19 Publications
2025
Field Methods for Investigating Onset and Progression of Middle Childhood Physical, Hormonal, Cognitive and Social Development. American Journal of Human Biology
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"We Have Never Seen These Things in Our Entire Lives": Perceived Impacts of and Responses to Climate Change Among Sidama Agropastoralists Residing Near Hawassa, Ethiopia. CULTURE AGRICULTURE FOOD AND ENVIRONMENT
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What makes mothers happy and unhappy during pregnancy and postpartum? A qualitative investigation of beliefs from Gamo mothers in Southern Ethiopia. Infant Mental Health Journal: Infancy and Early Childhood
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What makes mothers happy and unhappy during pregnancy and postpartum? A qualitative investigation of beliefs from Gamo mothers in Southern Ethiopia. INFANT MENTAL HEALTH JOURNAL-INFANCY AND EARLY CHILDHOOD
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2023
DHEAS and nutritional status among Sidama, Ngandu, and Aka children: Effects of cortisol and implications for adrenarche. American Journal of Human Biology
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The Sidama Model of Human Development. Human Nature
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The Sidama Model of Human Development. HUMAN NATURE-AN INTERDISCIPLINARY BIOSOCIAL PERSPECTIVE
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2022
Applying minimally invasive biomarkers of chronic stress across complex ecological contexts. American Journal of Human Biology
De Caro, J.A. and Helfrecht, C.
 
Effects of Family Demographics and Household Economics on Sidama Children’s Nutritional Status. Human Nature
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Effects of Family Demographics and Household Economics on Sidama Children s Nutritional Status. HUMAN NATURE-AN INTERDISCIPLINARY BIOSOCIAL PERSPECTIVE
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Poverty and neglected tropical diseases in the American Rural South. ANTHROPOLOGY & MEDICINE
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2020
Life history and socioecology of infancy
American Journal of Physical Anthropology. | Journal Article
 
Life history and socioecology of infancy. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
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2018
DHEAS patterning across childhood in three sub-Saharan populations: Associations with age, sex, ethnicity, and cortisol. AMERICAN JOURNAL OF HUMAN BIOLOGY
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Social networks, cooperative breeding, and the human milk microbiome. AMERICAN JOURNAL OF HUMAN BIOLOGY
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2016
Sibling Effects on Nutritional Status: Intersections of Cooperation and Competition Across Development. AMERICAN JOURNAL OF HUMAN BIOLOGY
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2014
Cooperative Breeding and Aka Children s Nutritional Status: Is Flexibility Key? AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY
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2010
Interpersonal Aggression among Aka Hunter-Gatherers of the Central African Republic: Assessing the Effects of Sex, Strength, and Anger
Hess, NicoleHess, NicoleHelfrecht, CourtneyHelfrecht, CourtneyHagen, EdwardHagen, Edward HSell, AaronSell, AaronHewlett, Barry S and Hewlett, Barry
Human Nature : An Interdisciplinary Biosocial Perspective, vol. 21, (no. 3), pp. 330-354, Oct 2010. | Journal Article
 
Interpersonal Aggression among Aka Hunter-Gatherers of the Central African Republic. HUMAN NATURE-AN INTERDISCIPLINARY BIOSOCIAL PERSPECTIVE
. | Journal Article