Effects of long-term vocabulary instruction on lexical access and reading comprehension.

To examine the relationship between knowledge of word meanings and semantic processes, 27 4th-grade children were taught 104 words over a 5-mo period. Following instruction, Ss performed tasks designed to require semantic processes ranging from single word semantic decisions to simple sentence verification and memory for connected text. On all these tasks, instructed Ss performed at a significantly higher level than controls matched on pre-instruction vocabulary knowledge and comprehension. Thus, instructed Ss gave evidence both of learning word meanings taught by the program and of being able to process instructed words more efficiently in tasks more reflective of comprehension. Implications for vocabulary instruction and the role of individual word meanings in comprehension are discussed. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Icons improve older and younger adults' comprehension of medication information

We examined whether timeline icons improved older and younger adults' comprehension of medication information. In Experiment 1, comprehension of instructions with the icon (icon/text format) and without the icon (text-only format) was assessed by questions about information that was (a) implicit in the text but depicted explicitly by the icon (total dose in a 24 hour period), (b) stated and depicted in the icon/text condition (medication dose and times), and (c) stated but not depicted by the icon (e.g., side effects). In a separate task, participants also recalled medication instructions (with or without the icon) after a study period. We found that questions about dose and time information were answered more quickly and accurately when the icon was present in the instructions. Notably, icon benefits were greater for information that was implicit rather than stated in the text. This finding suggests that icons can improve older and younger adults' comprehension by reducing the need to draw some inferences. The icon also reduced effective study time (study time per item recalled). In Experiment 2, icon benefits did not occur for a less integrated version of the timeline icon that, like the text, required participants to integrate dose and time information in order to identify the total daily dose. The integrated version of the icon again improved comprehension, as in Experiment 1, as well as drawing inferences from memory. These findings show that integrated timeline icons improved comprehension primarily by aiding the integration of dose and time information. These findings are discussed in terms of a situation model approach to comprehension.     

Accessibility of outdated information.

In 2 previous studies (O'Brien, Rizzella, Albrecht, & Halleran, 1998; Zwaan & Madden, 2004), researchers have provided conflicting accounts about whether outdated information continues to influence the comprehension of subsequent text. The current set of experiments was designed to explore further the impact of outdated information on comprehension. First, we examined factors that may have contributed to Zwaan and Madden's (2004) finding that outdated information did not influence comprehension. Experiments 1a and 1b demonstrated that when Zwaan and Madden's target sentences were rewritten to move the targeted anaphor away from the end of the sentence, the impact of outdated information emerged with their materials. With a new set of materials, Experiment 2 demonstrated that outdated information continued to disrupt comprehension, even when the updating information created an irreversible change-in-state of a primary object in the story. The results of all 3 experiments are consistent with a passive reactivation process in which outdated information can influence comprehension processes. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Increased processing enhances calibration of comprehension.

Two experiments investigated whether increased processing increases the relation between test performance predictions and test performance, i.e., increases calibration of comprehension. The amount of processing of text was manipulated by having subjects read intact text or text with deleted letters. In Experiment 1, intact versus deleted letters were manipulated within subjects, and subjects made either comprehension ease or test prediction ratings. Paragraphs with deleted letters produced higher correlations between predictions and test performance than did intact paragraphs. Better calibration with more processing was not observed for ratings of comprehension ease. In Experiment 2, in a between-subjects design, the prediction results were replicated; calibration was better for text with deleted letters than for intact text. The results show that subjects can predict performance on text material with greater than chance accuracy and that these predictions are better when subjects do more active processing during reading. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Lexical Information Drives Perceptual Learning of Distorted Speech: Evidence From the Comprehension of Noise-Vocoded Sentences.

Speech comprehension is resistant to acoustic distortion in the input, reflecting listeners' ability to adjust perceptual processes to match the speech input. For noise-vocoded sentences, a manipulation that removes spectral detail from speech, listeners' reporting improved from near 0% to 70% correct over 30 sentences (Experiment 1). Learning was enhanced if listeners heard distorted sentences while they knew the identity of the undistorted target (Experiments 2 and 3). Learning was absent when listeners were trained with nonword sentences (Experiments 4 and 5), although the meaning of the training sentences did not affect learning (Experiment 5). Perceptual learning of noise-vocoded speech depends on higher level information, consistent with top-down, lexically driven learning. Similar processes may facilitate comprehension of speech in an unfamiliar accent or following cochlear implantation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Incorporating learner experience into the design of multimedia instruction.

