Questionnaire Development

• Select items from pool of items which have been well tested in outpatient treatment settings.
  • Normative information available at the item level
    • Case mix information includes diagnosis, age and sex
    • Item scores for intake and repeated assessments
• Multiple organizations pooling data contribute to robust norms across varied populations
• Item selection employs both Classical Test Theory and Item Response Theory.
  • Special thanks to Warren Lambert, PhD and the Vanderbilt Center for Evaluation and Program Improvement for the use of the Peabody measures and assistance with development of the adult questionnaires.
• Questionnaires are constructed to assure comparability of scores and rate of change across alternative versions
  • Download: ItemChangeCalculator.xls
    • Tool to model comparability of questionnaires
    • Utilizes information on the slope of change for each item.

ACORN Manual Table of Contents

• Introduction
• Description of questionnaires
• Questionnaire Development
• Item Inventory
• Sample Questionnaires
• ACORN Normative Data
• Scoring the questionnaires
• Severity Ranges
• Reliability
• Validity
• Benchmarking Outcomes
• Monitoring change
• Alliance Scale
• ACORN Toolkit Summary Results Viewer
• ACORN Toolkit Help
• Outcomes Measurement Tutorial