Table 1.

Description of the SCIP subtests

Subtest	Description	Score	Range scores
VLT-I	Three trials of a 10 word list-learning task with immediate recall after each list presentation	Sum of the number of words correctly recalled over the three trials	0-30
WMT	Eight 3-letter combinations of consonants, with two trigrams each assigned to a 0, 3, 9, or 18 second delay with backward counting distraction.	Sum of the letters correctly recalled	0-24
VFT	Two trials of 30 seconds during which the subject is asked to generate words that begin with a given letter of the alphabet under some specific rules	Sum of acceptable words over the two trials	≥ 0
VLT-D	Delayed recall test of the VLT-I words	Sum of the number of words correctly recalled	0-10
PST	Task that in 30 seconds requires the subject to translate the Morse code equivalents of six letters from the alphabet in boxes under a randomly distributed sequence of the letters	Sum of the number of correct sequential translations	0-30

VLT-I = Verbal Learning Test-Immediate; WMT = Working Memory Test; VFT = Verbal Fluency Test; VLT-D = Verbal Learning Test-Delayed; PST = Processing Speed Test.