cognitive assessment

memento dx psychometric testing

Introduction
The Memento Cognitive Battery Assessment is a digitized series of cognitive tests that are administered to patients who present early signs of Alzheimer’s Disease. This assessment provides clinicians an objective measure of cognitive function through the administration of individual tests that assess different cognitive domain measures, such as memory, attention, and executive functioning. Our wide selection of different cognitive assessments has been carefully handpicked through collaboration with neurologists and Alzheimer’s Disease researchers at Washington University School of Medicine. 

Concept Development
While our current assessment model requires test administration by a psychometrician, a professional test administrator who provides psychological testing services to patients in hospitals and research centers, our goal is to gradually transition this digitized system to a remote-accessed service that can be self-administered by the patient. However, digitized administration of this test, even with a psychometrician, presents many benefits that the current traditional testing model does not provide. While conducting design research to clarify issues to address, I shadowed a psychometrician administering these assessments as pencil and paper tests to patients in the clinic. Testing sessions often took about 45 minutes to an hour to complete, and during this process, patients were frequently anxious, frustrated, and emotional. Even upon completion of the entire battery assessment, appointment delays were frequent because psychometrician were required to manually input entries into the computer. The current process was labor-intensive, inefficient, and was prone to many scoring errors.

Here are some of the benefits our digitized product provides:

1. standardized scoring measures
2. automatic score inputs and calculations
3. game-design elements to generate more patient viewer friendly assessments
4. streamlined testing administration and flexible interactions between test administrator and patient
5. score presentation with normative data and individual performance for all clinic patients 
normative graphs and figures allow physicians to more easily communicate results to patients and families in the context of the patient’s demographic and current cognitive functional abilities
allows physicians replay physician’s testing performance to family members who may be confused as to how scores translate to diagnostic outcomes
• generates a database of well-organized retrospective cognitive data to conduct large scale clinical studies

Tools
• Prototypes - Adobe Experience Design
• Diagrams - Adobe Illustrator & Photoshop
Review of existing cognitive batteries illuminates the most sensitive assessments for detecting early cognitive decline. We searched the literature for the most widely used, sensitive cognitive batteries to detect early dementia. We parsed out assessments from nine cognitive batteries (blue circles) into cognitive domains and items that tested these domains. We then ranked each item based on four categories: interpretability; time to administer; ubiquity; and sensitivity and specificity. We chose items based on their overall rank in these categories, as well as the domains they tested. Tests highlighted in black were handpicked for our battery through collaboration with neurologists and researchers at Washington University School of Medicine.
Relayout of the "Trails-B" cognitive test for digital application
Early "Trails-B" assessment mock ups
Early "Trails-B" title screen mock ups
Wireframes of the psychometrician testing screen
Prototype mockups of psychometrician testing screen
An interactive prototype of the "Trails-B" cognitive assessment.
Click "Go!" for a live interactive demo
Click "BEGIN" or navigation bar above for a live interactive demo of the Memento Dx Cognitive Battery (psychometrician screen)