Turkish Validity and Reliability of the Parkinson's Disease Neuropsychometric Dementia Assessment Questionnaire in Individuals With Parkinson's Disease

The aim of this study is to examine the validity and reliability of the Turkish version of the Parkinson's Neuropsychometric Dementia Assessment (PANDA) in individuals with Parkinson's disease. This cross-sectional methodological study will evaluate the psychometric properties of the Turkish PANDA, including internal consistency, test-retest reliability, and construct validity, in order to provide a valid and reliable instrument for the assessment of cognitive impairment and dementia-related cognitive changes in Turkish-speaking individuals with Parkinson's disease.

Inclusion Criteria: Clinical diagnosis of Parkinson's disease Hoehn and Yahr stage 1-3 Age between 40 and 85 years Mini-Mental State Examination score ≥ 24 Sufficient cognitive and communication ability to complete the assessments Attendance at the Movement Disorders Outpatient Clinic of the Neurology Department Willingness to participate and provide written informed consent Exclusion Criteria: Presence of a major psychiatric disorder, such as major depressive disorder or a psychotic disorder Diagnosis of advanced dementia Presence of an uncontrolled systemic chronic disease, such as uncontrolled diabetes mellitus or hypertension Presence of a severe cardiovascular or respiratory condition Presence of an additional orthopedic or neurological condition that may affect assessment performance Severe visual or hearing impairment that may interfere with the assessments Inability to cooperate adequately during the assessments