Bagozzi, R.P.(2007). On the Meaning of Formative Measurement and How It Differs from Reflective Measurement:  comment on Howell, Breivik, and Wilcox (2007). Psychological Methods, 12, 229-237.

Howell, R. D., Breivik, E., & Wilcox, J. B. (2007). Is formative measurement really measurement? Reply to Bollen (2007) and Bagozzi (2007).Psychological Methods, 12(2),  238-245.