1. A girl scout sells cookies door to door. Every once in a while a nice neighbor buys a box. What type of reinforcement schedule is at work here? a.variable ratio b.fixed ratio c.fixed interval d.variable interval 2. Which is not a component of working memory? a.central executive b.articulatory loop c.primary iconic d.all of the choices are correct 3. If the reward for waiting for a city bus is the bus arriving (which, for the purposes of this exam, we will assume that the bus always arrives on time), what sort of schedule of reinforcement does this represent? a.variable interval b.fixed ratio c.variable ratio d.fixed interval 4. What is a conditioned response? a.a reflexive response elicited by the conditioned stimulus b.generalization of a response to other similar conditions c.a stimulus that elicits a reflexive response without prior learning d.an originally neutral stimulus that acquires significance through "conditioning"