This scenario presents a clear conflict of interest due to the preexisting personal relationship between the BCBA and the marketing consultant former sorority sisters which constitutes a dual relationship While bartering for services can be ethically permissible under specific conditions eg equal value mutual agreement no exploitation and not prohibited by law or the ethical code itself when other conditions are met the primary ethical concern here is the dual relationship The BACB Ethical Code for Behavior Analysts specifically Section 106 Multiple Relationships requires behavior analysts to avoid multiple relationships that could impair their objectivity competence or effectiveness or risk exploitation or harm to the client Even if the bartered services were of equal value the existing personal relationship makes it inappropriate for the BCBA to provide professional services to the son of a friend or former associate Engaging in such a relationship would compromise professional boundaries and could lead to biased decisionmaking or perceived conflicts of interest The most ethical course of action is to decline to provide services and instead refer the client to another qualified behavior analyst who does not have a preexisting relationship with the family