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The main focus of this article is to operationalize the diagnosis of PD\u2010D and to propose pratical guidelines based on a two level process depending upon the clinical scenario and the expertise of the evaluator involved in the assessment. Level I is aimed primarily at the clinician with no particular expertise in neuropsychological methods, but who requires a simple, pragmatic set of tests that are not excessively time\u2010consuming. Level I can be used alone or in concert with Level II, which is more suitable when there is the need to specify the pattern and the severity on the dementia of PD\u2010D for clinical monitoring, research studies or pharmacological trials. Level II tests can also be proposed when the diagnosis of PD\u2010D remains uncertain or equivocal at the end of a Level I evaluation. Given the lack of evidence\u2010based standards for some tests when applied in this clinical context, we have tried to make practical and unambiguous recommendations, based upon the available literature and the collective experience of the Task Force. We accept, however, that further validation of certain tests and modifications in the recommended cut off values will be required through future studies. \u00a9 2007 Movement Disorder Society<\/jats:p>","DOI":"10.1002\/mds.21844","type":"journal-article","created":{"date-parts":[[2007,12,20]],"date-time":"2007-12-20T19:40:27Z","timestamp":1198179627000},"page":"2314-2324","source":"Crossref","is-referenced-by-count":901,"title":["Diagnostic procedures for Parkinson's disease dementia: Recommendations from the movement disorder society task force"],"prefix":"10.1002","volume":"22","author":[{"given":"Bruno","family":"Dubois","sequence":"first","affiliation":[]},{"given":"David","family":"Burn","sequence":"additional","affiliation":[]},{"given":"Christopher","family":"Goetz","sequence":"additional","affiliation":[]},{"given":"Dag","family":"Aarsland","sequence":"additional","affiliation":[]},{"given":"Richard G.","family":"Brown","sequence":"additional","affiliation":[]},{"given":"Gerald A.","family":"Broe","sequence":"additional","affiliation":[]},{"given":"Dennis","family":"Dickson","sequence":"additional","affiliation":[]},{"given":"Charles","family":"Duyckaerts","sequence":"additional","affiliation":[]},{"given":"Jefferey","family":"Cummings","sequence":"additional","affiliation":[]},{"given":"Serge","family":"Gauthier","sequence":"additional","affiliation":[]},{"given":"Amos","family":"Korczyn","sequence":"additional","affiliation":[]},{"given":"Andrew","family":"Lees","sequence":"additional","affiliation":[]},{"given":"Richard","family":"Levy","sequence":"additional","affiliation":[]},{"given":"Irene","family":"Litvan","sequence":"additional","affiliation":[]},{"given":"Yoshikuni","family":"Mizuno","sequence":"additional","affiliation":[]},{"given":"Ian G.","family":"McKeith","sequence":"additional","affiliation":[]},{"given":"C. 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