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document
The role of treatment fidelity on outcomes during a randomized field trial of an autism intervention . This randomized field trial comparing Strategies for Teaching based on Autism Research and Structured Teaching enrolled educators in 33 kindergarten-through-second-grade autism support classrooms and 119 students , aged 5-8 years in the School District of Philadelphia . Students were assessed at the beginning and end of the academic year using the Differential Ability Scales . Program fidelity was measured through video coding and use of a checklist . Outcomes were assessed using linear regression with random effects for classroom and student . Average fidelity was 57 % in Strategies for Teaching based on Autism Research classrooms and 48 % in Structured Teaching classrooms . There was a 9.2-point ( standard deviation = 9.6 ) increase in Differential Ability Scales score over the 8-month study period , but no main effect of program . There was a significant interaction between fidelity and group . In classrooms with either low or high program fidelity , students in Strategies for Teaching based on Autism Research experienced a greater gain in Differential Ability Scales score than students in Structured Teaching ( 11.2 vs. 5.5 points and 11.3 vs. 8.9 points , respectively ) . In classrooms with moderate fidelity , students in Structured Teaching experienced a greater gain than students in Strategies for Teaching based on Autism Research ( 10.1 vs. 4.4 points ) . The results suggest significant variability in implementation of evidence-based practices , even with supports , and also suggest the need to address challenging issues related to implementation measurement in community settings .
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Intervention_Educational
treatment fidelity
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Intervention_Educational
Teaching
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Intervention_Educational
Program fidelity
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Intervention_Other
video coding
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Outcome_Mental
Program fidelity
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Outcome_Physical
Average fidelity
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Outcome_Physical
Differential Ability Scales score
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Outcome_Mental
Differential Ability Scales score
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Outcome_Physical
fidelity
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Outcome_Other
students in Structured Teaching experienced
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Outcome_Other
Strategies for Teaching based on Autism Research
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Participant_Condition
autism
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Participant_Sample-size
33
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Participant_Age
kindergarten-through-second-grade
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Participant_Condition
autism
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Participant_Sample-size
119
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Participant_Age
aged 5-8 years
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Participant_Condition
Autism
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Participant_Condition
Autism