1. The document discusses social and personality development in infancy, including the emergence of basic emotions like happiness and sadness from birth, the development of smiling and social referencing between 6-9 weeks and 8-9 months, and the onset of stranger anxiety and separation anxiety around 7-8 months. 2. Attachment forms between infants and caregivers through interactions, with secure attachment being most common. Theories of attachment were proposed by Harlow, Bowlby, and Ainsworth, who studied behaviors in stressful situations. 3. Gender roles begin influencing behavior in infancy, with parents interacting differently with sons and daughters from a young age. Temperament and Erikson's stages of development also influence personality