This authoritative and multidisciplinary book presents new evidence about the developmental and clinical significance of infant crying in early life. Crying is now understood not only as a sign, but also as a symptom of problematic functioning in early development, leading to the new conceptualization of this behavior described by the authors.
Ronald G. Barr, MDCM, FRCP-C Vancouver, British Columbia, Canada. Ronald G. Barr, MA, MDCM, FRCP-C, developed and tested prevention materials referred to as the Period of PURPLE Crying in collaboration with Marilyn Barr. He is the Canada Research Chair in Community Child Health Research at the University of British Columbia and Professor of Pediatrics in the Faculty of Medicine at UBC.