Individual Differences in the Inference of Word Meanings From Context: The Influence of Reading Comprehension, Vocabulary Knowledge, and Memory Capacity.

Two studies investigated the ability to use contextual information in stories to infer the meanings of novel vocabulary by 9-10-year-olds with good and poor reading comprehension. Across studies, children with poor reading comprehension were impaired when the processing demands of the task were greatest. In Study 2, working memory capacity was related to performance, but short-term memory span and memory for the literal content of the text were not. Children with poor reading comprehension were not impaired in learning novel vocabulary taught through direct instruction, but children with both weak reading comprehension and vocabulary were. Implications for the relation between vocabulary development and text comprehension are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Word knowledge and working memory as predictors of reading skill.

Three measures of working memory capacity and three measures of word knowledge were used as predictors of three different measures of reading skill. The results demonstrated that the size of a reader's vocabulary and the speed of accessing it are independent of a "depth" measure of word knowledge and that reading comprehension, reading speed, and text inferencing ability are all independent measures of reading skill. A series of regression analyses were conducted to derive a causal model of the three reading performance measures. The results indicated that working memory efficiency during reading was related to comprehension, whereas a more passive working memory capacity measure was related to reading speed. Moreover, text inferencing ability was related only to word knowledge. We conclude that concepts such as "reading skill," "working memory," and "word knowledge" are multidimensional constructs that cannot be captured by a single variable. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Aging, memory load, and resource allocation during reading.

To test the notion that aging brings an inability to self-initiate processing, the authors investigated the effects of memory load on online sentence understanding. Younger and older adults read a series of short passages with or without a simultaneous updating task, which would be expected to deplete resources by consuming memory capacity. Regression analyses of word-by-word reading times onto text variables within each condition were used to decompose reading times into resources allocated to the array of word-level and textbase-level processes needed for comprehension. Among neither the young nor the old were word-level processes disrupted by a simultaneous memory load. However, older readers showed relatively greater levels of resource allocation to conceptual integration than the younger adults when under load, regardless of working-memory span or task priority. These results suggest that the ability to self-initiate the allocation of processing resources during reading is preserved among older readers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Text comprehension in Chinese children: Relative contribution of verbal working memory, pseudoword reading, rapid automated naming, and onset-rime phonological segmentation.

The present study examined the role of verbal working memory (memory span, tongue twister), 2-character Chinese pseudoword reading, rapid automatized naming (letters, numbers), and phonological segmentation (deletion of rimes and onsets) in inferential text comprehension in Chinese in 518 Chinese children in Hong Kong in Grades 3 to 5. It was hypothesized that verbal working memory, together with a small contribution from the other constructs, would explain individual variation in the children's text comprehension. Structural equation modeling and hierarchical multiple regression analyses generally upheld the hypotheses. Though Chinese pseudoword reading did not play an important mediating role in the effect of verbal working memory on text comprehension, verbal working memory had strong effects on pseudoword reading and text comprehension. The findings on the Chinese language support current Western literature as well as display the differential role of the constructs in Chinese reading comprehension. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Developing fluent text processing with practice: Memorial influences on fluency and comprehension.

A great deal of research has examined predictors related to the development of reading fluency and reading comprehension. Whilst a number of studies support the relationship between the development of reading fluency and subsequent improvements in reading comprehension, many studies have shown faster and more accurate decoding does not automatically lead to better comprehension. Often overlooked is the role of the text representation that is encoded in memory during reading and its influence on skilled reading comprehension. In this article, the authors review literature that explores the relationship between text representation and fluent reading. Based upon the results of this review, the authors suggest that the type of representation formed during reading is closely related to the development of both skilled reading comprehension and fluent reading. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Working memory and individual differences in comprehension and memory of text.

Attempted to determine whether working memory processes measured by the Reading Span Test would be strongly associated with the ability to integrate information from different parts of a passage to infer an idea not explicitly stated in the passage. The study also assessed the influence of working memory processes on ability to encode explicitly stated and inferred information into long-term memory. 29 undergraduates were administered a letter span test and a reading span test. The ability to store and process information in working memory was shown to be positively related to (a) scores on a standardized reading comprehension test, (b) long-term memory encoding and retrieval of explicitly stated text information, and (c) integration of text information for the purpose of drawing inferences. Variations in only the storage capacity of working memory were not related to these measures. It is concluded that the ability to coordinate storage and process functions in working memory may be an important determinant of text processing skill, especially with respect to encoding information into long-term memory. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Resilient readers? University students who are poor recoders but sometimes good text comprehenders.

