X c' a 1 M 2 a 2 b 1 b 2 d 21 e M 2 1 Indirect effect of X on Y through M 1 and M 2 in serial = a 1 d 21 b 2 Model Templates for PROCESS for SPSS and SAS c ?2013 Andrew F. Hayes, / Conceptual Diagram Statistical Diagram Model 6 (3 mediators) Y X M 1 M 3 M 2 Y X M 1 M 3 M 2 e M 3 e Y e M 1 e M 2 c ' b 1 b 2 b 3 a 1 a 2 a 3 d 21 d 32 d 31 1 1 1 1 Indirect effect of X on Y through M i only = a i b i Direct effect of X on Y = c' Indirect effect of X on Y through M 1 and M 2 in serial = a 1 d 21 b 2 Indirect effect of X on Y through M 1 and M 3 in serial = a 1 d 31 b 3 Indirect effect of X on Y through M 1 , M 2 , and M 3 in serial = a 1 d 21 d 32 b 3 Indirect effect of X on Y through M 2 and M 3 in serial = a 2 d 32 b 3
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