Reading skill and memory scanning.

Four experiments using a total of 48 3rd–4th graders investigated differences between skilled and less skilled readers in the rate with which they scan memory. In each experiment, Ss read 1–3 unrelated statements, then answered a yes–no question pertaining to 1 of the statements. The primary result from Exps I and II, in which Ss read all material aloud, was that skilled readers answered questions approximately .6 sec faster than less skilled readers when reading time was partialed out. In Exp III, similar results were found for silent reading. In Exp IV, the difference in answering time found in Exps I–III was no longer significant when the scan component in answering was minimized. (8 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of word identification speed in skilled and less skilled beginning readers.

Three phases comprise the development of word reading skill: accuracy, automaticity, and speed. The 3rd phase is reached when components of the identification process (i.e., graphic, phonological, semantic) are unitized in memory for particular words. Attainment of this final phase was explored with 2 experiments. In Exp I with Ss from 1st-, 2nd-, and 4th-grade classes, skilled and less skilled readers identified familiar printed words, CVC nonwords, digits, and pictures. Attainment of unitized speeds to printed words was inferred if Ss identified words as rapidly as digits. This level was exhibited by skilled readers in all grades but by less skilled readers only in 4th grade. Unitized speed with CVCs was evident among 2nd- and 4th-grade skilled readers, but not among less skilled readers at any grade. In Exp II, 18 1st-grade and 19 2nd-grade poor readers practiced reading familiar words and CVCs. Practice boosted RTs to CVCs but not to words read accurately before training, and RTs to both remained slower than digit RTs, indicating that practice promotes the development of unitized speeds very slowly in less skilled readers. (45 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of cognitive effort and word distinctiveness on learning disabled and nondisabled readers' recall.

Explored the notion that differences in word recall between skilled and learning disabled (LD) readers are related to cognitive effort in 3 experiments. Ss were 12 skilled readers (mean age 13.6 yrs) and 12 LD readers (mean age 13.5 yrs) in Exp I, 12 skilled readers (mean age 12.20 yrs) and 12 LD readers (mean age 11.63 yrs) in Exp II, and 24 skilled readers (mean age 8.75 yrs) and 24 LD readers (mean age 8.55 yrs) in Exp III. Cognitive effort represents the mental input to which a limited-capacity attentional system expands to produce a response. Manipulation of primary task difficulty (anagram solutions) and subsequent performance on a secondary task (word recall of correctly solved anagrams) was used to infer cognitive effort. The primary task included manipulations of word list organization and task orientation instructions. In general, after a difficult primary task, secondary task performance was higher for skilled readers than it was for LD readers. Ability group interactions occurred for word list organization and task orientation instructions. It is suggested that the amount of cognitive effort that can be effectively expended to produce a distinctive memory trace is related to individual differences in attentional capacity. Specifically, skilled readers' encoded memory traces under high-effort conditions contained more distinct semantic information than did the traces of LD readers. (35 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The tongue-twister effect in reading Chinese.

Two studies demonstrate a visual tongue-twister effect (TTE) in Chinese and add support to the assumption that reading in any writing system engages a phonological memory system. Exp 1 showed that for both oral and silent reading, Ss took longer to read texts with repeated initial phonemes (IPs) than to read control stories with mixed IPs. Exp 2 verified the phonemic nature of the TTE in a dual task situation in which Ss had to retain a string of digits while reading a sentence. The results showed a specific-phoneme interference such that Ss took longer to read the texts when digits and words had the same IPs than when they had different phonemes. Both studies provide evidence that the source of the TTE in both Chinese and English is phonological interference rather than visual confusion. They confirm the highly general nature of phonological involvement in skilled sentence reading. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effects of syntactic expectations during reading.

Two experiments examined the effects of knowing the syntactic structure of a sentence before reading it. In Exp I, 24 college students were required to remember a sequence of numbers before reading a sentence displayed at a constant rate. When the syntactic structure was known beforehand, Ss were able to devote more effort to rehearsing the numbers while reading the sentence. Consequently, their recall of the number sequence was superior. In Exp II, 8 undergraduates were timed while reading individual sentences. When the syntactic structure was known beforehand, reading times decreased. Results are explained in terms of linguistic decisions, memory storage during reading, and reading as an interactive process. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Echoic memory processes in good and poor readers.

Conducted 4 experiments to determine whether echoic memory plays a role in differences between good and poor readers. In Exp I, with 9 poor (mean age 11.05 yrs) and 9 good (mean age 10.9 yrs) readers, and Exp II, with 12 poor (mean age 10.85 yrs) and 12 good (mean age 10.7 yrs) readers, a suffix procedure was used in which the S was read a list of digits with either a tone control or the word go appended to the list. For lists that exceeded the length of the Ss' memory span by 1 digit (i.e., that avoided ceiling effects), poor readers showed a larger decrement in the suffix condition than did good readers. In Exp III, with 14 poor (mean age 10.64 yrs) and 14 good (mean age 10.83 yrs) readers, Ss shadowed words presented to 1 ear at a rate determined to give 75–85% shadowing accuracy. The item presented to the nonattended ear were words and an occasional digit. At various intervals after the presentation of the digit, a light signaled that the S was to cease shadowing and attempt to recall any digit that had occurred in the nonattended ear recently. Whereas good and poor readers recalled the digit equally if tested immediately after presentation, poor readers showed a faster decline in recall of the digit as retention interval increased. In Exp IV, using Ss from Exp II, bursts of white noise were separated by 9–400 msec of silence, and the S was to say whether there were 1 or 2 sounds presented. There were no differences in detectability functions for good and poor readers. (39 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of word imagery on reading performance as a function of reader ability.

