The endocrine system can influence behavior of an animal as early as embryonic development. this is considered an effect.
a.) organizational
b.) activational

Activational effect

The endocrine system is the body system which is responsible for controlling, activating and managing hormones. These hormones contribute to the development of a certain organism however, it also sets the impetuses and behaviors of some species for the reason that they have a bilateral effect on both the physiological and psychological states. 

I’m not really sure