The authors screened 194 university students to determine whether some could comprehend text well despite very poor recoding skills, measured by pseudoword reading. Most of the 17 poorest recoders had never been identified as reading disabled. We classified 6 poor recoders as "resilient readers" because their text comprehension scores were average or above, relative to the sample as a whole. They were indistinguishable from 6 matched typical readers on measures of text comprehension derived from oral-reading think-aloud protocols. There was no evidence that the resilient readers relied on superior verbal ability or working memory to compensate for poor recoding. The resilient readers were poor at spelling, reading isolated words, and reading text rapidly, but they showed adequate phonemic awareness. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Working memory and aphasia

This study investigated the relationship between working memory capacity and reading comprehension in aphasia. A measurement of working memory capacity was obtained using a modified version of Daneman and Carpenter's (1980) Reading Span Task. Sets of sentences ranging in length from one to six words were presented to 22 aphasic subjects who were required to retain the terminal words following each sentence for subsequent recognition. The maximum number of words retrieved was used as an index of working memory capacity. Two versions of the task (listening and reading) were presented depending on the subjects' ability to read. Strong positive correlations were found between working memory capacity, reading comprehension, and language function. These results support the notion that the ability of aphasic individuals to comprehend language is predictable from their working memory capacities.     

Relation among error detection, sentence verification, and low-level reading skills of fourth graders.

The author explored the relation among low-level reading skills, sentence verification, and error detection in 4th graders. Literal text comprehension was measured with the Sentence Verification Technique (J. M. Royer, in press) procedure. A higher (strategic) level of text comprehension was assessed with the error detection paradigm. Thus low- and high-level text comprehension were correlated with low-level reading skill: decoding, lexical access, verbal working memory span, and each other. Although literal text comprehension and low-level reading measures were correlated, both were uncorrelated with error detection. A second study deomonstrated that 4th graders' error detection was best predicted by their tendency to generate inferences while reading. These data suggest that although literal text comprehension is dependent on low-level reading processes, strategic reading competence reflects the 4th grader's tendency to go beyond literal information in a text. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

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

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. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The use of nonword repetition as a test of phonological memory in children with Down syndrome

Recent research suggests a significant relationship between verbal short-term memory and normal language development. Although poor short-term memory and impaired language are features of Down syndrome there has been little investigation of the relationship between these functions in this population, and no studies have included the nonword repetition test devised by Gathercole and Baddeley on which much of the evidence from normal development is based. This study reports the use of nonword repetition with 33 children and teenagers with Down syndrome aged from 5 to 18 years, and investigates the relationship between this test and other memory and language measures. Word repetition was included as an indirect control for the perceptual and speech impairments often associated with this group. Words were repeated significantly more successfully than nonwords and both these tasks were sensitive to word length. Nonword repetition was significantly correlated with age, and when age and nonverbal cognitive ability were controlled, nonword repetition was significantly correlated with all other language-based memory measures, i.e. auditory digit span, word span, sentence repetition, and fluency, and also with memory for a sequence of hand movements, but not with memory for faces or a visual digit span task. There was also a significant relationship between nonword repetition and receptive vocabulary, language comprehension, and reading. When performance on the word repetition task was controlled in addition to age and nonverbal ability, significant correlations between nonword repetition and word span, sentence memory, hand movements, language comprehension, and reading remained. Fewer relationships between auditory digit span and these other measures were established; in particular, there was no association between digit span and the language and reading measures. Results suggest that nonword repetition is a reliable measure of phonological memory in Down syndrome and can predict language comprehension and reading ability.     

Increasing first graders' reading accuracy and comprehension by accelerating their reading rates.

I carried out four experiments to determine the effects on decoding mistakes and comprehension of test passages at fastest and slowest reading rates. The subjects of the first three studies were 161 Israeli first graders, and those of the last experiment were 61 American first graders reading English. Analysis of reading rates obtained during a self-paced condition provided the base rates for each subject. I hypothesized that because of the constraints of short-term memory, requiring subjects to maintain their own maximal oral reading rates would result in improvements in both reading accuracy and comprehension. When presented with the text at their maximal normal reading rates, subjects averaged fewer reading errors and higher comprehension scores than in the self-paced conditions. By contrast, when the text was presented at the slowest reading rates, subjects' decoding accuracy improved, but their comprehension decreased significantly. In one of the experiments, the text contained deliberate letter-substitution errors. Increased reading rate once more reduced the overall errors and increased comprehension. In addition, the deliberate mistakes were more frequently corrected to normal words than in the self-paced condition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Distinctions between reading comprehension and locating information in text.

