Intercoder Reliability and Validity of WebPlotDigitizer in Extracting Graphed Data

Quantitative synthesis of data from single-case designs (SCDs) is becoming increasingly common in psychology and education journals. Because researchers do not ordinarily report numerical data in addition to graphical displays, reliance on plot digitizing tools is often a necessary component of this...

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Vydáno v:Behavior modification Ročník 41; číslo 2; s. 323 - 339
Hlavní autoři: Drevon, Daniel, Fursa, Sophie R., Malcolm, Allura L.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Los Angeles, CA SAGE Publications 01.03.2017
SAGE PUBLICATIONS, INC
Témata:
Automatic Data Processing
Behavioral Research - methods
Digitization
Humans
Meta-analysis
Reproducibility of Results
Researchers
Resistance (Psychology)
Validity
meta-analysis
single-case design
data extraction
validity
reliability
ISSN:0145-4455, 1552-4167, 1552-4167
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Shrnutí:Quantitative synthesis of data from single-case designs (SCDs) is becoming increasingly common in psychology and education journals. Because researchers do not ordinarily report numerical data in addition to graphical displays, reliance on plot digitizing tools is often a necessary component of this research. Intercoder reliability of data extraction is a commonly overlooked, but potentially important, step of this process. The purpose of this study was to examine the intercoder reliability and validity of WebPlotDigitizer (Rohatgi, 2015), a web-based plot digitizing tool for extracting data from a variety of plots, including XY coordinates of interrupted time-series data. Two coders extracted 3,596 data points from 168 data series in 36 graphs across 18 studies. Results indicated high levels of intercoder reliability and validity. Implications of and recommendations based on these results are discussed in relation to researchers involved in quantitative synthesis of data from SCDs.
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ISSN:0145-4455
1552-4167
1552-4167
DOI:10.1177/0145445516673998