An elementary teacher had a student, Andy, who showed signs of hyperactivity in the classroom. The teacher wanted to experiment to find ways to reduce the hyperactivity and bring about behavior more conducive to learning. She began to record the number of incidences of hyperactive behavior. After a period of time, she started to praise Andy and gave him tokens when he stayed in his seat and showed other less hyperactive behavior. The praise and tokens continued during which time the teacher observed and recorded Andy's behavior. The teacher then stopped the praise and the tokens and took measures of Andy's behavior. What data would the teacher look for to determine the effectiveness of her treatment?
a. a decrease in hyperactivity during the treatment phase.
b. an increase in hyperactivity during the treatment phase.
c. an increase in hyperactivity during the return to baseline period.
d. an increase in hyperactivity when the B phase is reinstated.
e. a and c
Question 2
In its simplest form, an experiment has three characteristics. Choose the characteristic that corresponds with each example. Two classes were randomly selected and randomly assigned to be the experimental and control groups.
a. The effect of the independent variable is measured through observation of the dependent variable.
b. Extraneous variables are held constant.
c. An independent variable is manipulated.
Griffith's experiments that showed the transformation of bacteria by a “transfor
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