Read When: Your Baby Cries Anyway
Prolonged and unsoothable crying bouts in infants with and without colic. Barr Et all Journal Of Developmental & Behavioural Peadiatrics
Infant Crying and Maternal Responsiveness - Ainsworth & Bell Child Develoment (1972)
Crying Behaviour [full collection of articles in PDF form] Encyclopedia Of Early Childhood Development
While clinical studies remain important, crying research has moved beyond unidisciplinary studies to embrace findings from developmental psychology, biological and cultural anthropology, psychobiology, and neurobiology (among others), and to include both experimental and naturalistic observational studies in ecologically valid settings to provide a more complete understanding of the nature and function of early crying behaviour. Furthermore, the parallel study of both the clinical manifestations and the normative properties of early crying has led to a reconceptualization of the significance of early increased “excessive” crying and “colic.” The argument is that early increased crying (including most cases of so-called “colic”) is a manifestation of normal behavioural development rather than indicative of abnormalities (or “something wrong”) in either the infants or their caregivers. There are also a small number of infants who may have abnormal cries or who are also sick or have something wrong. However, the vast majority (over 95%) of infants with increased crying and colic are normal infants with normal behavioural development.
It is worth noting that, in the normal course of events, crying functions to bring a parent and child into close proximity in an emotionally charged and unusually rewarding situation. In most cases, a crying infant is soothed and the precipitating pain, hunger or discomfort relieved. The discomfort that a caregiver feels in response to the irritating sound of crying is alleviated as well, and he or she is rewarded with a quiet, often alert and happy child. Thus, in the course of psychosocial development, crying provides an ideal context for a parent and child to learn about each other and form an emotional bond.
Why Do Humans Cry? Scientist Says Tears Served as a Means of Communication Before the Evolution of Language - Christine Hsu at Medical Daily MedicalDaily.com
Teary-Eyed Evolution: Crying Serves A Purpose - Allison Aurbey
How to stop tantrums by understanding the brain [video] Dr Dan Seigel
Anything By Dr Daniel Seigel