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The results of this meta-analytic study showed PET to have an overall effect size of 0.33 standard deviation units, which was significantly greater than the effect size of a group representing alternative treatments. PET has effects on parents' knowledge, attitudes, and behavior and on children's self-esteem, and these effects endured (up to 26 weeks) after the programs were completed. There was a trend suggesting that the effect on child behavior may have a latency period. Better designed studies were found to have significantly greater effect sizes (.45) than less well-designed studies (.26).
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Papers that cite the same references — the relational fallback while embeddings are still backfilling.
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