疑问:
①根据结果来看,路径1和路径2都是完全中介作用,路径3(positive -> doctor -> trust)没有中介作用。这样看结果是否正确?
②针对路径3,我单独做了model4(简单中介分析)的时候,直接效应不包含0,间接效应包含0,是一个完全中介。为什么做成链式中介之后,反而没有中介作用了呢?
这是结果:
Run MATRIX procedure:
Model = 6
Y = trust
X = positive
M1 = negative
M2 = doctor
**************************************************************************
Outcome: negative
Model Summary
R R-sq MSE F df1 df2 p
.1357 .0184 1.1446 11.5672 1.0000 617.0000 .0007
Model
coeff se t p LLCI ULCI
constant 1.7864 .1311 13.6242 .0000 1.5289 2.0439
positive -.0830 .0244 -3.4011 .0007 -.1310 -.0351
**************************************************************************
Outcome: doctor
Model Summary
R R-sq MSE F df1 df2 p
.2320 .0538 6.9298 17.5271 2.0000 616.0000 .0000
Model
coeff se t p LLCI ULCI
constant 12.8436 .3680 34.9049 .0000 12.1210 13.5662
negative .5427 .0991 5.4790 .0000 .3482 .7373
positive -.0897 .0606 -1.4799 .1394 -.2088 .0293