Author Question: What is the basic goal of a changing criterion design? A. Demonstration of a functional ... (Read 51 times)

waynest · **on:** Jun 20, 2018

What is the basic goal of a changing criterion design?

A. Demonstration of a functional relationship between the target behavior and intervention by replicating the intervention effects with two or more behaviors, in two or more settings, or with two or more individuals
B. Comparison of the effects of two or more treatments on the same behavior
C. Evaluate the effects of a treatment on the gradual increase or decrease of a single target behavior
D. None of the above

Question 2

How do reactivity and observer drift differ? How are they similar?

What will be an ideal response?

thall411 · **Reply #1 on:** Jun 20, 2018

Answer to Question 1

C

Answer to Question 2

Reactivity refers to the individual being observed (the subject as a rule) altering his or her performance of the target behavior in response to the observations.
Observer drift refers to the data recorder changing his or her interpretation of the target behavior and drifting from the original recording procedure.
Both instances diminish the reliability and therefore validity as well. In reactivity, the data may be recorded accurately but perhaps not with confidence that the present levels of performance are reliable. In observer drift, the individual's emission of the target behavior may be unchanged, but the recorder has begun recording its occurrence (or duration, latency, etc.) differently.