Presenting a highly innovative exploration of the relationship between philosophical and psychological issues, Edwin L. Hersch argues that psychological theories and practices inescapably rest upon a series of philosophical positions - whether they are acknowledged and reflected upon or not. To examine this proposition Hersch develops his Hierarchy of Levels of Theoretical or Philosophical Inquiry Method, which involves the systematic consideration of a series of philosophical questions pertaining to the ontological, general epistemological, field-specific epistemological, and...