Miroslav is training to be a telephone salesperson. Initially, his boss pays Miroslav for every phone call that he makes. Later, Miroslav only gets paid if the customer requests an information package, and eventually he will only be paid if he actually closes the sale. Based on what is known about operant conditioning, you should conclude that Miroslav's telephone sales skills are being developed

. Which hormone is produced by fat cells in the body and serves to relay information about nutrition to the hypothalamus?

A) Cholecystokinin B) Leptin C) Glucose D) Insulin

Your 17-year-old nephew is very careful not to get involved with any types of drugs or substances and has no friends who engage in substance use of any kind

His sister, who is 6 years older than he is, had a serious substance abuse problem during her high school years. What type of self is your nephew concerned about? feared self ideal self real self fictional self