“…Qualities of maternal behaviors that appear to hold special developmental significance to their children include emotional support/supportive presence (e.g., Hubbs-Tait et al, 2002), linguistic responsiveness (e.g., Akhtar, Dunham, & Dunham, 1991;Fewell & Deutscher, 2004;Tamis-LeMonda et al, 2001), linguistic complexity (e.g., Hoff-Ginsberg, 1986;Huttenlocher, Vasilyeva, Cymerman, & Levine, 2002), and cognitive complexity (e.g., Diaz, Neal, & Vachio, 1991;Roberts & Barnes, 1992;van Kleeck, Gillam, Hamilton, & McGrath, 1997). Qualities of maternal interactive behaviors explain significant and unique amounts of variance in children's achievements both concurrently (i.e., when measured within the same task or at the same time point, e.g., Diaz et al, 1991;Huttenlocher et al, 2002) and longitudinally (Connor & Cross 2003;Morrison et al, 2003;Pianta & Harbers, 1996), a finding that holds for children developing typically (e.g., Roberts & Barnes, 1992) as well as those exhibiting developmental disabilities or other risk factors (e.g., Crawley & Spiker, 1983;Landry, Smith, Miller-Loncar, & Swank, 1997;Roberts, Jurgens, & Burchinal, 2005;Tamis-LeMonda et al, 2001.…”