In the double-blind procedure, some subjects receive an active drug while others receive a neutral, inactive substance called a ______

Ivan Pavlov rang a bell every time he fed meat powder to dogs. After repeated trials, the dogs began to salivate when they heard the bell, even if there was no food in sight. According to Pavlov, the dogs' salivation in the absence of food, following the ringing of the bell, is called the

A. conditioned stimulus. B. conditioned response. C. unconditioned stimulus. D. unconditioned response.

You overheard your little sister and her best friend, who are both 8 years old, discussing what they thought about puberty and when they thought those changes would begin for them

Your sister is thin and her friend is considerably heavier. What is likely to occur in terms of the beginning of puberty for them? a. They will both begin puberty at the same time. b. Your sister, being thinner, is likely to begin puberty earlier. c. Your sister's friend, having more body fat, is likely to begin puberty earlier. d. They are not likely to be talking about puberty at this age.