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. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: Clin Neuropsychol. 2020 Feb 20;35(2):396–418. doi: 10.1080/13854046.2020.1713400

Table 7.

Comparisons of T-scores when raw data is normed utilizing different sets of norms.

Test Measure N Current Norms M (SD) Range Non-Hispanic White Norms for English-speakers Non-Hispanic Black Norms for English-speakers
M (SD)
Range		 Cohen’s d M (SD)
Range		 Cohen’s d
Grooved Pegboard
(Dominant)		 254 49.98 (10.00)
25–82		 51.28 (10.21)
19–83		 −0.13* 58.52 (10.21)
27–91		 −0.85*
Grooved Pegboard
(Non-dominant)		 254 49.98 (10.00)
21–77		 47.31 (9.76)
21–73		 0.27* 56.64 (10.76)
30–88		 −0.64*
Finger Tapping
(Dominant)		 183 50.02 (10.02)
22–73		 52.45 (8.87)
25–76		 −0.26* 50.59 (7.81)
27–73		 −0.06
Finger Tapping
(Non-dominant)		 183 49.99 (10.00)
20–73		 53.95 (8.96)
29–74		 −0.42* 51.45 (8.09)
28–73		 −0.16*

Note.

*

p<0.0001 based on dependent sample t-tests between T-scores based on current norms and non-Hispanic norms for English speakers