David Elkind
David Elkind (born March 11, 1931) is a Jewish-American child psychologist and author. A longtime professor at Tufts University, his groundbreaking books — The Hurried Child, The Power of Play and Miseducation informed early childhood education professionals of the possible dangers of "pushing down" the elementary school curriculum into the very early years of a child's life. By doing so, he argued, teachers and parents alike could lapse into developmentally inappropriate instructional and learning practices that may distort the smooth development of learning. He is associated with the belief of decline of social markers.