Which of the following research hypotheses would be most appropriately addressed

Question

Which of the following research hypotheses would be most appropriately addressed by experimental research? Select all of the correct answers.

a) Creative fifth-grade students have higher achievement motivation than do noncreative fifth-grade students.

b) Young children who are read a story by a stranger will not retain if as long as those who are read the same story by their own mothers.

c) First-grade students who learn to spell phonetically will score higher on a spelling test than will those students who learn to spell using the whole-word method.

d) Adolescents from single-parent homes more frequently have police records than do adolescents from homes with both parents present.

Explanation / Answer

Experimental research question

Is there a difference in Y (dependent variable) between group A who received X (independent variable) and group B who did not receive X?

Thus,

b) Young children who are read a story by a stranger will not retain if as long as those who are read the same story by their own mothers.

c) First-grade students who learn to spell phonetically will score higher on a spelling test than will those students who learn to spell using the whole-word method.

d) Adolescents from single-parent homes more frequently have police records than do adolescents from homes with both parents present.

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