Ian R Kleckner, Jolie B Wormwood, Rebecca M Jones, Eva Culakova, Lisa Feldman Barrett, Catherine Lord, Karen S Quigley, Matthew S Goodwin
Psychophysiologists recording electrodermal activity (EDA) often derive measures of slow, tonic activity-skin conductance level (SCL)-and faster, more punctate changes-skin conductance responses (SCRs). A SCR is conventionally considered to have occurred when the local amplitude of the EDA signal exceeds a researcher-determined threshold (e.g., 0.05 μS), typically fixed across study participants and conditions. However, fixed SCR thresholds can preferentially exclude data from individuals with low SCL because their SCRs are smaller on average, thereby reducing statistical power for group-level analyses...
December 15, 2023: International Journal of Psychophysiology