Answer to Question 1
Newborn characteristics inborn individual differences based on genetics, neurophysiology, and coordination of physiological and psychological processes; effortful control, arousal, and emotion (both too much and too life) affect how a child experiences the world
Caregiver characteristics sensitive caregiving in response to an infant's unique temperament, etc., affect both the caregiver and the infant; caregiver affects regulation by how they respond to a child's needs (feeding, comforting, soothing); also impacts infant's personality based on their beliefs about how emotions are expressed which can be based on gender and culture
Child and caregiver characteristics affect each other in dynamic and critical ways
Answer to Question 2
A