If a sociologist wanted to study the social meaning of pizza, he would be hampered by a lifetime of preconceptions and assumptions about pizza. it would be hard for him to think about it objectively because it is so familiar. which concept describes a process that might ?

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?