Inclusion Criteria:  Participants must be older than 18. Participants must have a developmental disability (unconstrained to specific diagnoses). Participants must be able to correctly manipulate all items used in the study. Participants must consent (or assent, when relevant) to procedures prior to and throughout the study.  Exclusion Criteria:  Participants younger than 18. Participants without disabilities. Participants who cannot correctly manipulate items used in the study. Participants who do not consent (or assent, when relevant) to participation.