Table 1. Stimulus videos of simulated encounters depicting racist and antiracist behaviors in clinical supervision.

Clip	Featured	Depicted interactions
IA	Trainee and patient in racist encounter	As a Black female physician updates a white male patient, he responds with several overt racialized statements (e.g., repeatedly questioning her credentials, implying she is a "diversity" recruit, or asking for a doctor "I can relate to.")
IIA	Trainee and supervisor in interactions that entrench racism and the status quo	Frozen trainee: a stunned reaction in which she finds it hard to say much and experiences a wilting silence. Dismissive racism, where the supervisor brushes off events or actions as universal ("we all have been treated this way," "it's part of the job experience"), not relevant ("it's him, not you: it's not personal"), or ignored through platitudes ("you are doing a great job, don't pay attention to that, just focus on the patient.")
IIIA		Fleeing trainee, attempting to negotiate out of the clinical encounter ("I'll see any other patient instead"), at times ingratiating herself through fawning compliments ("you are so good at dealing with complex cases.") Benevolent racism, where the supervisor can identify emotional hurt, perhaps even inquire whether racism has been at play. However, her response becomes oppressive in its overzealous attempt to resolve the situation prematurely.
IVA		Forward-leaning trainee, discussing in a direct and candid way the racist interaction she experienced– and the only example in which racism is explicitly named. Internalized racism, in which the supervisor identifies the racist behavior for what it is but recommends avoiding it ("it will just make things worse"), implying a role in exacerbating matters ("you mentioned racism?", "you were too direct"), and warning against possible retaliation ("he might file a complaint," "you don't want to be pegged as the ‘angry Black woman.")
IIB IIIB IVB	Trainee, supervisor, and patient in interactions that uproot racism and foster antiracist practice	The same three trainee-supervisor pairs now join the patient; in these interactions, supervisors demonstrate behaviors they had considered effective and supportive in their past experience: actions they felt proud of toward disrupting racist events and tense interactions; in short, ways in which they considered having been effective in the oversight and protection of their trainees. Among some of the statements by supervisors: “What you said was racist and is unacceptable”; “You are treating me very differently than her, even though she is taking excellent care of your child”; “No; we are not in agreement, and I find your comments dismissive and offensive”; “We will take care of your son, but will ask you to leave if you persist with this behavior”; “I will call security if you persist.”

Note: video clips have a mean duration of 5 minutes each. All videos are available for viewing or download at Figshare ²⁵ .