The idea that our past experiences lead us to see the world in a particular way that is difficult to change is called

perceptual constancy (Perceptual set theory)

Explanation:

Psychologists refer to perceptual constancy as that phenomena that happens as we form ideas when prior experiences make us see the world whether in the physical or space in a very particual way that with time becomes difficult to change. Indeed the expectations and interactions that we lived in the pas become strongly arrayed as we grow up , in the midst of changing circumstances there is a tendency for seein the world the way we were used to. First perceptual constancies are a theory developed for the perceptions of objects at a distance but they also apply to experiences through time.  

the money supply is the total amount of money available in the economy. how do changes in the money supply affect people and businesses?

world war i had a devastating effect on german-americans and their cultural heritage. up until that point   german-americans, as a group, had been spared much of the discrimination, abuse, rejection, collective mistrust experienced by so many different racial and ethnic groups in the history of the united states. indeed, over the years, they had been viewed as a well integrated and esteemed part of american society. all of this change with the outbreak of war.