Boys learn to nod their head during conversations with other boys. This lets the talker know that he is being listened to

What is/are characteristic(s) of emotions such as anxiety and fear?

a. Heightened physical arousal, cognitive/subjective distress, and behavioral avoidance b. only behavioral avoidance c. only cognitive/subjective distress and behavioral avoidance d. only heightened physical arousal

What can we conclude from the observation that retrieving an item from short-term memory takes longer as items are added to STM?

a) STM processing is not efficient. b) The capacity of STM is unlimited. c) We apparently scan every item in STM before reporting. d) The items added to STM must have been more difficult than the previous items.