Which of the following statements is supported by research on new parenthood?
◦ After the birth of a baby, the gender roles of husband and wife generally become less traditional.
◦ For most new parents, the arrival of a baby causes significant marital strain.
◦ Sharing caregiving predicts greater parental happiness and sensitivity to the baby.
◦ New parents in troubled marriages usually show an increase in marital satisfaction after a baby is born.