Creativity, flexible thinking and dopamine

Intervention: NA Primary outcome: Primary outcome 1. Applicability and Feasibility: Given the potential symptom-related confounders in PD, such as severe motor issues (tremor, dystonia) and impulsive rejection of conducting tasks, it is critical to determine whether the tasks and the entire battery are practical and feasible. 2. Face Validity Assessment: This pilot will involve subjective evaluation by a research team (including psychologists) through observing participants during the tasks to assess if the tests cover the concept they purport to measure, thus gauging the face validity. 3. External Validity Assessment: We intend to visit people in their homes and interview both participants and caregivers, considering participants* daily life circumstances, issues, and behaviour to ensure the external validity (considering widening the results to their homes) of our findings. Secondary outcome: The secondary objective is to get first insights into potential relationships of the explored outcomes of the test battery. Within this small cohort, investigations into the relationships between PD, dopamine, creativity, cognitive flexibility, and PD/dopaminergic-induced mood and behavioural changes are considered explorative research.