holism/reductionist

• Holism


  theory that proposes that it only makes sense to study an indivisible system rather its constituent parts
• reductionism 


  The belief is that human behaviour is best explained by breaking it down into smaller constituent parts.
• Biological reductionist 


  A form of reductionism which attempts to explain social and psychological phenomena at a lower biological level
• environmental reductionism 


  the attempt to explain all behaviour in terms of stimulus-response links that have been learned through experience.