Hiroshi, an exchange student from Japan, notices that his…

  Hiroshi, an exchange student from Japan, notices that his American classmates openly show excitement and enthusiasm during class discussions. Although he is usually more reserved, he begins smiling and expressing enthusiasm to fit in. Hiroshi’s behavior is being influenced by  

  A video game awards players with random bonus items after…

  A video game awards players with random bonus items after an unpredictable number of enemy defeats. Sometimes a player gets a reward after five enemies, other times after twenty or more, but the rewards keep them playing. This pattern of reinforcement is based on a __________ schedule.