Conducted 3 experiments on the effects of word imagery, length, and frequency on reading difficulty. Ss were 27 8-10 yr old poor readers in Exp I, 24 8-11 yr old good readers in Exp II, and 10 poor and 10 good readers (mean age 9 yrs 6 mo) in Exp III. High frequency words were found to be easier to read for both good and poor readers. High-imagery words were easier to read for poor readers only. Word length had little effect on reading difficulty for either good or poor readers. The differential effect of word imagery on reading difficulty for good and poor readers is interpreted in terms of the types of reading strategy used--phonics for good readers and whole word reading for poor readers. When children are forced to learn to read words by a whole word method, word imagery predicts ease of learning for both good and poor readers. (23 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Immediate spatial order memory and item memory in sixth-grade children as a function of reader ability.

16 good and 16 poor 6th-grade readers served as Ss. Exp I tested immediate order memory for strings of 4 and 6 consonants that were either redundant (R) or nonredundant (NR) based on positional frequencies of letters in printed English. Both reader groups were better in retrieving order for R strings; poor readers were inferior to good readers on both R and NR 6-letter strings. Exp II tested for immediate order memory and immediate item memory for strings of 8 digits and strings of 8 consonants. Good readers were better than poor readers on all tasks. However, order memory appeared to be more strongly related to reading ability than was item memory. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reading ability and single-letter orthographic redundancy.

Two experiments investigated the role of one form of intraword orthographic redundancy: the characteristic asymmetric spatial distributions of letters of the alphabet across serial positions within words. In Exp I, 81 college students demonstrated recognition knowledge of these distributions when given only the letter name, word length, and serial position information with no other context. Ss were correct more often for those letters which are least variable across serial positions. In Exp II, 28 5th graders who were skilled readers demonstrated a sensitivity to letter positional distributions similar to that of the adults; 20 poor readers did not. However, performance was equivalent for both good and poor readers on a subset of letters relatively unpredictable with respect to serial position. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Are general resource notions still viable in reading research?

Conducted 2 experiments to explore the interplay between reading subcomponent efficiency and comprehension processes in terms of resource competition. In Exp 1, adults were tested on the efficiency of lexical access, semantic memory access, verbal working memory span, contextual priming, and the efficiency with which anaphors are resolved. The profile was used to predict the efficiency of high-level inference generation when readers control the pace of reading. In Exp 2, this profile was used to predict the efficiency of high-level inferencing as text was presented at a preset rate. The data suggest that when readers control reading rate, they compensate for subcomponent inefficiency such that high-level comprehension is unrelated to this inefficiency. However, when they must follow along, those who possess more efficient reading subcomponents make high-level inferences more efficiently. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of components of reading skill.

Verbal coding efficiency and listening comprehension ability were assessed in 100 skilled and less skilled readers in 2nd, 3rd, and 5th grades. Younger and less skilled readers differed from older skilled readers on both factors. However, as verbal coding speed increased, comprehension skill became the more important predictor of reading skill. Results are interpreted within a limited processing capacity model of reading. Verbal coding processes, which are slow, reduce the amount of attention available for other reading processes, thereby producing deficits in comprehension of what is read. (30 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How do the efficiencies of reading subcomponents relate to looking back in text?

The compensatory-encoding model of reading suggests that experienced readers compensate metacognitively for inefficient reading subcomponents or cognitive resource limitations. For instance, readers with less efficient access to information in working memory are predicted to look back in text more than those with more efficient access to information in working memory. Both groups of readers still have good comprehension. One hundred nine adult readers were measured on the efficiencies of selected reading subcomponents. Texts were read from a computer screen 1 sentence at a time. The extent to which readers looked back in text (reread sentences) was noted. Those with more efficient access to information in verbal working memory looked back less, consistent with the model. Theoretical and educational implications are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Reading skill and the role of verbal experience in decoding.

Previous studies have shown that decoding speeds are generally faster for skilled readers than for less skilled readers. In Exp I with 66 3rd and 4th graders, this reader difference was found to be greater for pseudowords and 2-syllable units than for English words and 1-syllable units. Exps II and III, with 20 4th and 12 3rd graders, respectively, provided skilled and less-skilled readers with various types of experience with pseudowords prior to 2 decoding tests, vocalization latency and same–different decisions. Aural and printed experience with pseudowords provided significant increases in decoding speeds for both reader groups, but providing meanings for pseudowords as a part of the experiences added nothing. These effects were still present after 10 wks. Results suggest that decoding differences are not wholly attributable to prior experience with word units and that processes involving phonetic components may be involved. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Isolation of a cytokinin gene, ZOG1, encoding zeatin O-glucosyltransferase from Phaseolus lunatus

University students who were skilled or less-skilled readers were compared on tests of auditory information processing and immediate serial recall of auditory and visual digits. Reading skill was defined by performance on a pseudoword reading task. The good readers exhibited typical modality effects with higher recall of auditory than visual items from the last 3 serial positions. On the terminal list item, the less-skilled readers showed a modality effect comparable with that of the skilled readers, but on other list items the modality effect reversed and a visual superiority was obtained. Results were discussed in terms of C. G. Penney's (1989) separate-streams model of short-term verbal memory.     

