Which of the following is NOT one of the four types of conflicts?

The three most common substance abuse disorders among older adults are overuse of alcohol, tobacco abuse and

a. overuse of caffeine. b. overuse of painkillers. c. misuse of prescription medications. d. misuse of inhalants.

Which problem-solving strategy did the Wright brothers use to solve the challenge of powered human flight?

a. finding a relevant analogy b. working backwards from small-order to large-order concerns c. formal logic d. breaking the problem into its component parts e. functional fixedness