Psychology Commons^™

Comparison Of Cortisol Samples In The First Two Weeks Of Life In Preterm Infants, Tiffany A. Moore, Kendra K. Schmid, Jeffrey French

Psychology Faculty Publications

Background: Growing literature on negative childhood stress emphasizes the need to understand cortisol values from varying biomarker samples.

Objective: This work aimed to examine cortisol samples for usability, associations, and individual stability in neonates.

Subjects: The sample consisted of preterm infants (n=31).

Materials and methods: Analyses on cortisol collected from cord blood and from saliva and urine samples on days 1, 7, and 14 included Spearman correlations and paired t-tests.

Results: Usability rates were 80.6% (cord blood), 85.9% (saliva), and 93.5% (urine). Salivary and urinary cortisol levels had significant correlation on day 1 only (p=0.004). Significant differences in individual stability …

Domestication Affects The Structure, Development And Stability Of Biobehavioural Profiles, Sylvia Kaiser, Michael B. Hennessy, Norbert Sachser

Psychology Faculty Publications

Domestication is an evolutionary process during which the biobehavioural profile (comprising e.g. social and emotional behaviour, cognitive abilities, as well as hormonal stress responses) is substantially reshaped. Using a comparative approach, and focusing mainly on the domestic and wild guinea pig, an established model system for the study of domestication, we review (a) how wild and domestic animals of the same species differ in behaviour, emotion, cognition, and hormonal stress responses, (b) during which phases of life differences in biobehavioural profiles emerge and (c) whether or not animal personalities exist in both the wild and domestic form. Concerning (a), typical …