Reading strategies for children and adults: A quantitative model.

Developed an additive model to account for reading times for 2 different reading tasks (reading for retention and reading for comprehension). The reading strategies of 48 college students and 64 5th graders and individual differences between fast and slow readers were examined. Ss were assumed to have processors that handle the lexical, structural, and meaning information in sentences. The various task, age, and reading speed groups were hypothesized to use the 3 processors for differing amounts of time. The model was supported by word-by-word reading times for 80 sentences and by 9 empirical indices of lexical, structural, and meaning attributes of text. Results show that for skilled adult Ss, relatively more time was spent processing structure in the retention task, and meaning in the comprehension task. Fifth graders had not fully mastered the connection between task demands and linguistic processors shown by adults, and thus used mixtures of the adult strategies. (101 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Unusual modality effects in less-skilled readers.

University students who were skilled or less-skilled readers were compared on tests of auditory information processing and immediate serial recall of auditory and visual digits. Reading skill was defined by performance on a pseudoword reading task. The good readers exhibited typical modality effects with higher recall of auditory than visual items from the last 3 serial positions. On the terminal list item, the less-skilled readers showed a modality effect comparable with that of the skilled readers, but on other list items the modality effect reversed and a visual superiority was obtained. Results were discussed in terms of C. G. Penney's (1989) separate-streams model of short-term verbal memory. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differential utilization of syntactic and semantic information by skilled and less skilled readers in the intermediate grades.

Administered to 270 4th–6th graders the Culture Fair Intelligence Test and the Comprehension subtest of the Gates-MacGinitie Reading Tests. Matched pairs of skilled and less skilled readers then read aloud a variety of material in cloze procedure format and printed in geometric transformations. The extent to which the syntactic and semantic constraints of the text guided their performance was assessed. Both on the cloze procedure and the transformed texts, skilled readers made greater use of grammatical and contextual information. Furthermore, there was no significant improvement across grade levels in the proportions of syntactically and semantically appropriate responses. The stability of differences between skilled and less skilled readers suggests the possibility that differential utilization of syntactic and semantic cues by beginning readers might contribute to differences among them in the development of reading skill. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Individual differences in writing: Implications of translating fluency.

Provides theoretical detail for the model of writing proposed by J. R. Hayes and L. S. Flower (1980), particularly in relation to (1) subcomponents of the translating process, specifically the processes of sentence generation and lexical retrieval, and (2) processing constraints imposed by working memory limitations. In 2 experiments the components of the translating process were examined in elementary and middle-school students identified as either skilled or less skilled writers. Skilled writers showed more fluent sentence-generation processes than did less skilled writers; this was revealed in their better performance on reading span and speaking span tasks. Skilled writers were also faster and more accurate than less skilled writers in a lexical decision task thus indicating that lexical retrieval is more fluent for skilled writers. Fluent translating processes may help to reduce working memory load during writing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive processes as predictors of word recognition and reading comprehension in learning-disabled and skilled readers: Revisiting the specificity hypothesis.

Examines how cognitive processes interrelate as well as predict learning-disabled (LD) readers' word recognition and reading comprehension performance. Correlations between phonological, orthographic, semantic, metacognitive, and working memory measures with reading performance were examined in LD and skilled readers (aged 8–12 yrs). LD Ss were deficient on all cognitive processes compared with skilled Ss, but these differences do not reflect IQ scores. Reading ability group differences emerged on a component composed primarily of working memory measures (referred to as "g") as well as unique components, suggesting that these differences emerge on both general and specific (modular) processes. G best predicts reading comprehension for both groups, and phonological awareness best predicts skilled Ss' pseudoword reading, whereas g best predicts LD Ss' pseudoword performance. Overall, LD Ss' information processing difficulties were described within a general working memory model that views such children as having difficulty accessing and coordinating both general and specific processes. Results suggest that the cognitive processes that contribute to reading deficits are best understood in the context of their combination with other operations rather than in isolation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Effect of Relevance Instructions on Reading Time and Learning.

The authors examined the effect of prereading relevance instructions on reading time and learning for 2 types of text. Experiment 1 found that relevance instructions increased learning for relevant segments without increasing reading time when reading a scientific text sentence by sentence on a computer. In contrast, the same segments were learned less well and took longer to read when nonrelevant. Experiment 2 replicated the findings when individuals read an informational narrative text. These findings supported the no increased effort hypothesis, which states that relevant information is learned better without additional effort when readers are told what is relevant prior to reading. In contrast, nonrelevant information is learned less well. The authors attribute these effects to the goal-focusing nature of relevance instructions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)