Merie

There was a good article on this in 2008 by Diamantopoulos, Riefler and Roth in Journal of Business Research. It is on Researchgate:

https://www.researchgate.net/profile/Adamantios_Diamantopoulos/publication/222652088_Advancing_formative_measurement_models/links/09e4151406c288b6b3000000.pdf

 Also this smart PLS guide may help? - It is however reserved to use of smart PLS - There are equivalent guides for AMOS

file:///C:/Users/BSNBMCCL/Downloads/Smartpls.pdf

Article Advancing Formative Measurement Models

Thank you Robert for sharing the article. It is useful. However, I am looking for practical instructions for Amos. 

Hi, please look at the AMOS manual by James Arbuckle. It is available online. Another great source is Barbara Byrne's book "Structural equation modelling using AMOS".

Merie, this article by Temme and Hildebrand, Formative measurement models in covariance structure analysis: Specification and identification, may be helpful for you:

Abstract:

Many researchers seem to be unsure about how to specify formative measurement models in software programs like LISREL or AMOS and to establish identification of the corresponding structural equation model. In order to make identification easier, a new, mainly graphically oriented approach is presented for a specific class of recursive models with formative indicators. Using this procedure it is shown that some models have erroneously been considered underidentified. Furthermore, it is shown that specifying formative indicators as exogenous variables rises serious conceptual and substantial issues in the case that the formative construct is truly endogenous (i. e. influenced by more remote causes). An empirical study on the effects and causes of brand competence illustrates this point.

http://edoc.hu-berlin.de/series/sfb-649-papers/2006-83/PDF/83.pdf

Regards, Karin

Thank you Karin

formative construct modelling Practical instructions for Amos can be done by computing each of your construct into mean and then once you compute, make it as single factor and drag all the mean computed into the dialogue box.