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Infant Smiling Dynamics and Perceived Positive Emotion.
Messinger DS, Cassel TD, Acosta SI, Ambadar Z, Cohn JF. Messinger DS, et al. J Nonverbal Behav. 2008 Sep 1;32(3):133-155. doi: 10.1007/s10919-008-0048-8. J Nonverbal Behav. 2008. PMID: 19421336 Free PMC article.
Early Interactive Emotional Development.
Messinger DS, Mahoor MH, Cadavid S, Chow SM, Cohn JF. Messinger DS, et al. IEEE Int Conf Dev Learn. 2008 Aug 9;2008:232-237. doi: 10.1109/DEVLRN.2008.4640835. IEEE Int Conf Dev Learn. 2008. PMID: 21804955 Free PMC article.