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Honoring Uncontrolled Events: Commentary on Slocum et al.

Robert H Horner1, Wendy Machalicek1

  • 1University of Oregon, Eugene, OR USA.

Perspectives on Behavior Science
|October 17, 2022
PubMed
Summary
This summary is machine-generated.

This commentary discusses single-case multiple-baseline designs, particularly the nonconcurrent type. While acknowledging its credibility, concurrent designs offer better internal validity and remain the preferred choice for researchers.

Keywords:
concurrentinternal validitymultiple-baseline designnonconcurrentsingle-case design

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Area of Science:

  • Behavioral Science
  • Experimental Psychology
  • Research Methodology

Background:

  • Single-case experimental designs are crucial for establishing causality in behavioral research.
  • Multiple-baseline designs are a key methodology within single-case research.
  • Recent work reassesses the nonconcurrent multiple-baseline design's utility.

Purpose of the Study:

  • To provide commentary on Slocum et al.'s (2022) reassessment of nonconcurrent multiple-baseline designs.
  • To offer considerations for researchers evaluating single-case multiple-baseline designs.
  • To compare the internal validity of concurrent versus nonconcurrent multiple-baseline designs.

Main Methods:

  • This study is a methodological commentary, analyzing existing research and theoretical frameworks.
  • It critically evaluates the strengths and limitations of nonconcurrent multiple-baseline designs.
  • Comparison is made with concurrent multiple-baseline designs regarding threats to internal validity.

Main Results:

  • Nonconcurrent multiple-baseline designs are a credible approach for demonstrating experimental control.
  • Concurrent multiple-baseline designs offer superior control over threats to internal validity.
  • The concurrent format is recommended as the preferred option for robust research.

Conclusions:

  • The reassessment of nonconcurrent multiple-baseline designs is warranted, elevating their status.
  • Researchers should prioritize concurrent multiple-baseline designs for stronger internal validity.
  • Methodological rigor in single-case research necessitates careful consideration of design choices.