Causality and ability beliefs: An introduction to confounders and colliders

Causal inference is a fundamental goal of many research endeavors, including scholarship in the field of language education and learning. Randomized controlled trials are considered an ideal design to test causal claims, but not all claims can be subjected to experimental treatment due to ethical an...

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Main Authors: Ali H. Al-Hoorie, Phil Hiver
Format: Article
Language:English
Published: Adam Mickiewicz University in Poznań 2025-06-01
Series:Studies in Second Language Learning and Teaching
Subjects:
Online Access:https://pressto.amu.edu.pl/index.php/ssllt/article/view/48231
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author Ali H. Al-Hoorie
Phil Hiver
author_facet Ali H. Al-Hoorie
Phil Hiver
author_sort Ali H. Al-Hoorie
collection DOAJ
description Causal inference is a fundamental goal of many research endeavors, including scholarship in the field of language education and learning. Randomized controlled trials are considered an ideal design to test causal claims, but not all claims can be subjected to experimental treatment due to ethical and practical constraints. In this article, we provide an overview of the conditions under which causal inference may be made from observational data. This includes recognition of the role of confounders and colliders; the former are common causes of the independent and dependent variables and must be controlled, while the latter are common effects and must not be controlled. We illustrate these ideas with two examples involving ability beliefs and demonstrate them through directed acyclic graphs. We discuss the implications of this approach to causal inference from observational data, specifically in individual differences in language learning research, highlighting the need for explicit modeling of causal relationships and the risk of the atheoretical inclusion of variables, whether as controls, predictors, or covariates.
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spelling doaj-art-f1decd5dbec14ea19ed2ed2d5b5fed652025-08-20T03:09:44ZengAdam Mickiewicz University in PoznańStudies in Second Language Learning and Teaching2083-52052084-19652025-06-0115222724910.14746/ssllt.4823178194Causality and ability beliefs: An introduction to confounders and collidersAli H. Al-Hoorie0https://orcid.org/0000-0003-3810-5978Phil Hiver1https://orcid.org/0000-0002-2004-7960Royal Commission for Jubail and Yanbu Florida State University Causal inference is a fundamental goal of many research endeavors, including scholarship in the field of language education and learning. Randomized controlled trials are considered an ideal design to test causal claims, but not all claims can be subjected to experimental treatment due to ethical and practical constraints. In this article, we provide an overview of the conditions under which causal inference may be made from observational data. This includes recognition of the role of confounders and colliders; the former are common causes of the independent and dependent variables and must be controlled, while the latter are common effects and must not be controlled. We illustrate these ideas with two examples involving ability beliefs and demonstrate them through directed acyclic graphs. We discuss the implications of this approach to causal inference from observational data, specifically in individual differences in language learning research, highlighting the need for explicit modeling of causal relationships and the risk of the atheoretical inclusion of variables, whether as controls, predictors, or covariates.https://pressto.amu.edu.pl/index.php/ssllt/article/view/48231dagd-separationsubstantiationovercontrol biasendogenous selection bias
spellingShingle Ali H. Al-Hoorie
Phil Hiver
Causality and ability beliefs: An introduction to confounders and colliders
Studies in Second Language Learning and Teaching
dag
d-separation
substantiation
overcontrol bias
endogenous selection bias
title Causality and ability beliefs: An introduction to confounders and colliders
title_full Causality and ability beliefs: An introduction to confounders and colliders
title_fullStr Causality and ability beliefs: An introduction to confounders and colliders
title_full_unstemmed Causality and ability beliefs: An introduction to confounders and colliders
title_short Causality and ability beliefs: An introduction to confounders and colliders
title_sort causality and ability beliefs an introduction to confounders and colliders
topic dag
d-separation
substantiation
overcontrol bias
endogenous selection bias
url https://pressto.amu.edu.pl/index.php/ssllt/article/view/48231
work_keys_str_mv AT alihalhoorie causalityandabilitybeliefsanintroductiontoconfoundersandcolliders
AT philhiver causalityandabilitybeliefsanintroductiontoconfoundersandcolliders