A nutritionist has designed an intervention to motivate parents of preschool children to provide more fruits and vegetables to their children. To study the effectiveness of this intervention, the nutritionist will conduct an experiment in which half of the selected study participants will receive the intervention and the others will not. Study subjects will be recruited from families with children who receive medical care for their children through the university health center. The nutritionist will compare the amount of fruit consumed per day by the children in families who received the intervention and by those who did not. Which of the following is true?
A)The amount of fruit consumed is the treatment.
B)The amount of fruit consumed is the factor.
C)The amount of fruit consumed is the response.
D)The amount consumed is the carryover effect from before and after the intervention.

Question

Quizplus · Accepted Answer

The amount of fruit consumed is the response variable in this study, as it is the outcome that is being measured to determine the effectiveness of the intervention. The intervention itself is the treatment, and the study is designed to compare the response (fruit consumption) between the treatment and control groups. The factor is the variable being manipulated (the intervention). The carryover effect is not applicable in this study design, as the groups are randomly assigned and the intervention is only given to one group.

A Nutritionist Has Designed an Intervention to Motivate Parents of Preschool