Ronald is running an experiment examining spatial memory. Ronald's experimental group consists of 30 male undergraduate students ranging in age from 17 to 20 and majoring in a variety of disciplines. Which of the following best describes the control group that Ronald should have for this experiment and why?

Ronald is running an experiment examining spatial memory. Ronald's experimental group consists of 30 male undergraduate students ranging in age from 17 to 20 and majoring in a variety of disciplines. Which of the following best describes the control group that Ronald should have for this experiment and why?




A)
30 undergraduate students, 15 of each gender, ranging in age from 17 to 20 and majoring in a variety of disciplines in order to study gender differences.
B)
30 male undergraduate students ranging in age from 17 to 20 and majoring in a variety of disciplines for consistency between groups with exception to the independent variable.
C)
30 male undergraduate students of any age and majoring in psychology because they would have a better understanding of spatial memory than undergraduates majoring in other disciplines.
D)
30 undergraduate students, 15 of each gender, of any age and majoring in a variety of disciplines for the purpose of broadening the generalizability of potential results.



Anaswer: B