Use these research scenarios
to test your understanding of the different methods. After youíve written
down your answers, you can check the answers to see if youíre right.
1. Dr. A is studying
whether babies can read emotional signals from their parents. His
hypothesis is that parentsí facial expression will affect babiesí
behavior. He has a group of 40 babies (with their moms). He has the moms
draw numbers from a bowl, and this divides the group into two smaller
groups of 20 babies/moms each.
Each baby is placed beside a new toy. In one group,
the mom looks at the baby and smiles. In the second group, the mom looks
at the baby and makes no expression.
Dr. A measures how
close the baby crawls to the toy. He found that on average, the babies
with the smiling mothers crawled closer to the toy than the babies with
the expressionless mothers.
a. What is Dr. Aís
b. What is the
independent variable? What is the dependent variable?
c. What is the
treatment condition? What is the control condition?
d. What is Dr. A able
to conclude? (What do the findings mean?)