Adult ADHD: Risk factor for dementia or phenotypic mimic

Observational Study

Get in touch about this study

What is the study about?

Attention-deficit hyperactivity disorder (ADHD) and mild cognitive impairment (MCI) often present with similar cognitive complaints, such as difficulties with controlling attention and impulses. As a result, many older adults with ADHD can be misdiagnosed as having MCI rather than ADHD. This study will compare participants with MCI and ADHD to help improve our ability to distinguish between the two conditions in older adults.



Eligibility- Who can participate?

Participants must:

  • Be 50-85 years of age
  • Have a diagnosis of MCI or ADHD, or be a healthy volunteer


Time requirement

  • 4-hour visits once a year over 3 years
  • Visits will include cognitive testing and questionnaires

TDRA Study Investigator

Dr. Sandra Black


TDRA Site:

Sunnybrook Health Sciences Centre

Address: 2075 Bayview Ave, Toronto, ON M4N 3M5

Age Group:

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Target Population:

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The listing of a study on the Toronto Dementia Network (TDN) is for informational purposes only. The safety, efficacy or scientific validity of the studies listed here have not been evaluated by The Alzheimer Society of Toronto (AST) or the Toronto Dementia Research Alliance (TDRA). The TDRA is an academic coalition among the University of Toronto and four memory clinics across Toronto at Baycrest, the Centre for Addiction and Mental Health, Sunnybrook Health Sciences Centre, and the University Health Network. The information collected will be kept and guarded by TDRA. Choosing to participate in a study is an important personal decision. Before you participate in a study, you should make sure you understand the risks and potential benefits and discuss all options with your health care provider(s).