Unit 4 Essay
Prompt: What was the variability hypothesis? How was it investigated by Helen Thompson and
Leta Hollingsworth? What impact did
their work have on the hypothesis?
Brief History of Modern Psychology
Ludy T. Benjamin Jr., 2019
John Wiley & Sons, Inc.
Chapter 10 (pages 159-178)
500-750 words (okay to go over)
Define the variability hypothesis
Introduce Helen Thompson and Leta Hollingsworth
and provide history and field of study
What impact did their work have on the
The paper should be written in Times New Roman, double space
between 500-750 words. The paper should
follow standard essay format in MLA style—including introduction, body, and
conclusion. No cover page is necessary. Works cited page needs to be
included. Please use the text referenced
above. You can use other sources but in-text citations are required as well as including them in the works cited page.