This book has grown out of an attempt to harmonize two
different tendencies, one in psychology, the other in
physics, with both of which I find myself in sympathy,
although at first sight they might seem inconsistent. On the
one hand, many psychologists, especially those of the
behaviourist school, tend to adopt what is essentially a
materialistic position, as a matter of method if not of
metaphysics. They make psychology increasingly
dependent on physiolo ...