The following Add CAPS data are now available:
Animal Naming Test
This test provides data on a participant’s verbal fluency/language by assessing their ability to generate words within a semantic category under time constraints. Participants are asked to name as many animals as possible within a fixed time period. The primary research outcome for this test is the total number of unique, valid animal names produced within 60 seconds. N=2,613, 20 variables
Physical Function
Handgrip strength is a reflection of the overall state of muscle strength and physical function. These test results serve as a practical indicator of age-related functional decline. N=2,613, 28 variables
Sensory Function
The Sensory Function dataset provides data on participants’ auditory functioning, assessed using the hearX hearTest mobile audiometry system. This assessment measures hearing thresholds across multiple frequencies in both ears to evaluate hearing sensitivity and identify potential hearing impairment. The primary research outcomes include pure-tone averages (PTA) for each ear. N=2,613, 49 variables
NIH Toolbox Cognition
The NIH Toolbox Cognition battery includes three cognitive assessments: Dimensional Change Card Sort Test, Pattern Comparison Processing Speed Test, and a Picture Vocabulary Test. These tests provide data on the cognitive domains of executive function, language, and processing speed. N=2,613, 55 variables
Word Recall and Backward Digit Span
The Word Recall tasks were included in the Add CAPS battery to assess episodic memory, a cognitive domain that is known to decline with age and is predictive of dementia risk. Backward Digit Span provides a measure of working memory, reflecting the ability to temporarily hold and manipulate information. Results from these assessments can be combined with results from the same tests in Waves IV and V to conduct longitudinal analyses of cognitive function. Both tasks were adapted from standard neurocognitive batteries. N=2,613, 72 variables
To access the Wave VI restricted-use data, please visit the Add Health Data Portal.