What did psychologists harry and Margaret hallow attempt to do with lab experiments?

What is a stereotype give an example? What is the control group in the stroop effect? What is a persuasive eassay? What would be the effect on the learner if educational psychology were closely patterned to the American psychology? What are the consequences and benefits of conformity? What perception of newborns are far inferior to adults? What is a hypothesis that you can use about prostitution? How do Rikki's and nag's attitudes toward teddy's family differ in Rikki tikki tavi? How did Ebbinghaus contribute to psychology? Is an IQ of 137 average for a 15 year old male? What is perception of others? Which character trait is shown by accepting people who are different than you are? What are the result of groupthink? What do mood watch colors stand for? What does that mean if the guy you like is always facing you when he sits? What does 'you've got more nerve than brain' mean? Match each type of consumer influence with an example of the influence in action? How does highlighting and thinking with symbols similar? Give 2 examples of how stereotypes and labels can be created? Ratio of positive peer pressures is to negative peer pressures?

What did psychologists harry and Margaret hallow attempt to do with lab experiments?