In recent years, a literature has emerged describing contributions fathers make to the development of very young children. Scholars suggest that active play may be a specific area of parenting in which fathers are primary and, further, that this type of play helps children experience intense emotions and learn to regulate them. However, this…

Research on the effects of breastfeeding on child cognitive development has produced conflicting results, and many studies do not account for infant stimulation in the home. The aim of this study is to determine whether breastfeeding predicts enhanced cognitive development in one-year-old infants after controlling for the main socio-economic and…

This methodology report documents the design, development, and psychometric characteristics of the assessment instruments used in the second wave of the ECLS-B. The assessment instruments discussed measure children's cognitive development (BSF-R), socioemotional functioning (Two Bags Task), security of attachment (TAS-45), and physical development…

The major objective of this series of studies was to clarify the concept of mastery motivation and to develop measures of this concept applicable to 1-year-old children. Three studies were made with 44 infants, aged 12 to 13 months. The first study, "Aspects of Mastery Motivation and Cognitive Functioning," utilized structured situations…