These extracted values were then entered into regression models using IBM SPSS Statistics 20.0 (SPSS Inc., Chicago, IL). Importantly, by extracting amygdala BOLD parameter estimates from the voxels activated by our paradigm rather than clusters specifically correlated with our independent variables of interest, we preclude the possibility of any regression coefficient inflation that may result from capitalizing on the same data twice23. We have successfully used this conservative strategy in previous reports24-26.
