- Individuals must be able to read and speak English. For purposes of this study, we will limit participation to adults who can self-consent and self-report in English (vs. only being able to respond with the aid of a translator). The materials have been developed in English; this is intended to be cognitive testing of an English language questionnaire. (If a Spanish translation of the items will be developed in the future, a separate cognitive testing effort will be needed to ensure cultural equivalence of the items.)