1. Early care and education for children in low-income families: Patterns of use, quality, and potential policy implications;Adams,2007
2. Transition to child care: Associations with infant–mother attachment, infant negative emotion, and cortisol elevations;Ahnert;Child Development,2004
3. Tracking quality in head start classrooms: FACES 2006 to FACES 2014;Aikens,2016
4. Patterns of attachment: Assessed in the strange situation and at home;Ainsworth,1978
5. Patterns of attachment: A psychological study of the strange situation;Ainsworth,1978