Testosterone and estradiol affect adolescent reinforcement learning

Author:

Kohne Sina1,Diekhof Esther K.1

Affiliation:

1. Faculty of Mathematics, Informatics and Natural Sciences, Department of Biology, Institute of Animal Cell and Systems Biology, Neuroendocrinology and Human Biology Unit, Universität Hamburg, Hamburg, Germany

Abstract

During adolescence, gonadal hormones influence brain maturation and behavior. The impact of 17β-estradiol and testosterone on reinforcement learning was previously investigated in adults, but studies with adolescents are rare. We tested 89 German male and female adolescents (mean age ± sd = 14.7 ± 1.9 years) to determine the extent 17β-estradiol and testosterone influenced reinforcement learning capacity in a response time adjustment task. Our data showed, that 17β-estradiol correlated with an enhanced ability to speed up responses for reward in both sexes, while the ability to wait for higher reward correlated with testosterone primary in males. This suggests that individual differences in reinforcement learning may be associated with variations in these hormones during adolescence, which may shift the balance between a more reward- and an avoidance-oriented learning style.

Publisher

PeerJ

Subject

General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology,General Medicine,General Neuroscience

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