The authors of the text comment that the abstract should probably be written _____ although most authors usually write it _____

The cerebellum __________

a. controls blood pressure b. is involved in emotional behavior c. coordinates actions so that movements are efficient d. relays messages from the sensory receptors

Sam wants to borrow his father's car to use on a date. Because his dad becomes absorbed in reading the newspaper, Sam must repeat his request several times before he gets his dad's attention

From week to week he does not know how many requests he will have to make. What type of schedule of reinforcement is involved here? a) fixed-ratio b) fixed-interval c) variable-ratio d) variable-interval