Degree Type
Thesis
Date of Award
2018
Degree Name
Master of Science
Department
Human Development and Family Studies
Major
Human Development and Family Studies
First Advisor
Elizabeth A. Shirtcliff
Abstract
Cortisol patterns differ across both socioeconomic status and racial minority groups. Yet, whether the underlying constructs that are used to measure socioeconomic status impacts the output of cortisol differentially across racial groups is unclear. Using a secondary data analysis from the Parents Who Care longitudinal study, which integrated the biomarker cortisol as youth entered emerging adulthood, the goal of this thesis is to parse apart the common conflation of income and education into a single catchall variable.
The following data was collected in 2 waves from a group of youth who were (M=20.24; R=18.51-22.89) years of age and again approximately two years later (M=22.05; R=20.45-23.87). Data used in this study was pulled from self-reports of educational level, youth income, and household income collected from youth in both waves.
Results showed a main effect of household income (β = .142 p = .017) and a race effect on the diurnal slope of cortisol (β = .041 p <.001). For the longitudinal trajectory there was a significant effect of household income (β = -.226 p < .005). Youth income showed a significant effect on of diurnal cortisol (β = .010 p = .025) as well as an interaction of income and race on diurnal cortisol (β = -.013 p =.039).
Our findings suggest that it is not only race or income alone that influences cortisol, but instead an interaction between the two that also influences waking cortisol and its diurnal slope. Furthermore, these patterns can differ between White and Black youth not only depending on their income or racial group but also on longitudinal changes of income and education over time.
Copyright Owner
Shannin Nicole Moody
Copyright Date
2018-08
Language
en
File Format
application/pdf
File Size
104 pages
Recommended Citation
Moody, Shannin Nicole, "Effects of income and education levels on diurnal cortisol in Black and White American youth transitioning into adulthood" (2018). Graduate Theses and Dissertations. 16642.
https://lib.dr.iastate.edu/etd/16642
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