A Novel Computerized Cognitive Stress Test to Detect Mild Cognitive Impairment

Area of Science:

• Neuroscience
• Cognitive Psychology
• Gerontology

Background:

• The Loewenstein Acevedo Scales of Semantic Interference and Learning (LASSI-L) shows promise as an early indicator of Alzheimer's Disease (AD) pathology.
• LASSI-L differentiates amnestic Mild Cognitive Impairment (aMCI) with high amyloid load from other causes.
• A web-based brief computerized version, LASSI-BC, was developed to enhance standardization, scoring, and accessibility.

Purpose of the Study:

• Evaluate the psychometric properties and clinical utility of the LASSI-BC.
• Assess the LASSI-BC's ability to differentiate cognitively normal (CN) older adults from those with aMCI.

Main Methods:

• Older adults underwent comprehensive clinical and neuropsychological evaluations.
• Participants were administered the LASSI-BC, a computerized version of the LASSI-L.
• Test-retest reliability and discriminant validity of LASSI-BC subscales were assessed.

Main Results:

• LASSI-BC subscales exhibited high test-retest reliability.
• The instrument demonstrated discriminant validity in differentiating cognitive groups.

Conclusions:

• The LASSI-BC is a valid and practical cognitive tool.
• It effectively aids in the detection of aMCI in older adults.