Ava is conducting an assessment to determine the functional variable maintaining her client’s problem behavior. She decides to rapidly alternate the 4 test conditions and randomizes the order of presentation of each condition. What is the precise name of the design called? 

Alternating Treatments Design (ATD) is most often used to answer this type of research question. 

Sara conducts a study evaluating the effectiveness of PECS on increasing vocalizations in young children who are non-vocal. At the end of the study, she asks parents to rate their perceptions on the efficacy of the intervention. Sara is evaluating; 

When is a participant most likely to terminate participation in a reversal study? 

Which of the following is a limitation of the ATD? 

The diminishing of a conditioned response; occurs in classical conditioning when an unconditioned stimulus (US) does not follow a conditioned stimulus (CS); occurs in operant conditioning when a response is no longer reinforced.

In this design, each phase provides a baseline for following phase and is best suited for evaluating the effects of instructional techniques on stepwise changes in rate, accuracy, duration, or latency of a single target behavior.

Intentionally causing another person to fear immediate bodily harm or death or intentionally inflicting or attempting to inflict bodily harm on the person is called:​

BONUS QUESTION: WORTH 1 POINT.An x-ray exposure of 200 mR is recorded at a distance of 40 inches. If the same technical factors are used, what will the exposure be if the distance is increased to 72 inches?

Which context does not apply to ecological validity?