TABLE 1.

Neuropsychological tests of the UK Biobank battery examined in the present study.

Cognitive test	Outcome
Fluid intelligence	Total number of questions answered correctly (maximum score: 13)
Numeric/Alphanumeric Trail making	Time (in seconds) taken to complete the trail
Digit span	Maximum number of digits recalled (maximum score: 12)
Pairs matching	Number of incorrect matches made
Prospective memory	Whether or not participant responded correctly at first attempt
Symbol digit matching	Number of correct symbol-digit matches
Simple reaction time	Mean response time (in seconds) across the 4 trials containing matching pairs