If you are the parent of an especially fussy or colicky baby, you may wonder whether their temperament at this early age is a sign of later behavior problems. Well, this a perfect case to illustrate the complex science that is the study of child development.
Hemmi MH, Wolke D, & Schneider S (2011). Associations between problems with crying, sleeping and/or feeding in infancy and long-term behavioural outcomes in childhood: a meta-analysis. Archives of disease in childhood PMID: 21508059