Dr. Jones is conducting an experiment on how energy drinks affect performance,

she deliberately changes the drinks to produce a different effect on the participants.

What is Dr. Jones doing?

A.
Random assignment

B.
Double-blind procedure

C.
Experimental manipulation

D.
None of the above

Match the limiting factor with the correct definition. 1. learning about the benefits of exercise location/access 2. problem that can be solved by choosing free activities understanding 3. living close to a park motivation 4. how you were raised money 5. how you feel about yourself and your ability to exercise family behaviors