Effects of varying levels of treatment integrity on toddler aggressive behavior

Katrina N. Rhymer, Tawny N. Evans-Hampton, Merilee McCurdy, T. Steuart Watson

Research output: Contribution to journalArticlepeer-review


Effects of different levels of treatment integrity for a time-out intervention in relation to the aggressive behavior of an 18-month-old were investigated. The time-out intervention was composed of four steps and treatment integrity was systematically varied at 50%, 25%, 75%, and 100%. The results suggest that the 75% and 100% treatment integrity conditions were most effective for decreasing aggressive behavior. Further, there were only minor differences in aggressive behavior between the 25% and 50% treatment integrity conditions. Discussion focuses on the need for assessing optimal and minimum levels of treatment integrity for producing behavior change and the implications for classroom-based interventions.

Original languageEnglish
Pages (from-to)75-82
Number of pages8
JournalSpecial Services in the Schools
Issue number1-2
StatePublished - 2002


  • Aggressive behavior
  • Alternating treatment design
  • Preschool children
  • Time-out
  • Treatment integrity


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