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Related Experiment Videos

Placebo effects in developmental disabilities: implications for research and practice.

Adrian Sandler1

  • 1Department of Pediatrics, University of North Carolina at Chapel Hill, 28801, USA. adsandler@POL.net

Mental Retardation and Developmental Disabilities Research Reviews
|June 25, 2005
PubMed
Summary

Secretin trials in children with autism revealed significant placebo effects, not true treatment benefits. Understanding these placebo responses is crucial for designing effective clinical trials in developmental disabilities.

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Area of Science:

  • Neuroscience
  • Psychology
  • Clinical Research

Background:

  • Recent secretin trials in children with autism demonstrated substantial placebo effects, overshadowing any therapeutic benefit.
  • This highlights the significant impact of expectancy and sensory experiences on treatment outcomes in pediatric populations.

Purpose of the Study:

  • To explore the multifaceted reasons behind observed placebo effects in clinical trials involving children.
  • To review the mechanisms, biological basis, and research design considerations for placebo effects in neurodevelopmental disorders.

Main Methods:

  • Analysis of clinical trial data from secretin studies in children with autism.
  • Review of existing literature on placebo mechanisms, including expectancy, conditioning, and caregiver behavior.

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  • Examination of "placebology" and its implications for therapeutic research.

    • Main Results:

    • Placebo effects in autism trials were amplified by media attention and the sensory aspects of interventions.
    • Multiple factors contribute to placebo responses, including patient/clinician attributes and conditioning.
    • Placebo controls are ethically necessary and defensible in clinical research under specific conditions.

    Conclusions:

    • Placebo effects are a significant factor in clinical trials for neurodevelopmental disorders, necessitating rigorous research design.
    • The study of "placebology" offers promising avenues for understanding and potentially harnessing placebo responses in therapeutics.
    • Ethical considerations support the use of placebo controls when designed appropriately, ensuring scientific validity and patient welfare.