Yokow gets just enough calories from starchy foods, but his diet is very low in protein. He has an enlarged belly, swollen feet, and a rash on his skin. Yokow probably suffers from

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What will be an ideal response?

Freud's approach to understanding human behavior was based on

a. his own scientific research. b. Wundt's and James's writings on human behavior. c. his observation of patients. d. his negative reaction to Skinner's proposal that all human behavior is caused by environmental events. e. applying the scientific method to large groups of subjects.