A School Psychologist Is Interested in Determining If Children with Attention

Multiple Choice

A school psychologist is interested in determining if children with attention deficit disorder (ADD) learn better if English literature is read to them rather than having them read the material themselves. A random sample of 10 sixth graders with ADD is selected and divided into two groups of 5 each. One of the groups has a story read to them (Listening Group) and the other reads the story themselves (Reading Group) . A quiz on the story is given after each group has finished reading or hearing the story. The following scores were obtained with 20 being a perfect score. Assume there is a real effect. The size of the effect, using equals _________.

A) 1.72
B) 0.58
C) 0.32
D) 1.65