1. Introduction: crying as a sign, a symptom and a signal: evolving concepts of crying behavior Ronald G. Barr, Brian Hopkins and James A. Green; 2. Can we hear the cause of infants' crying? Gwen E. Gustafson, Rebecca M. Wood and James A. Green; 3. Crying as an indicator of pain in infants Kenneth D. Craig, Cheryl A. Gilbert and Christine M. Lilley; 4. Colic - the 'transient responsivity' hypothesis Ronald G. Barr and Megan Gunnar; 5. Clinical pies for etiology and outcome in infants presenting with early increased crying Liisa Lehtonen, Siobhan Gormally and Ronald G. Barr; 6. Crying complaints in the emergency department Steven Poole and David Magilner; 7. Crying in the child with a disability: the special challenge of crying as a signal James A. Blackman; 8. Toddlers' temper tantrums: flushing and other visible autonomic activity in an anger-crying complex Michael Potegal; 9. Acoustic cry analysis, neonatal status and long-term developmental outcome James A. Green, Julia R. Irwin and Gwen E. Gustafson; 11. Crying in infant primates: insights into the development of crying in chimpanzees Kim A. Bard; 12. Development of crying in normal infants: method, theory and some speculations Brian Hopkins; 13. The crying infant and toddler: challenges and promissory notes Ronald G. Barr, Brian Hopkins and James A. Green; Index.