Question

gus receives a paycheck every week. which reinforcement schedule is this?
fixed interval
fixed ratio
variable interval
variable ratio

Explanation:

In a fixed - interval schedule, reinforcement is provided after a fixed amount of time has passed. Since Gus receives a paycheck every week (a fixed time interval), this is a fixed - interval reinforcement schedule. In a fixed - ratio schedule, reinforcement is based on a fixed number of responses. In a variable - interval schedule, the time between reinforcements varies. In a variable - ratio schedule, the number of responses required for reinforcement varies.

Answer:

A. fixed interval