Dr.Ramos is interested in studying how indoor lighting can influence people's moods during the winter.A sample of 100 households is selected.Fifty of the homes are randomly assigned to the bright-light condition where Dr.Ramos replaces all the lights with 100-watt bulbs.In the other 50 houses,all the lights are changed to 60-watt bulbs.After two months,Dr.Ramos measures the level of depression for the people living in the houses.Assuming that the study uses people from different age groups,participant age would be a(n)____ variable in the experiment.

Question

Quizplus · Accepted Answer

Participant age is not being manipulated in this experiment and is not an independent or dependent variable. It is also not a potential source of error or confounding variable. Therefore, it is classified as an extraneous variable which may influence the results, but is not of primary interest in the study.

DrRamos Is Interested in Studying How Indoor Lighting Can Influence