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Table 2 Mean sample characteristics of the three groups studied

From: Verbal learning in the context of background music: no influence of vocals and instrumentals on verbal learning

  Control Vocal Instrumental
Age 25.6 ± 5.9 25.23 ± 5.43 26.65 ± 6.76
Education (1: low 5 high) 3.4 ± 1 3.5 ± 1 3.5 ± 0.9
IQ 100.2 ± 10.7 101.9 ± 11.9 105.7 ± 14.0
Extraversion/Introversion 2.75 ± 0.44 2.55 ± 0.52 2.58 ± 0.53
N of subjects 40 79 80
% female 67.5 % 65.8 % 67.5 %