How can I find lambda for 2nd order factor??

[s043077]

Dear all,

I have two questions about 2nd order factors.

First, there have three 1st order factors and one 2nd order factor in my research model. All of the 1st order factors are reflective constructs. And the 2nd order is formative construct. I use the repeat indicators approach to perform my research model. But I couldn’t understand how to use the repeat indicators approach correctly.

Approach A　　　　　　　　　　Approach B
indicators ← 1st → 2nd　　　　indicators ← 1st → 2nd
　　　　　　　　　　　↑　　　　　　　　　　　　　　　　↓
　　　　　　　　　　repeat　　　　　　　　　　　　　repeat
　　　　　　　　　indicators　　　　　　　　　　　　indicators

Which approach is correct?

Second, in the repeat indicator approach, I can get lambda of 1st order factors, but the path coefficient between 1st order factors and 2nd factor should be gamma, how can I find lambda for 2nd order factor??

Thank you very much for your help.

Jerry

[Diogenes]

Hi Jerry

1st) The B approach is the correct, see viewtopic.php?t=660&highlight=repeated+indicator (WOLD, 1982, p.40-42).

2nd) The coefficients between 1st and 2nd order LVs should be interpreted and used as lambdas when we have reflective 2nd order LV(see viewtopic.php?t=640), but in your case (formative 2nd order LV) this coefficients are like weights in a multiple regression.

Best regards.
Bido

[s043077]

Dear Professor

Thanks for your reply.

According to yours and others suggestions, I read the book "Systems under indirect observation"(Wold 1982), and solve my questions.

Thank you very much.

Best Regard,
Jerry