Infant temperament and high-risk environment relate to behavior problems and language in toddlers.
Derauf C, LaGasse L, Smith L, Newman E, Shah R, Arria A, Huestis M, Haning W, Strauss A, Della Grotta S, Dansereau L, Lin H, Lester B. Infant temperament and high-risk environment relate to behavior problems and language in toddlers. J Dev Behav Pediatr. 2011 Feb-Mar; 32(2):125-35.