Table 2.

Participant characteristics and task performance

CharacteristicMean ± SD (n = 759)
Age (yr)16.20 ± 3.27
Sex (female/male)419/340
Race (Caucasian/other)408/351
Motion (mm)0.073 ± 0.03
Fluid intelligencea12.62 ± 3.97
Fear accuracy0.89 ± 0.11
Anger accuracy0.92 ± 0.09
Sad accuracy0.88 ± 0.11
Neutral accuracy0.91 ± 0.09
Happy accuracy0.99 ± 0.03
Fear RT (s)2.65 ± 0.46
Anger RT (s)2.48 ± 0.44
Sad RT (s)2.68 ± 0.46
Happy RT (s)2.09 ± 0.40
Neutral RT (s)2.34 ± 0.44
  • aFluid intelligence is measured by Penn Matrix Reasoning Test scores (i.e., total correct responses for all test trials). RT, Response time (median). For age distribution, see also Figure 1a.