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Hothersall Book Cover
History of Psychology, 4/e
David Hothersall, Ohio State University

German Psychologists of the Nineteenth and Early Twentieth Centuries

Discussion Questions



1

What is the just noticeable difference? Explain how it is computed. How is the jnd related to the overall intensity of a stimulus?
2

What is a nonsense syllable? What is the primary benefit of using nonsense syllables in an experiment? Describe another way you could accomplish this goal.
3

Describe "Act Psychology." What was the general goal of this system? Who founded it? Give an example of an experiment that was conducted by an act psychologist.
4

Summarize the story of Clever Hans. Be sure to name the people involved, explain just how “clever” Hans was, and explain why this story is so often included in modern Experimental Psychology textbooks.
5

How were psychological acts investigated by Külpe and his colleagues? Give specific examples of the sorts of research conducted in his laboratory.