Neuropsychology (Apr 4, 2019). DOI:10.1037/neu0000544 Full text Objective: Olfactory impairment is a very common symptom in Parkinson’s disease (PD). However, individuals often overestimate their ability to smell. Hyposmia and metacognitive errors are also related to aging, depression, male gender and cognitive impairment. The current study investigated the awareness of olfactory functioning in PD and the influence of additional factors.. To read the full article, log in using your NHS OpenAthens details.