The Bicycle Drawing Test: Application In Patients With Cognitive Deficits And In Cognitively Healthy Older Adults
Abstract
The Bicycle Drawing Test is used in neuropsychological assessment to evaluate visuoconstructive and executive functions. It is simple to administer and does not take more than a couple of minutes.
However, it requires complex reasoning concerning spatial and mechanical relations. We hypothesize this brings higher sensitivity in the diagnosis of mild cognitive impairment, where e.g.
Clock Drawing Test is not sufficient. The aim of this work is to introduce The Bicycle Drawing Test to clinicians and researchers, to bring preliminary normative data for older adults (over 60 years) and to validate this method in patients with cognitive deficits.
Methods: The task is administered to a group of healthy older adults (n = 100), patients diagnosed with Alzheimer's disease (AD) in the stage of mild cognitive impairment (n = 30), and patients with dementia due to AD (n = 30). Drawings are evaluated according to two different scoring systems (Lezak, 2004, and Greenberg, 2010).
Inter-rater reliability is assessed. The MoCA is used to assess overall cognitive status of subjects.
Results: We present preliminary normative data for older adults. We also present sensitivity and specificity in aforementioned diagnostic groups.
We compare both scoring systems.