This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. This project studies individual differences in marmoset cognition. In human cognition it is common to observe that subjects who perform well on one task tend to do well on others, and so forth. This finding suggests that there may be a domain-general process, referred to as general intelligence, that is evoked in the solution of any kind of cognitive task. This general process is the most heritable portion of any cognitive battery. There has to date been no work asking whether a similar general process is present in a nonhuman primate. During the past year we successfully developed four tasks suitable for marmosets, including tasks that assess logical inferences, numerical discriminations, tool use, and working (short-tern) memory. We intend to develop several more tasks, and then administer the entire battery to a large sample. We also explored the possibility of using the Center s population of cotton-topped tamarins for this work.
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