Steven PIANTADOSI (UC Berkeley Psychology, Computation and Language Lab) has given a talk.
http://colala.berkeley.edu/
Short abstract:
The reason why human cognition differs qualitatively from other species has been widely debated. Most theories of human distinctiveness propose specific new representational capacities or biases, often thought to arise through a small evolutionary change. Here, we review these “silver bullet” theories and argue that evidence supporting them is confounded by more general information-processing differences. We instead argue that human distinctiveness arises through a broad, domain-general ability to process information and share it among systems like memory, attention, and learning. Such a change explains regularities across numerous subdomains of cognition, behavioral comparisons between species, phenomena in human development, and the persistent role of capacity constraints in adult cognition. This theory is also consistent with comparative evidence about neural evolution and integrates computational results showing how memory fundamentally constrains the ability of any system to represent hierarchies, patterns, and abstract generalizations.