Exploring the relationship between mean performance and within-person variability on smartphone-based cognitive testing in adults across the lifespan.

ABSTRACT: Cognitive performance is classically measured through measures of central tendency. However, intraindividual cognitive variability (IIV) also holds important information about cognitive functioning. Smartphone-based ecological momentary cognitive testing (EMCT) can capture IIV across days. This study examined predictors of IIV, including demographics, affect, and mean performance, in EMCTs completed on the NeuroUX platform among two US-based samples: adults and older adults with high rates of mild cognitive impairment. The adult sample (n = 375) completed eight EMCTs assessing memory, processing speed, executive functioning, and working memory; each test was self-administered five times over ten days. The older adult sample (n = 94) completed three EMCTs assessing memory, pro

SUBMITTER: Campbell LM 

PROVIDER: S-EPMC12176645 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature