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There is a world outside of experimental designs

Title: There is a world outside of experimental designs: Using twins to explore causation.
Name(s): Hart, Sara, author
Taylor, Jeanette, author
Schatschneider, Christopher, author
Type of Resource: text
Genre: text
Issuance: serial
Date Issued: 2013
Physical Form: computer
Physical Form: online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: This study introduces a co-twin control method commonly used in the medical literature but not often within educational research. This method allows for a comparison of twins discordant for an "exposure", approximating alternative outcomes in the counterfactual model. Example analyses use data drawn from the Florida Twin Project on Reading to determine if exposure to "teacher quality", measured by growth in oral reading fluency (ORF) scores of classmates, causally affects ORF performance of twins in the subsequent years. The analysis highlights Proc Mixed in SAS, including a novel expansion to allow for nested data. Results from 2,788 twins suggested that being in classrooms with lower teacher quality in first grade leads to lower ORF scores in second and third grade with little indication of possible genetic or environmental confounding.
Identifier: FSU_migr_psy_faculty_publications-0003 (IID), 10.1177/1534508412451490 (DOI)
Note: This is an Author's Accepted Manuscript of an article published in Assessment for Effective Intervention, 2009 © Sara Hart, Jeanette Taylor, and Christopher Schatschneider, available online at:
Citation: Hart, S.A., Taylor, J., Schatschneider, C. (2013). There is a world outside of experimental designs: Using twins to explore causation. Assessment for Effective Intervention, 38(2), 117-126.
Subject(s): Psychology
Persistent Link to This Record:
Owner Institution: FSU
Is Part of Series: Department of Psychology Faculty Publications.
Is Part Of: Assessment for Effective Intervention.