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Improving the reliability of a Maladaptive Behavior Scale.

L MacDonald1

  • 1Department of Social Services, Edmonton, Alberto, Canada.

American Journal of Mental Retardation : AJMR
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

This study operationalized frequency terms on the Maladaptive Behavior Scale, improving its reliability and usefulness. Numerical definitions enhanced interrater agreement for adaptive behavior assessment.

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Area of Science:

  • Psychometrics
  • Behavioral assessment
  • Rehabilitation psychology

Background:

  • The Maladaptive Behavior Scale (MBS) was developed by modifying the AAMD Adaptive Behavior Scale (ABS) Part II.
  • Operationalizing frequency terms like 'occasionally' and 'frequently' in the MBS presented challenges.
  • Previous versions lacked precise numerical definitions for these temporal adverbs.

Purpose of the Study:

  • To describe a methodology for operationalizing frequency terms on the Maladaptive Behavior Scale.
  • To enhance the numerical definitions of 'occasionally' and 'frequently' for improved behavioral assessment.
  • To increase the reliability and utility of the ABS Part II through methodological refinement.

Main Methods:

  • Utilized modal ratings from staff at 28 rehabilitation agencies.
  • Defined frequency terms ('occasionally', 'frequently') numerically on a revised scale.
  • Compared interrater reliability and item-by-item agreement between the original and revised scales.

Main Results:

  • The revised scale, with operationalized frequency terms, showed slightly greater interrater reliability.
  • Item-by-item agreement was also marginally improved on the revised scale.
  • Raters' comments supported the revised scale's enhanced clarity and utility.

Conclusions:

  • The described methodology effectively operationalized frequency terms on the Maladaptive Behavior Scale.
  • Numerical definitions of frequency terms can enhance the reliability and usefulness of adaptive behavior scales.
  • Similar approaches may improve other sections of the Adaptive Behavior Scale, Part II.