Matching Kin (image) Max Planck Institute for Evolutionary Anthropology Share Print E-Mail Caption Example of kin discrimination trial. A paternal line same-sex trial, with father displayed uppermost and two alternative matches below. The correct choice (juvenile son) is the lower-left image. Credit Kazem et al. Usage Restrictions The image may only be used with appropriate caption or credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.