<Table> <Tr> <Th_colspan="2"> Donald Olding Hebb </Th> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> </Th> <Td> (1904 - 07 - 22) July 22, 1904 Chester, Nova Scotia, Canada </Td> </Tr> <Tr> <Th> </Th> <Td> August 20, 1985 (1985 - 08 - 20) (aged 81) Chester, Nova Scotia, Canada </Td> </Tr> <Tr> <Th> Nationality </Th> <Td> Canadian </Td> </Tr> <Tr> <Th> Alma mater </Th> <Td> Dalhousie University, McGill University, Harvard University </Td> </Tr> <Tr> <Th> Known for </Th> <Td> Cell assembly theory </Td> </Tr> <Tr> <Th> Awards </Th> <Td> Fellow of the Royal Society </Td> </Tr> <Tr> <Td_colspan="2"> Scientific career </Td> </Tr> <Tr> <Th> Fields </Th> <Td> Psychologist </Td> </Tr> <Tr> <Th> Institutions </Th> <Td> Montreal Neurological Institute, Queen's University, Yerkes Laboratories of Primate Biology, McGill University </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Donald Olding Hebb </Th> </Tr>

Hebb's six classes of factors of behavioural development