A theory of the way working memory capacity constrains comprehension is proposed. The theory proposes that both processing and storage are mediated by activation and that the total amount of activation available in working memory varies among individuals. Individual differences in working memory capacity for language can account for qualitative and quantitative differences among college-age adults in several aspects of language comprehension. One aspect is syntactic modularity: The larger capacity of some individuals permits interaction among syntactic and pragmatic information, so that their syntactic processes are not informationally encapsulated. Another aspect is syntactic ambiguity: The larger capacity of some individuals permits them to maintain multiple interpretations. The theory is instantiated as a production system model in which the amount of activation available to the model affects how it adapts to the transient computational and storage demands that occur in comprehension.

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A capacity theory of comprehension: individual differences in working memory.

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Applied Missing Data Analysis

Investigated was whether children would re-enact what an adult actually did or what the adult intended to do. In Experiment 1 children were shown an adult who tried, but failed, to perform certain target acts. Completed target acts were thus not observed. Children in comparison groups either saw the full target act or appropriate controls. Results showed that children could infer the adult's intended act by watching the failed attempts. Experiment 2 tested children's understanding of an inanimate object that traced the same movements as the person had followed. Children showed a completely different reaction to the mechanical device than to the person: They did not produce the target acts in this case. Eighteen-month-olds situate people within a psychological framework that differentiates between the surface behavior of people and a deeper level involving goals and intentions. They have already adopted a fundamental aspect of folk psychology-persons (but not inanimate objects) are understood within a framework involving goals and intentions.

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Understanding the Intentions of Others: Re-Enactment of Intended Acts by 18-Month-Old Children.

The authors report data from a longitudinal study that addresses the relations between working memory capacity and reading comprehension skills in children aged 8, 9, and 11 years. At each time point, the authors assessed children's reading ability, vocabulary and verbal skills, performance on 2 working memory assessments (sentence-span and digit working memory), and component skills of comprehension. At each time point, working memory and component skills of comprehension (inference making, comprehension monitoring, story structure knowledge) predicted unique variance in reading comprehension after word reading ability and vocabulary and verbal ability controls. Further analyses revealed that the relations between reading comprehension and both inference making and comprehension monitoring were not wholly mediated by working memory. Rather, these component skills explained their own unique variance in reading comprehension.

https://psycnet.apa.org/journals/edu/96/1/31.pdf

Children's Reading Comprehension Ability: Concurrent Prediction by Working Memory, Verbal Ability, and Component Skills.

Preface 1. The nature of poor comprehension 2. Background: reading, remembering and understanding 3. Processing words and sentences 4. Inferences and the integration of text 5. Allocating resources during reading 6. Metacognition and reading 7. Using cohesive devices in narrative discourse 8. Methods of improving poor comprehension 9. Conclusions Notes References List of related publications Works cited Indexes.

Children's Problems in Text Comprehension: An Experimental Investigation

Working memory capacity is described as a pool of limited resources that carry out processing and storage functions. Its role has been emphasised in adults' reading comprehension. The present study had two aims: First, to study the relationship between working memory capacity and reading comprehension in fourth-grade children. Second, to study the nature of the working memory resources involved in reading comprehension, i.e., are they specific or general?To test the first point, the predictive power of working memory capacity was compared with two reading-related basic skills, vocabulary and decoding skills. To test the second point, different working memory tasks were devised using verbal, numerical and spatial materials. All the tasks were administered to 48 fourth-grade children. The results showed that working memory capacity was a direct predictor of reading comprehension when contrasted with vocabulary and decoding skills. Moreover, it seemed that working memory would be better described as a system specialised for the processing of symbolic information in that only the verbal and in a lesser extent the numerical working memory tasks were significant predictors of reading comprehension. The spatial task did not correlate with reading comprehension. The reasons accounting for the predictive power of working memory tasks were discussed.

Working memory resources and children's reading comprehension.

This article examines possible working memory deficits in 7-8-year-olds who are accurate readers but relatively poor comprehenders. In Expt 1, poor comprehenders scored below good comprehenders on a non-linguistic test of working memory (reading series of digits and recalling the last digit in each series) on the more taxing items. Experiment 2 examined the relationship between working memory and text comprehension using an anomaly resolution task. Good and poor comprehenders heard stories describing an adult's anomalous emotional response to a child's action, some of which contained information to resolve the anomaly. The load on working memory imposed by the need to integrate the resolution with the anomaly was varied in two ways: the resolution was presented immediately next to, or two sentences distant from, the anomaly, and appeared either before or after the anomaly. Poor comprehenders were worse than good ones at anomaly resolution only when the anomalous and resolving information were separated. The results support the hypothesis that text processing is influenced by working memory demands and suggest that children's comprehension is related to the efficiency of a general non-linguistic working memory system.

Working memory, comprehension ability and the resolution of text anomaly

Multi-user interfaces are said to provide “natural” interaction in supporting collaboration, compared to individual and noncolocated technologies. We identify three mechanisms accounting for the success of such interfaces: high awareness of others' actions and intentions, high control over the interface, and high availability of background information. We challenge the idea that interaction over such interfaces is necessarily “natural” and argue that everyday interaction involves constraints on awareness, control, and availability. These constraints help people interact more smoothly. We draw from social developmental psychology to characterize the design of multi-user interfaces in terms of how constraints on these mechanisms can be best used to promote collaboration. We use this framework of mechanisms and constraints to explain the successes and failures of existing designs, then apply it to three case studies of design, and finally derive from them a set of questions to consider when designing and analysing multi-user interfaces for collaboration.

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Mechanisms for collaboration: A design and evaluation framework for multi-user interfaces

This paper presents a classroom study that investigated the potential of using touch tabletop technology to support children's collaborative learning interactions. Children aged 7-10 worked in groups of three on a collaborative planning task in which they designed a seating plan for their classroom. In the single-touch condition, the tabletop surface allowed only one child to interact with the digital content at a time. In the multiple-touch condition, the children could interact with the digital content simultaneously. Results showed that touch condition did not affect the frequency or equity of interactions, but did influence the nature of children's discussion. In the multiple-touch condition, children talked more about the task; in the single-touch condition, they talked more about turn taking. We also report age and gender differences.

Nicola Yuill

Papers

Children's Problems in Text Comprehension: An Experimental Investigation

Working memory resources and children's reading comprehension.

Working memory, comprehension ability and the resolution of text anomaly

Mechanisms for collaboration: A design and evaluation framework for multi-user interfaces

Around the table: are multiple-touch surfaces better than single-touch for children's collaborative interactions?