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. Author manuscript; available in PMC: 2009 Dec 10.
Published in final edited form as: Am J Ment Retard. 2007 Mar;112(2):107–121. doi: 10.1352/0895-8017(2007)112[107:PCWBIF]2.0.CO;2

Table 3.

Group Differences in Observed Child Behavior

Typically developing (n = 142)
 Borderline range (n = 29)
 Delayed range (n = 46)
Variable/Factor Mean SD Mean SD Mean SD
Variable
    Positivity 2.84 .71 2.74 .78 2.64 .80
    Negativity 1.30a .34 1.53a,b .53 1.67b .73
    Sociability 3.43a .79 3.16a .90 2.77b .91
    Liveliness/Activity 3.31 .69 3.40 .76 3.35 .76
    Sustained attention 3.97a .63 3.82a .71 3.24b .81
    Demandingness 1.46a .44 1.66a,b .69 1.80b .83
Factor
    Positive Behavior 0.10 .96 –0.05 1.1 –0.29 1
    Difficult Behavior –0.27a .67 0.18a,b 1.1 0.71b 1.4

Note. Means in the same row that do not share subscripts differ at p < .05 in appropriate follow-up tests (Tukey's b, Games-Howell, or simple contrasts).