Family, (59), 957-965.Epstein, Joseph (1997). O, brother! (birth order’s effect on human behavior). Commentary, (103), 51-55.Graeber, Laurel (1997). Talking Timetable: Personality, not intelligence affects when your child will speak. Parents Magazine, (72), 90-92.Oshima-Takane, Y., Goodz, E., & Deverensky, J.L. (1996). Birth Order Effects on Early Language Development: Do Secondborn Children Learn from Overheard Speech? Child Development, (67), 621-634.Parker, Wayne D. (1998). Birth-Order Effects in the Academically Talented. Gifted Child Quarterly, (42), 29-37....