"ms. harper wants to increase john’s behavior of sharing during circle time. each time ms. harper observes john sharing she provides him with a token and his behavior increased. what type of reinforcement is ms. harper using?
a. positive reinforcement
b. negative reinforcement
c. differential reinforcement of other behavior
d. differential reinforcement of incompatible behavior."

Why would nations in latin america be part of a mostly arab cartel group known as opec? a) latin america refused to do business with countries that were not part of opec. eliminate b) natural resources such as oil are a major economic development for some latin american countries. c) latin america has a long history of distrust of the united states and fears a take-over of oil fields. d) latin american nations such as venezuela needed in getting natural resources to other parts of the world. 15