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. Author manuscript; available in PMC: 2018 Apr 6.
Published in final edited form as: J Cogn Neurosci. 2016 Nov 29;29(4):728–738. doi: 10.1162/jocn_a_01073

Table 1.

Participant Demographics

Metric Mean SD Min–Max
Age, Years 26.6   5.8 18–36
Years of education 10.2   2.1   5–14
Raven’s advanced progressive matrices 7   2.8   1–11
Digit Span Forward 11.8   2.1   8–14
Barratt Impulsivity Scale 67.2 10.7 47–84

Years of education refer to the number of years since leaving U.K. primary school (~11 years).