Bertrams, Alex; Zäch, Myriam; Minkley, Nina (2024). Comparison of human hair cortisol concentration stability for 1-year and 2-year test-retest intervals. (In Press). Stress and health, e3465. Wiley-Blackwell 10.1002/smi.3465
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Human hair cortisol concentration (HCC) has previously been found to be highly stable for a 1-year interval (r = 0.73) in terms of a product-moment correlation. The present study aimed to replicate this finding and compare HCC stability regarding 1-year and 2-year test-retest intervals. Female university students (N = 39) provided hair strands twice (t1 and t2) at intervals of 1 (n = 21) or 2 years (n = 18). Multiple regression analysis predicting HCC at t2 revealed a significant interaction term (HCC at t1 × time interval condition). It was determined that HCCs were substantially related for the 1-year interval but unrelated for the 2-year interval. The findings were not attributable to potential influences, such as hair treatment. The product-moment correlation showed nearly identical consistency with previous research regarding the 1-year test-retest interval. There was no significant product-moment correlation for the 2-year interval. Overall, these findings indicate that within a temporal framework of 1 year, HCCs may be stable predictors in correlational studies where the focus is on the rank orders of measured values.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
07 Faculty of Human Sciences > Institute of Education 07 Faculty of Human Sciences > Institute of Education > Educational Psychology |
UniBE Contributor: |
Bertrams, Alexander Gregor, Zäch, Myriam Agnes Margarethe |
Subjects: |
300 Social sciences, sociology & anthropology > 370 Education |
ISSN: |
1532-3005 |
Publisher: |
Wiley-Blackwell |
Language: |
English |
Submitter: |
Pubmed Import |
Date Deposited: |
15 Aug 2024 08:44 |
Last Modified: |
16 Aug 2024 00:16 |
Publisher DOI: |
10.1002/smi.3465 |
PubMed ID: |
39141658 |
Uncontrolled Keywords: |
biological markers hair cortisol human reliability stability |
BORIS DOI: |
10.48350/199708 |
URI: |
https://boris.unibe.ch/id/eprint/199708 |