Reading comprehension is usually operationalized as text recall. However, locating information such as facts, names, or numbers in text is a reading task requiring comprehension that is distinct from text recall in two respects: (1) cognitive processes that control reading comprehension and locating information are expected to be different; (2) the frequency of engagement in comprehension and locating are expected to be independent. We examined these expectations by identifying 4 reading tasks frequently performed by 45 electronics engineers and technicians. Real world reading tasks were simulated with sets of test items in the following domains: (a) comprehending articles, (b) locating information in schematics, (c) locating information in articles, and (d) locating information in manuals. Factor analyses for both the engineers and technicians resulted in two factors, one for comprehension (a) and one for locating information (b, c, d), with a correlation of less than .20. Factor analyses of reading engagement for both groups resulted in factors of (a) comprehending articles, (b) locating information in articles, (c) reading schematics, and (d) reading manuals. Canonical correlations for both groups showed no association between reading engagement variables and reading competence (comprehending and locating) variables. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Facilitating text memory with additional processing opportunities in rapid sequential reading.

Previous research indicates that during conventional reading, readers pause at particular loci within a text, presumably for the purpose of higher level processing and integration. If such pausing is necessary for efficient text comprehension and memory, then providing readers with equivalent processing opportunities with strategically placed pauses in rapid sequential visual presentation (RSVP) text displays should facilitate comprehension and memory. Three experiments are reported in which various time parameters of RSVP displays are manipulated. The results indicate that memory for specific text is facilitated when additional processing time is provided. However, how and where the additional time is distributed within a text, over broad limits, is not important. We use a method of text memory assessment that is not typically used in RSVP research and that is more sensitive to text presentation manipulations than the commonly used multiple-choice questions. The fill-in-the-blank technique also provides evidence that memory representations for texts are structured as meaningful subsentence units. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Short-term retention of discourse during reading.

In 2 experiments, 68 3rd, 4th, and 6th graders at different reading levels were given a probe memory task assessing the availability in working memory of recently read discourse segments. During oral and silent reading (Exp I), retention was related to segment length and the occurrence of a sentence boundary. The limits on retention were tested by increasing segment length and difficulty (Exp II). For these segments, performance of less skilled readers was uniformly low, whereas that of the skilled and older readers continued to be affected by length and sentence boundary. Relationships between individual differences in verbal coding processes and short-term retention of discourse as well as implications for text comprehension models are discussed. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Domain-specific knowledge and memory performance: A comparison of high- and low-aptitude children.

Two studies compared memory performance and text comprehension of groups that were equivalent on domain-specific knowledge but differed in overall aptitude, to investigate whether prior knowledge about a particular domain or overall aptitude level was more important when the task was to acquire and use new information in the domain of interest. Both studies dealt with third-, fifth-, and seventh-grade soccer experts' and novices' memory and comprehension of a story dealing with a soccer game. Several measures of memory performance, memory monitoring, and text comprehension were used. Levels of soccer knowledge and of overall aptitude were varied in a factorial design. Neither study detected significant differences between high-aptitude and low-aptitude experts, regardless of their ages. Low aptitude experts outperformed high-aptitude novices on all memory and comprehension measures. The results indicate that domain-specific knowledge can compensate for low overall aptitude on domain-related cognitive tasks. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of genre expectations on text comprehension.

This article investigates whether expectations about discourse genre influence the process and products of text comprehension. Ss read texts either with a literary story or with a news story as the purported genre. Subsequently, they verified statements pertaining to the texts. Two experiments demonstrated that Ss reading under a literary perspective had longer reading times, better memory for surface information, and a poorer memory for situational information than those reading under a news perspective. Regression analyses of reading times produced findings that were consistent with the memory data. The results support the notion that readers differentially allocate their processing resources according to their expectations about the genre of a text. (PsycINFO Database Record (c) 2010 APA, all rights reserved)