Table 4.
Study | Country of origin | Severity of deprivation | Age at assessment | N | Construct measured | Outcome measure | Age at adoption: Distribution | Age at adoption: Measurement | Statistical test | Significant effect of age at adoption? | Form of the relationship? | Relationship with other variables? |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Positive Results | ||||||||||||
Rutter, Kreppner, & O’Connor (2001) | Romania | Globally depriving | 6y | 165 | Quasiautistic features | ASQ, ADI-R (parent-report, experimenter tested) | 58 < 6m, 59 6–24m, 48 24–42m | < 6m, 6–24m, > 24m | chi square trends | yes | — | — |
Rutter, Sonuga-Barke, Beckett, Castle, Kreppner, Kumsta, Schlotz, Stevens, & Bell (2010) | Romania | Globally depriving | 6y, 11y, 15y | 144 | Quasiautism | SCQ for screening, then ADI-R and ADOS (parent-report, experimenter tested) | 58 < 6m, 59 6–24m, 48 24–42m | < 6m, > 6m | none (listed % with problems in each group); regression | yes | — | not mediated by head circumference |
Sonuga-Barke, Beckett, Kreppner, Castle, Colvert, Stevens, Hawkins, & Rutter (2008) | Romania | Globally depriving | 11y | 138 | Quasiautistic features | SCQ (parent-report) | .5m–3y7m | < 6m, > 6m | ANOVA | yes | — | Effect was independent of subnutrition status; not mediated by head circumference |
Mixed Results | ||||||||||||
Colvert, Rutter, Kreppner, Beckett, Castle, Groothues, Hawkins, Stevens, & Sonuga-Barke (2008b) | Romania | Globally depriving1 | 11y | 144 | Theory of mind | Strange Stories Task (experimenter tested) | 58 < 6m, 59 6–24m, 48 24–42m | continuous, < 6m, > 6m | correlation, ANOVA, ANCOVA | yes; ns when correlated only within > 6m group | probable step function at 6m | still significant after co-varying IQ |
Note. Top section includes positive results, bottom section includes mixed results
ASQ = Autism Screening Questionnaire, ADI-R = Autism Diagnostic Interview – Revised, SCQ = Social Communication Questionnaire, ADOS = Autism Diagnostic Observation Schedule, m = months, y = years
This article did not provide information about the conditions of these institutions, but other studies from the same authors on the same sample did describe the severity of the deprivation.