Which researcher(s) is/are responsible for the publication of textbooks documenting the sexual behaviors of men and women in 1948 and 1953, respectively?

Amy designed her preschool classroom with several play areas that may accommodate groups of children so they could learn from each other

Her classroom shows the influence of ______, who thought that children learn from other children as well as from adults. Fill in the blank with correct word

Which of the following are Thomas and Chess's (1956) categories of temperament?

a. happy, grumpy, angry b. calm, excited, agitated c. passive, aggressive, average d. easy, difficult, slow-to-warm-up