Avoidant personality disorder seems MOST closely related to:

Which of the following is NOT true of the "Jim twins"?

a. The twins were separated at birth. b. The IQ scores of the twins were nearly identical. c. Each smoked the same cigarette brand and drank the same brand of beer. d. Their wives were similar in hair color and vocational interests. e. Each twin named their dog "Toy."

Compared to artificial concepts learned in science and math, natural concepts tend to be

a. easier to learn. b. very clear and well defined. c. fuzzy with unclear boundaries. d. good fits with a rigid classification system. e. biologically innate.