Description
Visual analysis of data is a cornerstone of single-subject research. Yet some researchersFor example, see: Ottenbacher, K. J. (1993). Interrater agreement of visual analysis in single-subject decisions: Quantitative review and analysis. American Journal on Mental Retardation, 98(1), 135–142. have found that experts often disagree about what constitutes an intervention effect. This potential lack of consistency across visual analysts can have negative implications for both research and practice. This tutorial offers a systematic, evidence-basedWolfe, K., & Slocum, T. A. (2015). A comparison of two approaches to training visual analysis of AB graphs. Journal of Applied Behavior Analysis, 48(2), 472-477. procedure for training individuals to conduct valid and reliable visual analyses of single-subject data. It features extensive discrimination training and practice opportunities; adaptive instruction and remediation for errors; and full audio narration in a self-paced, mobile-friendly format.
About the Authors
Katie Wolfe, Ph.D., BCBA-D
Dr. Katie Wolfe is an assistant professor of Special Education in the Department of Educational Studies at the University of South Carolina, where she teaches coursework in applied behavior analysis and early childhood special education. She received her PhD in Disability Disciplines from Utah State University in 2013 and is a Board Certified Behavior Analyst.
Timothy Slocum, Ph.D.
Dr. Timothy A. Slocum is a Professor and Department Head of the Department of Special Education & Rehabilitation at Utah State University. He earned his doctorate in Special Education at the University of Washington in 1991. Dr. Slocum received the 2011 Fred S. Keller Behavioral Education award from Division 25 of the American Psychological Association and the 2014 Ernie Wing Award for Excellence in Evidence-Based Education from the Wing Institute.
Learning Objectives
Upon completing the tutorial, the learner should be able to:
- Describe the basic purposes of single-subject research
- Identify the key parts of line graphs that depict behavioral data
- Define level and estimate the level of a data path
- Define slope and estimate the slope of a data path
- Project the slope of baseline data into the intervention phase to compare the projected data pattern to the actual data pattern
- Identify whether an intervention may have caused a change in the level or slope of behavior
Technical Requirements
The tutorial requires only an active internet connection and a relatively modern web browser with JavaScript enabled.
History
This tutorial was initially developed as part of the first author’s dissertation research at Utah State University. A commercial version was released by FoxyLearning in August 2015, with a significant update released in January 2020.
Survey Results
Below are live results from the voluntary survey users are asked to complete at the end of this module.
You can launch the lessons of the
open-access version of this module using the links below. The open-access version does not include the final quiz or our personal notes tool, but the rest of the content is the same. Please note that your completion of open-access lessons for this module will
not transfer to or count toward the coursepack edition of the module. In addition, completion data for the open-access version may be purged on a regular basis without notice.
Ashley Santiago (verified buyer) –
Featured Review
Wish I had this tutorial a long time ago! So well put together and easy to navigate… also did not take too much time to complete and the content was well worth the price, which was extremely affordable. I would definitely recommend this course to anyone looking to master the basics of visual analysis. I will definitely be looking for other levels of this course as well, so I can further my knowledge from basics to advanced someday.
Rowan Silva (verified buyer) –
it was good and informative, i learned quite well from this pleasing and simple service
Chara Hosom (verified buyer) –
I have a much better understanding of visual analysis now and feel more confident in being able to visually analyze data to determine the effect of treatment. The tutorial provides step by step for the process with a lot of practice and explanations to improve the process of visual analysis.
Jakob Marvin (verified buyer) –
The way each slide only had a small amount of information made it easy to not feel overwhelmed by each slide and encouraged me to keep going.
Kali Carr (verified buyer) –
No feedback, not all the answers were correct. Did not learn anything!
Eric J. Fox, Ph.D. (store manager) –
I’m sorry to hear you did not like the tutorial, though I do not quite understand your comments about it. Extensive feedback is provided throughout the tutorial on all practice activities and knowledge checks (detailed feedback is not provided for questions on the final quiz because that is intended simply as a measure of what you’ve learned, not as an instructional activity). The answers for both practice questions and the final quiz have been double-checked by multiple experts over the years and no errors in their scoring have been detected or reported. If you think there is a specific error in how a question has been scored, please send it to us for review.