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The Role of Maintenance and Disengagement in Predicting Reading
Comprehension and Vocabulary Learning
Jessie D. Martin
Georgia Institute of Technology
Zach Shipstead
Colby College
Tyler L. Harrison
University of North Georgia, Dahlonega, Georgia
Thomas S. Redick
Purdue University
Michael Bunting
University of Maryland, College Park, Maryland
Randall W. Engle
Georgia Institute of Technology
This study uses a novel framework based on work by Shipstead, Harrison, and Engle (2016) that includes
measures of both working memory capacity and fluid intelligence in an attempt to better understand the
processes that influence successful reading comprehension at the latent level. Further, we extend this
framework to a second educationally relevant ability: second-language vocabulary learning. A large
sample of young adults received a battery of working memory, fluid intelligence, language comprehen-
sion, and memory updating tasks. The results indicate that individual differences in reading comprehen-
sion and vocabulary learning benefit from the ability to maintain active information, as well as to
disengage from no longer relevant information. Subsequently, we provide an interpretation of our results
based on the maintenance and disengagement framework proposed by Shipstead et al. (2016).
Keywords: maintenance, disengagement, working memory capacity, fluid intelligence, reading
comprehension
Despite decades of research examining processes necessary for
successful reading comprehension, we still do not fully understand
or agree on the cognitive construct which underlie performance.
For example, we have established that working memory capacity
is important for predicting reading comprehension performance
(Daneman & Carpenter, 1980); however, a substantial amount
of-variance remains unaccounted for in studies exploring the re-
lationship between working memory capacity and reading com-
prehension (Borella, Carretti, & Pelegrina, 2010;Chiappe, Siegel,
& Hasher, 2000;Christopher et al., 2012;Engle, Cantor, & Car-
ullo, 1992;Was & Woltz, 2007). In an attempt to further explain
other factors that are essential to performance, many of these
studies have begun to take an increasingly fractionated approach to
filling in the pieces. This deconstructive approach has resulted in
seemingly conflicting conclusions regarding mechanisms of inter-
est, and has not left room for individual differences in mechanisms
used in retrieval as well as organized forgetting. In an effort to
return to a more parsimonious approach, we proposed a more
process-general latent variable framework for the understanding of
individual differences in reading comprehension.
Specifically, we contend that the current foundation for understand-
ing reading comprehension has overemphasized the use of tasks
which primarily reflect maintenance of information, while ignoring
the beneficial role of forgetting— or what we will refer to as disen-
gagement. We argue that individual differences in reading compre-
hension are not strictly related to maintenance processes captured by
complex span measures of working memory capacity, but also to
disengagement processes captured by measures of fluid intelligence.
This approach is based on work by Shipstead et al. (2016) that
defines the primary mechanisms of executive attention in terms of
general processes of maintenance and disengagement (reflected in
complex span and fluid intelligence measures, respectively), rather
than through increasingly specified mechanistic functions like
shifting, updating, and inhibition (Miyake et al., 2000; see Fried-
man & Miyake, 2017 for an updated perspective). We will identify
advantages to our process general approach as well as limitations
to current, more deconstructive, approaches including those that
emphasize the role of processing speed (Christopher et al., 2012)
This article was published Online First June 6, 2019.
Jessie D. Martin, Department of Psychology, Georgia Institute of Tech-
nology; Zach Shipstead, Department of Psychology, Colby College; Tyler
L. Harrison, Department of Psychology, University of North Georgia,
Dahlonega, Georgia; Thomas S. Redick, Department of Psychology, Pur-
due University; Michael Bunting, Center for the Advanced Study of
Language, University of Maryland, College Park, Maryland; Randall W.
Engle, Department of Psychology, Georgia Institute of Technology.
This work was supported by grants from the Office of Naval Research
(N00014-12-1-0406 and N00014-12-1-1011) to Randall W. Engle.
Correspondence concerning this article should be addressed to Jessie D.
Martin, Department of Psychology, Georgia Institute of Technology, North
Avenue NW, Atlanta, GA 30332. E-mail: jessie.martin@gatech.edu
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Journal of Experimental Psychology:
Learning, Memory, and Cognition
© 2019 American Psychological Association 2020, Vol. 46, No. 1, 140–154
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