In Maslow's hierarchy of needs, which is the highest need?

When research participants engage in different activities depending on which group they have been assigned to, we know that the independent variable is a

a. task variable. b. measured variable. c. quantitative variable. d. subject variable.

In a laboratory experiment, a disadvantage is that

a. researchers can control conditions. b. the findings will be specific to the exact conditions present in the laboratory. c. an intervention study will be necessary to confirm findings. d. there is no control group.