Working Memory and Attention – A Conceptual Analysis and Review

Oberauer, Klaus · 2019 · DOAJ

DOI: 10.5334/joc.58

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Summary

This review article by Klaus Oberauer (2019) addresses the conceptual relationship between working memory (WM) and attention. While there is broad consensus that these constructs are intimately linked, the specific nature of this link remains theoretically ambiguous. The paper aims to organize these theoretical options into a coherent map, delineate their implications, and evaluate the empirical evidence supporting each. The analysis distinguishes between two primary conceptualizations of attention: as a limited resource and as a mechanism for selective information processing. The review first evaluates theories positing attention as a limited resource responsible for WM’s capacity limits. Three versions are examined: (1) a shared resource for storage and processing, (2) a shared resource for perceptual attention and memory maintenance, and (3) a resource for the control of attention. The first version, which assumes a single resource supports both maintaining representations and executing cognitive operations, receives the strongest empirical support, particularly from dual-task studies showing competition between storage and processing. However, it faces challenges, such as the observation that dual-task costs diminish over time and conceptual difficulties explaining how competition affects memory after processing ends. The second version, linking perceptual attention and WM maintenance, lacks convincing evidence, as dual-task costs between these functions are often negligible or inconsistent. The third version, proposing a shared resource for attentional control and WM, is also poorly supported; experimental evidence does not convincingly show that WM loading depletes resources needed for controlling attention, and correlational data can be explained without invoking a shared resource. The paper then shifts to conceptualizing attention as a selection mechanism rather than a resource. In this framework, attention does not explain WM capacity limits; instead, WM is viewed as an instance of attention—specifically, the selection of memory representations for processing. This perspective raises empirical questions about how information is selected into WM, how items are selected within WM, and how WM interacts with perceptual attention and cognitive control. The review highlights that WM contributes to cognitive control by holding templates for perceptual selection and task sets for action implementation. Conversely, attentional mechanisms filter irrelevant stimuli from entering WM and remove no-longer relevant representations. The significance of this analysis lies in clarifying the theoretical landscape of WM and attention. Oberauer concludes that while the "resource for storage and processing" model is empirically robust, it requires refinement to address its conceptual and empirical anomalies. The alternative view of attention as selection offers a clearer conceptual integration, framing WM as a selective process that interacts with, rather than shares resources with, other attentional functions. This distinction helps resolve ambiguities in the literature and guides future research toward more precise models of how WM supports cognitive control and information selection.

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Topics

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• working memory
• attention
• capacity resource theory
• executive function