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Physiometrics in Salivary Bioscience
1Department of Psychology, University of Kentucky, 125 Kastle Hall, Lexington, KY, 40506-0044, USA. segerstrom@uky.edu.
International Journal of Behavioral Medicine
|May 15, 2020
Summary
Physiometrics, the measurement of biological markers like hormones, varies in stability. Understanding salivary biomarker reliability is crucial for accurate statistical modeling and robust study designs in biosciences.
Area of Science:
- Biosciences
- Statistical Modeling
Background:
- Accurate statistical models rely on sample size and measure reliability.
- Physiometrics measures biological markers like hormones and immune system products.
Purpose of the Study:
- To evaluate the reliability and stability of salivary physiometrics.
- To inform the design of future bioscience studies.
Main Methods:
- Assessed physiometric measures using correlation and generalizability theory.
- Examined equivalency and stability of measurements over time.
Main Results:
- Salivary cortisol, alpha-amylase, testosterone, and cytokines exhibit varying stability.
- Some biomarkers require multiple samples for generalizability, depending on study design.
Conclusions:
- Dedicated physiometric studies and reporting enhance salivary bioscience research.
- Improved understanding of physiometric reliability strengthens study designs.
