The difficulty of knowing other minds is why the early behaviorists replaced which of the following with more objective measures?

According to Barry, Rich, and Carlson (1993), functional adaptations to exercise in frail elderly patients include

A. increase in anxiety and appetite B. decrease in socialization C. increase in maintenance of lean body mass, weight control, and metabolic rate D. decrease in plasma volume and insulin receptor sensitivity

Watching behavior in real-world settings is known as ___________

A) a case study B) a correlation design C) naturalistic observation D) a self-report