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### Moderating Effects and two concept questions

Posted: Wed Dec 14, 2005 7:56 pm
Hi, there

In terms of the Moderating Hypothesis, We can have X as independent construct and Y as dependent construct. Z is the Moderating construct. X has reflective indicators X1-X2-X3, Y has Y1-Y2-Y3. Z has Z1, Z2, Z3. And we have Z1*X1, Z1*X2, and 7 others for the Interaction Effects’ construct.

But when I draw the three construct together, how I can know the Moderating effect is strong not weak? For example, X-> Y is 0.25; Z-> Y is -0.04; X*Z-> Y is 0.46. So can we say the negative relationship between Z and Y means Moderating Effect is strong (or weak)? And how to explain the positive 0.46 between the Interaction Effects (X*Z) and the dependent construct (Y)?

Also, what is the concept of ‘loadings’ and ‘weights’? Both SmartPLS 2.0 and AMOS 5 manual do not contain the two terms. Does Alpha means loadings and a small '1' in AMOS model means weights?

Posted: Thu Jan 05, 2006 10:24 am
Kehan,

provided your path coefficients (X->Y and Z*X->Y) are both significant (Z->Y will likely not be), your results indicate a strong moderating effect of Z on the X->Y relationship. Chin (1998) provides the following interpretation of the Z*X->Y path coefficient:

0.25 is the X->Y path coefficient at Z=0
0.25+0.46=0.71 is the X->Y path coefficient at Z=1

Hope this helps.

Stefan

### 'Goodness of Fit'

Posted: Fri Jan 06, 2006 8:42 am
Dear Stefan,