According to a 2021 study in the journal Substance Abuse: Research and Treatment, peers most benefit from supervision by someone with a similar experience of recovery (e.g., individuals in recovery from substance use disorder should be supervised by other individuals in recovery from substance use disorder). Peers reported that direct supervisors with clinical expertise rather than personal experience often lacked an “understanding of the lived experience, recovery processes, the delicate balance of maintaining boundaries and personal disclosure,” in addition to “not having the deeper level of understanding recovery experiences that they were looking for” from their supervisor.