Fill in the Blanks Perspectives OverviewOnline version Fill in the blanks for each perspective by Natalie Moring 1 neurotransmitters physical hormones brain biology symptoms Biological approach This perspective explores how psychology is influenced by our . The Biological perspective seeks to explain behaviour through four different means - the ; genes ; the nervous system ( ) ; and the endocrine system - Mental disorders can be treated in the same way as illnesses ; a mental disorder can be diagnosed from its and then treated . Behaviour can be explained in terms of the body ? s physiology ( e . g . nerves , chemicals ) , function , development and evolution .