Infants of depressed mothers, although competent learners, fail to learn in response to their own mothers' infant-directed speech.
Kaplan PS, Bachorowski JA, Smoski MJ, Hudenko WJ. Infants of depressed mothers, although competent learners, fail to learn in response to their own mothers' infant-directed speech. Psychol Sci. 2002 May; 13(3):268-71.