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. Author manuscript; available in PMC: 2019 Dec 1.
Published in final edited form as: Neuroimage. 2018 Sep 4;183:818–827. doi: 10.1016/j.neuroimage.2018.08.069

Table 1:

Descriptive statistics of demographic characteristics and study variables

 Variable M SD
Gender (1=female; 0=male) 0.48 -
Age at scan (years) 17.13 .44
RSA baseline 6.78 1.01
RSA task (How sad…) 6.56 1.06
RSA task (How wide…) 6.57 1.07
SCR/minute baseline 4.97 4.07
SCR/minute task (How sad…) 3.83 3.34
SCR/minute task (How wide…) 3.75 3.43

Note: N = 135. RSA = respiratory sinus arrhythmia, measured in ln(msec)2. SCR = skin conductance response; Skin conductance was measured in microsiemens with SCR defined as an increase exceeding .05 microsiemens.