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Related Experiment Videos

Percentage agreement and phi: A conversion table.

L M Lewin1, J A Wakefield

  • 1California State College, Stanislaus.

Journal of Applied Behavior Analysis
|July 1, 1979
PubMed
Summary
This summary is machine-generated.

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Applied behavior analysis uses percentage agreement and correlational techniques for reliability. This study demonstrates their formal relationship, offering a conversion table to improve unambiguous reporting and inter-study comparisons.

Area of Science:

  • Applied Behavior Analysis
  • Psychometrics
  • Research Methodology

Background:

  • Human observations in applied behavior analysis (ABA) rely on reliability measures.
  • Commonly used metrics include percentage agreement and correlational techniques like the phi coefficient.

Purpose of the Study:

  • To formally demonstrate the mathematical relationship between percentage agreement and correlational reliability measures.
  • To provide a practical tool for converting between these two common expressions of reliability.

Main Methods:

  • Mathematical derivation of the relationship between percentage agreement and the phi coefficient.
  • Development of a conversion table for interchanging reliability values.

Main Results:

Related Experiment Videos

  • The formal relationship between percentage agreement and phi coefficient was established.
  • A table facilitating the conversion between percentage agreement and phi coefficient was presented.

Conclusions:

  • Reporting both percentage agreement and correlational coefficients (e.g., phi) enhances clarity.
  • Standardized reporting of reliability measures aids in unambiguous communication and comparison across ABA studies.