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.
a. dependent
b. independent
c. extraneous
d. confounding
Question 2
The dimension along which a study context can be related to other potential contexts is called the ____.
a. sampling frame
b. generalizability
c. similarity index
d. gradient of similarity
An indoor mould fungus.
A propaganda poster enshrining Stalin proclaims that he has led his people “Forward to ...
Over Studying
Older people who exercise cognitive skills, like these chess players, retain those skills well into ...
Trees provide ecosystem services to people
What is the contribution of studying wing spot in the field?