Hood, B. M., Hauser, M. D., Anderson, L., & Santos, L. (1999). Gravity biases in a non‐human primate?. Developmental Science, 2(1), 35-41.
Pre‐school children expect falling objects to travel in a straight line even when there are clear physical mechanisms that deviate the object's path (Hood, 1995). The current study set out to determine whether this expectancy is limited to humans. Cotton‐top tamarins (Saguinus oedipus oedipus), a New World monkey species, were tested on Hood's (1995) experimental task where objects are dropped down a chimney connected by ...