Further standardization of some NES3 tests.

Area of Science:

• Neuroscience
• Psychology
• Computer Science

Background:

• Cognitive impairment is a concern in various health conditions, necessitating reliable assessment tools.
• The Neurobehavioral Evaluation System 3 (NES3) is a computer-based system for neurobehavioral testing.
• Assessing the reliability and covariate effects of NES3 is crucial for its application in research.

Purpose of the Study:

• To evaluate the test-retest reliability of NES3 cognitive tests in a large sample.
• To identify the influence of covariates such as age, education, and depression on NES3 test performance.
• To explore potential improvements in NES3 test reliability through methodological adjustments.

Main Methods:

• 319 participants in an epilepsy self-management study underwent NES3 testing at baseline, 3 months, and 6 months.
• Test-retest reliability was calculated using correlations between baseline and 3-month measures.
• Regression models investigated the effects of covariates (age, education, reading scores, depression, examiner).

Main Results:

• Excellent to strong test-retest correlations were found for several NES3 tests, including the Adult Reading Test (ART) (r=0.95) and Digit-Symbol (r=0.82).
• Modest correlations were observed for Digit Span and Visual Span tests (r's between 0.56-0.67).
• Age and reading scores were significant covariates, while education, gender, race, and depression were generally not.

Conclusions:

• NES3 tests exhibit promising reliability for assessing cognitive function, particularly with computer-assisted formats like HVLT and ART.
• Methodological adjustments and feedback can improve the reliability of certain NES3 tests.
• NES3 provides efficient and reliable data for epidemiological studies on cognitive effects of exposures.