After being in press for a remarkably long time, this paper is out:
Collisson, B. A., Grela, B., Spaulding, T., Rueckl, J. G., & Magnuson, J. S. (2015). Individual differences in the shape bias in preschool children with Specific Language Impairment and typical language development: Theoretical and clinical implications. Developmental Science, 18:3, 373-388..pdf