This question highlights a critical dilemma in applied behavior analysis the necessary balance between demonstrating experimental control and upholding paramount ethical responsibilities especially when dealing with severe problem behaviors like selfinjurious behavior SIB A withdrawal or reversal design is a powerful experimental design where an intervention is introduced withdrawn and often reintroduced to demonstrate a functional relationship between the intervention and the behavior In this scenario the clear decrease in SIB with the introduction of the intervention and its subsequent reliable increase upon withdrawal unequivocally demonstrates experimental control This indicates that the intervention was indeed responsible for the observed behavior change establishing a functional relationship However ethically deliberately withdrawing an effective treatment for a severe and dangerous behavior like SIB is highly problematic The primary ethical consideration here is the principle of Do No Harm beneficence and nonmaleficence Allowing a client to return to a state of selfinjury even temporarily for the sole sake of experimental rigor is usually not justifiable due to the potential for harm and the clients right to effective treatment Alternative experimental designs such as multiple baseline designs or carefully staggered withdrawal components within an ABAB design where the B phase baselinewithdrawal is very brief are often preferred when working with dangerous behaviors to minimize the risk to the client while still allowing for a degree of experimental control While the analyst scientifically demonstrated control the method employed was ethically questionable given the nature of the target behavior and its potential consequences for the client