Answers are grounded in this paper and cite their sources.
Karin Grossmann, Klaus E. Grossmann, Gottfried Spangler, Gerhard Suess, Lothar Unzner, Maternal Sensitivity and Newborns' Orientation Responses as Related to Quality of Attachment in Northern Germany, Monographs of the Society for Research in Child Development, Vol. 50, No. 1/2, Growing Points of Attachment Theory and Research (1985), pp. 233-256
No takes yet. Share an insight, caveat, or question.
Grossmann et al. (1985) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: