Call: mediate(y = "Y", x = "X", m = c("M"), data = Data_med, n.iter = 10000, std = TRUE, plot = F) The DV (Y) was Y . The IV (X) was X . The mediating variable(s) = M . Total Direct effect(c) of X on Y = 0.34 S.E. = 0.1 t direct = 3.56 with probability = 0.00057 Direct effect (c') of X on Y removing M = 0.03 S.E. = 0.09 t direct = 0.36 with probability = 0.72 Indirect effect (ab) of X on Y through M = 0.3 Mean bootstrapped indirect effect = 0.3 with standard error = 0.06 Lower CI = 0.19 Upper CI = 0.43 R2 of model = 0.37 To see the longer output, specify short = FALSE in the print statement Full output Total effect estimates (c) Y se t Prob X 0.34 0.1 3.56 0.000567 Direct effect estimates (c') Y se t Prob X 0.03 0.09 0.36 7.19e-01 M 0.59 0.09 6.32 7.92e-09 'a' effect estimates X se t Prob M 0.51 0.09 5.94 4.39e-08 'b' effect estimates Y se t Prob M 0.59 0.09 6.32 7.92e-09 'ab' effect estimates Y boot sd lower upper X 0.3 0.3 0.06 0.19 0.43