Salivary Cortisol Reaction Norms in Zoo-Housed Great Apes: Diurnal Slopes and Intercepts as Indicators of Stress Response Quality by Verena Behringer, Jeroen M. G. Stevens, Ruth Sonnweber

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Chimpanzee intellect: personality, performance and motivation with touchscreen tasks by Drew M. Altschul, Emma K. Wallace, Ruth Sonnweber, Masaki Tomonaga, Alexander Weiss

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Measurement of Salivary Cortisol in Two New World Primate Species by Martina Stocker, Eoin P. O’Sullivan, Rupert Palme, Eva Millesi, Ruth Sonnweber

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Plasma Testosterone and Androstenedione Levels Follow the Same Sex-Specific Patterns in the Two <i>Pan</i> Species by Ruth Sonnweber, Jeroen M. G. Stevens, Gottfried Hohmann, Tobias Deschner, Verena Behringer

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Average phenotype but not plasticity in two metabolic hormones covary in wild female bonobos (Pan paniscus) by Ruth Sonnweber, Gottfried Hohmann, Gottfried Hohmann, Jeroen M. G. Stevens, Tobias Deschner, Tobias Deschner, Barbara Fruth, Barbara Fruth, Barbara Fruth, Anna-Lena Fiedler, Niina O. Nurmi, Verena Behringer, Verena Behringer

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Circadian Rhythms of Urinary Cortisol Levels Vary Between Individuals in Wild Male Chimpanzees: A Reaction Norm Approach by Ruth Sonnweber, Yimen G. Araya-Ajoy, Verena Behringer, Tobias Deschner, Patrick Tkaczynski, Pawel Fedurek, Anna Preis, Liran Samuni, Zinta Zommers, Cristina Gomes, Klaus Zuberbühler, Klaus Zuberbühler, Roman M. Wittig, Roman M. Wittig, Catherine Crockford, Catherine Crockford

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