Behav Brain Sci. 2017 Jan;40:e211. doi: 10.1017/S0140525X16001709.
The Behavioral and brain sciences
Charles Locurto
PMID: 29342680 DOI: 10.1017/S0140525X16001709
The search for general processes that underlie intelligence in nonhumans has followed two strategies: one that concerns observing differences between nonhuman species (G), the second that concerns observing individual differences within a nonhuman species (g). This commentary takes issue with both attempts to mark a general factor: Differential responding to contextual variables compromises the search for G, and the lack of predictive validity compromises g.