Researchers Assigned Children Who Showed Intrinsic Interest in Drawing to Three

Researchers assigned children who showed intrinsic interest in drawing to three distinct groups and used a common assessment to determine the percentage of time that children later chose to play with the art materials that they had played with during the experimental session.These researchers found:

A) children in the expected-reward condition played with the art materials more than they had at the outset
B) children in the unexpected-reward condition played with the art materials less than they had at the outset
C) children in the no-reward condition played with the art materials less than they had at the outset
D) children in the expected-reward condition played with the art materials less than they had at the outset