Hello all,
My model consists of two constructs (A and B). A has 2 indicator variables (a1 and a2, each having 5 items). Similarly, B has also 2 indicator variables (b1 and b2 each having 5 items).
When I calculate reliability coefficients in SPSS, Cronbach's alpha for A =0.77 and B = 0.75. However, on calculating composite reliability (through CFA), estimates are 0.80 and 0.82 for A and B respectively. Can anyone please help to clarify such differences i.e., why composite reliability is much higher than Cronbach's alpha ?
I would appreciate if some references can be shared for further study.
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