Table 2.

Interview measures

Construct	Measure
Attitudes (expectancies)	What are good things that could happen if you were to sign up for a registry for brain health research studies?
	What are bad things that could happen if you were to sign up to be on a registry for brain health research studies?
Normative Pressure (normative referents)	Who would approve of you signing up to be on a registry for brain health research studies?
	Of these people, about how many of them do you think would sign up to be on a registry for brain health research studies?
Perceived behavioral control/self-efficacy (barriers and facilitators)	What might make it easy for you to sign up to be on a registry for brain health research studies?
	What might make it difficult for you to sign up to be on a registry for brain health research studies?