An independent variable is mediated (X) by two mediating variables (M1 and M2) on a dependent variable (Y). The bootstrap results (AMOS-SEM) are as follows:
Point Estimates Std Error L.B U.B p-value
Direct path
X-->M1 .71 .04 .63 .79 .001
M1-->Y .20 .08 .03 .35 .001
X-->M2 .16 .05 .07 .25 .002
M2-->Y -.30 .08 -.46 -.14 .002
Total Indirect Effect .10 06 -.03 .22 .139
Please help me to explain why the total indirect effect is insignificant when both the paths are separately significant. Even if the opposite directs are the reasons but the indirect mediating effect of X-->M1-->Y is greater (+.14) as compare to an indirect mediating effect of X-->M2-->Y.(-.05). How will I establish a conclusion in this respect? Kindly suggest.