RESEARCH STUDY 9.3

question 9

Essay

RESEARCH STUDY 9.3
Dr. Phillips is a cognitive-developmental psychologist who studies how children learn mathematical principles. His current interest is in studying how children learn multiplication. He recruits 54 second graders who have not yet learned how to multiply numbers to participate in his study. He is curious as to whether different teaching styles lead to better mastery of the subject. One condition (A) involves having students read a chapter on multiplication from their textbook. One condition (B) involves having students watch a video of cartoon characters explaining multiplication. One condition (C) involves having students being taught multiplication from a teacher. One condition (D) involves having students being taught multiplication by a fourth grader. In all conditions, participants spend 30 minutes learning the fundamentals of multiplication and are then given the same 15-question multiplication test. The number of questions answered correctly is recorded. The data are below.

-Refer to Research Study 9.3 above to answer the following question.
Using Dr.Phillips's study as an example,explain the difference between a control group and a comparison group.Why did Dr.Phillips's study not have a control group?

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Definitions:

India

A country in South Asia, known for its diverse culture, historical significance, and as being the second-most populous country in the world.

Complements

Goods or services that are used together, where the increase in consumption of one leads to an increase in consumption of the other.

Substitutes

Goods or services that can be used in place of one another; an increase in the price of one leads to an increase in demand for the other.

Related Goods

Products or services that are connected by consumer preferences or demand, such as substitutes and complements.