavioral Sciences, Applied Psychology and Counselor Education, APCE Student Work
Abstract
Perfectionistic tendencies have increased substantially over the past 30 years (Curran & Hill, 2019), with additional noticeable increases of both perfectionism and mental health issues since the start of the Covid-19 pandemic (Flett & Hewitt, 2020a). Considered a transdiagnostic process that significantly impacts clinical treatment for a wide array of mental health concerns (Limburg et al., 2017), limitations of current perfectionism measurement necessitate the creation of a scale that can inform prevention and intervention as well as further our understanding of this phenomenon. The purpose of this study was to develop and provide initial validation for a new perfectionism measure that has utility in both clinical and research settings. An initial item-pool was generated though focus groups, expert review, and theoretical considerations. Participants (N = 500) were recruited from an online crowd-sourcing platform (www.prolific.co) and both Classical Test-Theory and Item-Response Theory analysis were utilized to develop the scale and provide initial support for its reliability and validity. Thus, the 30-item Multidimensional Therapeutic Assessment of Perfectionism (MTAP) incorporating five core facets of perfectionism was created based on the integration of the 2 X 2 Model of Perfectionism (Gaudreau et al., 2018) and the Comprehensive Model of Perfectionistic Behavior (Hewitt et al., 2017). Results provided initial support for strong reliability and validity as well as measurement invariance across gender, race/ethnicity, and sexual orientation. Implications for counseling psychologists in both research and clinical practice are discussed, as well as limitations and directions for future research.
Abstract Format
html
Extent
186 pages
Local Identifiers
Martell_unco_0161D_11239.pdf
Rights Statement
Copyright is held by the author.
Recommended Citation
Martell, Jordan Lynn, "Development and Validation of an Integrated Multidimensional Perfectionism Scale for Use in Multiple Contexts Using Item-Response Theory" (2024). Dissertations. 1096.
https://digscholarship.unco.edu/dissertations/1096