Grant: Master's Award: Canada Graduate Scholarships

"Major Depressive Disorder (MDD) is the leading cause of disability worldwide. It manifests as a variety of psychological, physical and cognitive impairments. Cognitive impairments may include poor memory, slow reaction time and struggling to focus on a task. Cognitive dysfunction plays a large role in daily psychosocial functioning and productivity, both of which impact life satisfaction. MDD can trigger cognitive impairments in anyone, regardless of age. Although we know depression can cause cognitive impairments, what is not understood is how these impairments differ across the lifespan.The purpose of this study is to determine: (i) the association between age and different types of cognitive impairments triggered by MDD and (ii) the association between age and the severity of these cognitive impairments.To conduct this study, I will use the THINC-it test - a new assessment tool specifically designed to identify and classify cognitive impairment in patients with MDD. Four groups will complete the test: young and old adults with MDD, and young and old adults with no mental illness. Participants will be tested in the areas of memory, executive function, attention and processing speed, all of which can be impaired by MDD. Comparisons made between the MDD groups will identify the types of cognitive impairment experienced by each age group. Additional comparisons between the MDD and the non-MDD groups will identify the effects of age on the severity of cognitive impairments. This information will contribute to our understanding of the symptoms triggered by MDD and will improve diagnostic assessments and treatment therapies. Ultimately, the knowledge gained will benefit individuals suffering with depression and diminish the negative effects MDD has on our society."