. 2020 Aug 20;10:14016. doi: 10.1038/s41598-020-70981-4

Table 3.

T score calculation formulas based on scaled scores for tests assessing motor and speed of information processing domains.

Test	Formula
Motor domain
Grooved Pegboard–dominant hand	50 + 10 × [(scaled score) − (9.9524 + 2.1445 × ((edu + 1)/10) − 8.0012 × (age/100) − 0.2450 × male)]/2.6106
Grooved Pegboard–non-dominant hand	50 + 10 × [(scaled score) − (11.1141 + 1.7112 × ((edu + 1)/10) − 9.4319 × (age/100) − 0.4858 × male)]/2.6828
SIP domain
WAIS-III digit symbol total	50 + 10 × [(scaled score) − (8.3622 + 3.9066 × ((edu + 1)/10) − 9.8019 × (age/100) − 0.5678 × male)]/2.1019
WAIS-III symbol search	50 + 10 × [(scaled score) − (3.9602 + 3.5142 × ((edu + 1)/10) + 0.1238 × (age/100)⁻² − 0.0233 × male)]/2.4067
Stroop color total	50 + 10 × [(scaled score) − (9.2469 + 2.1281 × ((edu + 1)/10)³ − 2.4993 × log((edu + 1)/10) × ((edu + 1)/10)³ − 5.9936 × (age/100) − 0.4210 × male)]/2.6168
Stroop words total	50 + 10 × [(scaled score) − (7.9642 + 2.4560 × ((edu + 1)/10)³ − 2.8511 × log((edu + 1)/10) × ((edu + 1)/10)³ − 3.9559 × (age/100) − 0.1437 × male)]/2.5853
Trail making A time	50 + 10 × [(scaled score) − (9.1490 + 2.6381 × ((edu + 1)/10) − 7.5250 × (age/100) − 0.3085 × male)]/2.5746
Color trails 1 time	50 + 10 × [(scaled score) − (8.6428 + 2.7874 × ((edu + 1)/10) − 6.8461 × (age/100) − 0.1505 × male)]/2.5560

Edu education, male 1 for male, 0 for female, SIP speed of information processing, WAIS-III Wechsler Adult Intelligence Scale-III.