26th Jun, 2020

Al-Zaytoonah University of Jordan

Question

Asked 10th Jun, 2017

I used optimal scaling analysis and set 2 dimensions for the variables, with VAF of 36.6% obtained.

I set 3 dimensions, it's around 46%.

I don't know how much VAF is acceptable.

To me, 2 dimensions is easier to explain and define the dimension.

Thanks.

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The strength of the mediation can be determined from the value of Variance

Accounted For (VAF). VAF value represents the ratio of the Beta Coefficient of

the indirect effect to the total effect. A VAF value bigger than 80% represents full mediation, a VAF value of between 20% and 80% means a partial mediation, while a value below 20% means no mediation (Hair, Ringle & Sarstedt, 2011).

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