In the Lovaas (1987) study on behavioral intervention for children with autism, what percentage of participants achieved recovery as defined by the study's criteria?

• A. 47%
• B. 25%
• C. 9%
• D. 42%

Answer: (D)

Verified step by step guidance

1. Understand the context of the Lovaas (1987) study, which investigated the effectiveness of early intensive behavioral intervention for children with autism.
2. Recognize that 'recovery' in this study was operationally defined by specific criteria, such as achieving average IQ scores and mainstream classroom placement without special education services.
3. Recall or review the reported outcomes in the study, focusing on the percentage of children who met these recovery criteria after the intervention.
4. Compare the given answer choices (47%, 25%, 9%) with the actual reported percentage in the study, which is 42%.
5. Note that the correct percentage (42%) is not among the provided options, indicating a need to carefully verify the source or consider that the options may be approximations or errors.