In an experimental study examining whether children who are read to more often score higher on vocabulary tests in first grade,the independent variable would be the __________.
A) frequency of read-alouds
B) type of books parents read
C) child's vocabulary score
D) difficulty of vocabulary words

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated by the researcher to see if it has an effect on the dependent variable. In this case, the frequency of read-alouds is being controlled and manipulated to see if it affects the child's vocabulary scores. The other options (type of books, child's vocabulary score, difficulty of vocabulary words) are either irrelevant to the study or are dependent variables that are being measured rather than manipulated.

In an Experimental Study Examining Whether Children Who Are Read