Working memory capacity predicts language comprehension in schizophrenic patients

There remains limited consensus about whether individual differences in working memory capacity, influences mental representation updating during language comprehension. We argue that this question was not sufficiently examined in previous psycholinguistic studies due to methodological limitations. In the current study, we examine whether individual differences in keeping track of mental representations of objects during real-time language comprehension could be predicted by digit span, reading span, nonverbal intelligence, executive function, and visual working memory capacity. Data were collected from 26 adults who completed a battery of cognitive tests and an eye-tracking experiment using the visual world paradigm. In the eye-tracking experiment, participants listened to sentences that either indicated a substantial or a minimal change of state on the target object while viewing a visual scene depicting the target object in two conflicting states – being intact and being changed, along with two unrelated distractors. As expected, participants’ visual attention was directed to the visual depiction of the target object that matched the implied end state in the language. Importantly, we demonstrate that individual differences in cognitive abilities influence whether participants shift their attention to the language-mediated object-state representations.

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Working Memory in Aphasia

American Journal of Speech-Language Pathology ◽

10.1044/1058-0360(2005/012) ◽

2005 ◽

Vol 14 (2) ◽

pp. 107-118 ◽

Cited By ~ 34

Author(s):

Heather Harris Wright ◽

Rebecca J. Shisler

Keyword(s):

Working Memory ◽

Language Processing ◽

Language Comprehension ◽

Theoretical Basis ◽

Working Memory Capacity ◽

Memory Capacity ◽

Theoretical Framework

Recently, researchers have suggested that deficits in working memory capacity contribute to language-processing difficulties observed in individuals with aphasia (e.g., I. Caspari, S. Parkinson, L. LaPointe, & R. Katz, 1998; R. A. Downey et al., 2004; N. Friedmann & A. Gvion, 2003; H. H. Wright, M. Newhoff, R. Downey, & S. Austermann, 2003). A theoretical framework of working memory can aid in our understanding of a disrupted system (e.g., after stroke) and how this relates to language comprehension and production. Additionally, understanding the theoretical basis of working memory is important for the measurement and treatment of working memory. The literature indicates that future investigations of measurement and treatment of working memory are warranted in order to determine the role of working memory in language processing.

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Differential Effects of Executive Processes on Working Memory

Journal of Individual Differences ◽

10.1027/1614-0001/a000211 ◽

2016 ◽

Vol 37 (4) ◽

pp. 239-249

Author(s):

Xuezhu Ren ◽

Tengfei Wang ◽

Karl Schweizer ◽

Jing Guo

Keyword(s):

Working Memory ◽

Cognitive Processes ◽

Latent Variable ◽

Working Memory Capacity ◽

Memory Capacity ◽

Attention Control ◽

Executive Processes ◽

Differential Effects ◽

Prepotent Response ◽

Two Measures

Abstract. Although attention control accounts for a unique portion of the variance in working memory capacity (WMC), the way in which attention control contributes to WMC has not been thoroughly specified. The current work focused on fractionating attention control into distinctly different executive processes and examined to what extent key processes of attention control including updating, shifting, and prepotent response inhibition were related to WMC and whether these relations were different. A number of 216 university students completed experimental tasks of attention control and two measures of WMC. Latent variable analyses were employed for separating and modeling each process and their effects on WMC. The results showed that both the accuracy of updating and shifting were substantially related to WMC while the link from the accuracy of inhibition to WMC was insignificant; on the other hand, only the speed of shifting had a moderate effect on WMC while neither the speed of updating nor the speed of inhibition showed significant effect on WMC. The results suggest that these key processes of attention control exhibit differential effects on individual differences in WMC. The approach that combined experimental manipulations and statistical modeling constitutes a promising way of investigating cognitive processes.

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Working Memory Capacity and a Notorious Brain Teaser

Experimental Psychology (formerly Zeitschrift für Experimentelle Psychologie) ◽

10.1027/1618-3169.53.1.123 ◽

2006 ◽

Vol 53 (2) ◽

pp. 123-131 ◽

Cited By ~ 29

Author(s):

Wim De Neys ◽

Niki Verschueren

Keyword(s):

Working Memory ◽

Secondary Task ◽

Working Memory Capacity ◽

Memory Capacity ◽

Task Load ◽

Normative Reasoning ◽

Monty Hall Dilemma ◽

Monty Hall ◽

Memory Resources

Abstract. The Monty Hall Dilemma (MHD) is an intriguing example of the discrepancy between people’s intuitions and normative reasoning. This study examines whether the notorious difficulty of the MHD is associated with limitations in working memory resources. Experiment 1 and 2 examined the link between MHD reasoning and working memory capacity. Experiment 3 tested the role of working memory experimentally by burdening the executive resources with a secondary task. Results showed that participants who solved the MHD correctly had a significantly higher working memory capacity than erroneous responders. Correct responding also decreased under secondary task load. Findings indicate that working memory capacity plays a key role in overcoming salient intuitions and selecting the correct switching response during MHD reasoning.

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