Inclusion Criteria:  For persons with PD,confirmed diagnosis of PD) For significant others - relationship with person with PD  Exclusion Criteria:All participants will be screened to ensure they do not have:  any known cognitive disorders other than those associated with PD impairments in vision that would affect their ability to safely participate in the study recent history of neuromuscular injury/ damage that could affect their ability to complete the CEFI the participant will be excluded if he or she is unable to follow commands well enough to complete the CEFI