What procedure does the national research council recommend to reduce human error?

Can i have all the nicknames of all 50 states of usa?

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?

The great depression severely affected the following groups? select all that apply. politicians, bankers, farmers, business people, factory workers