Carol Dweck is a noted psychologist from Stanford who believes that we should praise students’ effort and not their intelligence. In her seminal study (2006), she gave students a test and then randomly divided the students into two groups. She praised the effort of one group and praised the intelligence of the other group. For their next exercise, the groups were given a choice of a challenging task or an easy task. Of those who were praised for their effort, 90% chose the challenging task, whereas fewer than half of the students who were praised for their intelligence chose the challenging task, fearful of losing their smart status.
a. Identify the response variable(s), explanatory variable, experimental units, and treatments.
b. What type of experimental design does this employ? Explain.