Helen Is Examining the Question of When People Help

Multiple Choice

Helen is examining the question of when people help.She is concerned about validity,so she conducts an experiment.On the streets of Toronto,she pretends to keel over from a heart attack and records how many people offer help.She performs this act both in the downtown area and in a small suburb.Given the design of her study,Helen was most concerned about the ________ of her research.

A) internal validity
B) replicability
C) operational realism
D) mundane realism
E) psychological realism