The most common approach to persuasion is

A restaurant is interested in examining the effect of increasing the price of hamburgers on its sales. During the first six months of the year, it measures the number of hamburgers sold each day. It then increases the price and records the number of hamburgers sold each day for the last six months of the year. This quasi-experimental design would be an example of a(n)

A. control series design. B. nonequivalent control group design. C. interrupted time series design. D. nonequivalent control group pretest-posttest design.

Seven-year-old Angelica gets extremely disheartened when she fails at a new task. She blames herself for her failure and begins to feel that she is worthless and that her skills are inadequate. She then avoids doing that task altogether. Which of the following should Angelica's parents avoid doing if they want Angelica to believe that she can succeed if she tries harder?

A. focus on giving her specific, focused feedback B. refrain from bestowing her with generic praises C. encourage her to show more perseverance D. praise her more for her inherent abilities