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. Author manuscript; available in PMC: 2020 May 1.
Published in final edited form as: J Abnorm Child Psychol. 2019 May;47(5):811–823. doi: 10.1007/s10802-018-0482-y

Table 1.

Means, Standard Deviations, and Range of Scores for Study Variables

Variable n Range M SD

Pregnancy Complications 561 0 to 14 4.65 3.18
Adoption Openness (18 months) 541 −2.73 to 2.05 .00 .95
Adoption Openness (27 months) 483 −2.73 to 2.11 .02 .96
Adoption Openness (54 months) 260 −2.59 to 2.17 .01 .96
Oppositional Behaviors (18 months) 515 .00 to 1.83 .42 .30
Oppositional Behaviors (27 months) 500 .00 to 1.83 .52 .31
Oppositional Behaviors (54 months) 427 .00 to 1.92 .61 .35
Callous-Unemotional Behaviors (18 months) 515 .00 to 1.20 .32 .24
Callous-Unemotional Behaviors (27 months) 499 .00 to 1.20 .26 .22
Callous-Unemotional Behaviors (54 months) 427 .00 to 1.40 .26 .23
Adoptive Mother Harsh Parenting (18 months) 519 1.00 to 4.90 1.86 .60
Adoptive Mother Harsh Parenting (27 months) 495 1.00 to 4.30 2.06 .61
Adoptive Mother Harsh Parenting (54 months) 258 1.00 to 4.60 2.39 .57
Adoptive Father Harsh Parenting (18 months) 491 1.00 to 4.40 1.89 .61
Adoptive Father Harsh Parenting (27 months) 469 1.00 to 4.20 2.06 .62
Adoptive Father Harsh Parenting (54 months) 236 1.00 to 4.30 2.32 .64
Birth Mother Fearlessness 513 7 to 28 14.78 3.47
Birth Mother Affiliation 545 2.13 to 6.00 4.67 .81