The Changing Criterion Design is an experimental design primarily used to evaluate the effects of a treatment that is applied to a single target behavior in a stepwise fashion This design demonstrates experimental control by showing that the behavior reliably changes to meet each new criterion level Option A Altering Magnitude This statement is TRUE Altering the magnitude of criterion changes eg making larger or smaller steps between criteria or even increasing then decreasing the criterion can indeed strengthen the demonstration of experimental control This variation makes it less likely that extraneous variables are responsible for the behavior changes as it shows precise control over the target behavior Option B Increasing Number of Changes This statement is TRUE The more times the criterion is changed and the behavior reliably matches that change the more compelling the demonstration of experimental control becomes As the text states if i make a change a hundred times and the behavior follows a hundred times thats more telling than if i make one change in the behavior follows one change Multiple successful criterion changes provide robust evidence of the independent variables influence Option C Baseline Necessity This statement is FALSE While a prolonged baseline phase might not always be depicted if the behavior is at an initial stable lowhigh rate a baseline is crucial in a Changing Criterion Design It establishes the preintervention level of the target behavior providing a starting point and a basis for setting the initial criterion Without a baseline it would be difficult to determine appropriate criterion levels or to clearly demonstrate that the intervention is responsible for changes from the individuals typical performance The text explicitly states if we want to know where to start our criterion well a baseline is going to be helpful Option D Steady State This statement is TRUE A critical aspect of the Changing Criterion Design is that each criterion phase must be long enough for the behavior to stabilize or reach a steady state at the new criterion level This stability is necessary before the criterion is changed again as it allows for a clear comparison between phases and strengthens the evidence of experimental control If behavior is unstable it is difficult to attribute changes to the criterion shift rather than other variables