Table 7.

T-score equations

Measure	Equation
Total Errors	$10\times \left(\frac{\text{SS Total Errors}-(8.23568-5.53473\ast \frac{age}{100}+3.29995\ast \frac{(\text{edu}+1)}{10}-0.17484\ast \text{gender})}{2.53754}\right)+50$
Perseverative Responses	$10\times \left(\frac{\text{SS Pers. Resp.}-(8.13820-4.14280\ast \frac{age}{100}+2.76561\ast \frac{(\text{edu}+1)}{10}+0.44179\ast \text{gender})}{2.72544}\right)+50$
Perseverative Errors	$10\times \left(\frac{\text{SS Pers. Errors}-(8.1984-3.99399\ast \frac{age}{100}+2.69882\ast \frac{(\text{edu}+1)}{10}+0.54986\ast \text{gender})}{2.7539}\right)+50$
Conceptual level Responses	$10\times \left(\frac{\text{SS Concep Resp}-(8.29546-5.33912\ast \frac{age}{100}+3.22828\ast \frac{(\text{edu}+1)}{10}-0.17058\ast \text{gender})}{2.50474}\right)+50$
Categories Completed	$10\times \left(\frac{\text{SS Categories}-(7.47484-4.69471\ast \frac{age}{100}+3.48816\ast \frac{(\text{edu}+1)}{10}+0.01942\ast \text{gender})}{2.57271}\right)+50$

Note. These formulas should be applied to education level ranges from 0-20 and age 19-60. Using values outside these ranges might result in extrapolation errors. Gender: Male=1; Female=0

Edu=years of education; Age= years of age; Concep Resp = Conceptual Level Responses; Pers. Errors = Perseverative Errors; Per. Resp. = Perseverative Responses