What is the appropriate statistical test for a dependent-samples design with an interval or ratio dependent variable and more than two levels of the IV or quasi-IV?

The centerpiece of the __________ perspective in psychology is human thought and all the processes of knowing. From this perspective, people act because they think

FIll in the blank with correct word.

A rat is placed in a box where lever presses provide food only every 20 seconds

Eventually, the rat begins rapidly pushing the lever around every 18 seconds, having learned on a (a) fixed interval schedule (b) variable interval schedule (c) fixed ratio schedule (d) variable ratio schedule