The BIMF was one of thirty-six measures reviewed as part of a study on Becoming a Mother (BAM).  Abstract found here.

Full Citation:

Maxwell, D., & Leat, S. R. (2022). A review of the empirical measures on becoming a mother and their relevance to the American Indian/Native Alaskan mother: implications for research and policy. Journal of Ethnic & Cultural Diversity in Social Work, 1-21.