The issues here are how much less than 24 hours a day can an infant and mom be together and still bond satisfactorily, and when can it start being less than 24 hours a day? This study says it can start very early for a workday length of time, but it's better if it starts a few months after birth and is only part time at first.
This is in line with last year's study from NICHD. (I think. I read it when it came out, but that was last year or sometime, and with my memory, God knows if it really says that.)
*This is a brand new journal. A newspaper article about the study popped up in a Google search. It has some very interesting stuff in it. You have to register to see full PDFs, but it's free. The inaugural issue's contents are:
- Social Connections in the Inner City: Examination across the Life Course
- Long-term trends in BMI: are contemporary childhood BMI growth references appropriate when looking at historical datasets?
- Family Socialization, Economic Self-Efficacy, and the Attainment of Financial Independence in Early Adulthood
- Handling attrition and non-response in longitudinal data
- Development of nighttime bladder control from 4 – 9 years: association with dimensions of parent rated child maturational level, child temperament and maternal psychopathology.
- Does mothers’ employment affect children’s development? Evidence from the children of the British 1970 Birth Cohort and the American NLSY79