There is evidence of cultural differences in explanatory style. In one study, which group of students was found to make the most pessimistic statements?

Ricardo wants to study the academic performance of graduate students in the United States. First, he decides that he will study schools in only 15 states and randomly selects those states. He then randomly selects 30 schools from these 15 states. Over a period of 3 months, Ricardo travels to these 30 schools and studies the academic performance of their students. Identify the sampling technique used by Ricardo in this scenario.

What will be an ideal response?

Thorndike's procedure is called either a(n) __________ or an operant procedure

a. instrumental b. formative c. operational d. respondant e. guidant