@article {309814, title = {Great apes{\textquoteright} risk-taking strategies in a decision making task.}, journal = {PLoS One}, volume = {6}, year = {2011}, month = {2011}, pages = {e28801}, abstract = {

We investigate decision-making behaviour in all four non-human great ape species. Apes chose between a safe and a risky option across trials of varying expected values. All species chose the safe option more often with decreasing probability of success. While all species were risk-seeking, orangutans and chimpanzees chose the risky option more often than gorillas and bonobos. Hence all four species{\textquoteright} preferences were ordered in a manner consistent with normative dictates of expected value, but varied predictably in their willingness to take risks.

}, keywords = {Animals, Decision making, Hominidae, Risk-Taking, Species Specificity}, issn = {1932-6203}, doi = {10.1371/journal.pone.0028801}, author = {Haun, Daniel B M and Nawroth, Christian and Call, Josep} }