1.Theoretical and empirical underpinnings of maternal sensitivity: Considerations of sensitivity across cultures and socio-economic status.- 2.Impact of maternal verbal responsiveness on infant language development.- 3.Program development.- 4.Program description.- 5.Program evaluation.- 6.Providers' training.- 7.The session at three months of age: Attending to and understanding baby's signals.- 8.The session at four months of age: Responding to the baby's signals.- 9.The session at five months of age: Respecting baby's pace and space.- 10.The session at six months of age: Engaging in turn-taking.- 11.The session at seven months of age: Helping the baby to focus attention.- 12.The session at eight months of age: Supporting baby's emotional expressions.- 13.The session at nine months of age: Showing the world with words.- 14.The session at ten months of age: The enlargement of the baby's world.- 15.Final Comments.