When another study looked at Japanese and British newborns, the latter actually showed more self-quieting activity (Eishima, 1992).
A study of Alaskan Inupiaq found young children to be shy but otherwise no different from Euro-American children.
These subjects were, however, older than Freedman’s, being 3 to 6 years of age (Sprott, 2002).
As Freedman noted, “most Navaho infants calmly accept the board; in fact, many begin to demand it by showing signs of unrest when off.” When Euro-American mothers tried using the cradleboard, “their babies complained so persistently that they were off the board in a matter of weeks” (Freedman, 2004).
Infant calmness can thus arise in relatively simple societies, and not just in advanced ones as I had argued in my last post. Dopamine receptor D4 (DRD4) gene in Han Chinese children with attention-deficit/hyperactivity disorder (ADHD): Increased prevalence of the 2-repeat allele, , Greenwood Publishing Group.
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