In Experiment 1, inexperienced trade apprentices were presented with one of four alternative instructional designs: a diagram with visual text, a diagram with auditory text, a diagram with both visual and auditory text, or the diagram only. An auditory presentation of text proved superior to a visual-only presentation but not when the text was presented in both auditory and visual forms. The diagram-only format was the least intelligible to inexperienced learners. When participants became more experienced in the domain after two specifically designed training sessions, the advantage of a visual diagram-auditory text format disappeared. In Experiment 2, the diagram-only group was compared with the audio-text group after an additional training session. The results were the reverse of those of Experiment 1: The diagram-only group outperformed the audio–text group. Suggestions are made for multimedia instruction that takes learner experience into consideration. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Perceptual learning of noise vocoded words: Effects of feedback and lexicality.

Speech comprehension is resistant to acoustic distortion in the input, reflecting listeners' ability to adjust perceptual processes to match the speech input. This adjustment is reflected in improved comprehension of distorted speech with experience. For noise vocoding, a manipulation that removes spectral detail from speech, listeners' word report showed a significantly greater improvement over trials for listeners that heard clear speech presentations before rather than after hearing distorted speech (clear-then-distorted compared with distorted-then-clear feedback, in Experiment 1). This perceptual learning generalized to untrained words suggesting a sublexical locus for learning and was equivalent for word and nonword training stimuli (Experiment 2). These findings point to the crucial involvement of phonological short-term memory and top-down processes in the perceptual learning of noise-vocoded speech. Similar processes may facilitate comprehension of speech in an unfamiliar accent or following cochlear implantation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Learning of event sequences is based on response-effect learning: Further evidence from a serial reaction task.

Four experiments provide converging evidence that serial learning in a serial reaction task is based on response–effect learning, mediated by the learning of the relations between a response and the stimulus that follows it. In Experiment 1, the authors varied the stimulus sequence and the response–stimulus relations while holding the response sequence constant. Learning effects depended on the complexity of the response–stimulus relations but not on the stimulus–stimulus relations. In Experiment 2, transfer of serial learning from 1 stimulus sequence to another was only found when both sequences had identical response–stimulus relations. In Experiment 3, a variation of the stimulus sequence alone had no effect on serial learning, whereas in Experiment 4 learning effects increased when the response–stimulus relations but not the stimulus–stimulus relations were simplified. These findings suggest that serial learning is based on mechanisms of voluntary action control. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Further evidence for hierarchical chunking in rat spatial memory.

In Experiment 1, rats were given a test to determine the order of preference among 3 types of food. Two groups of rats then were trained on a 12-arm radial maze in Experiment 2, with the 3 foods placed in fixed-arm locations for 1 group and in locations that varied randomly across sessions for the other group. The results replicated those of Dallal and Meck (1990) by showing faster learning and more clustering of arm choices by food type in the fixed locations group than in the random-locations group. Two further experiments were performed to test the chunking hypothesis. Observations of working memory in Experiment 3 and the reorganization of reference memory in Experiment 4 both supported the chunking hypothesis by showing superior spatial memory and arm chunking by food type when chunk integrity was maintained than when it was compromised. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

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)     

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)     

The influence of connectives on young readers' processing and comprehension of text.

Connectives are cohesive devices that signal the relations between clauses and are critical to the construction of a coherent representation of a text's meaning. The authors investigated young readers' knowledge, processing, and comprehension of temporal, causal, and adversative connectives using offline and online tasks. In a cloze task, 10-year-olds were more accurate than 8-year-olds on temporal and adversative connectives, but both age groups differed from adult levels of performance (Experiment 1). When required to rate the “sense” of 2-clause sentences linked by connectives, 10-year-olds and adults were better at discriminating between clauses linked by appropriate and inappropriate connectives than were 8-year-olds. The 10-year-olds differed from adults only on the temporal connectives (Experiment 2). In contrast, online reading time measures indicated that 8-year-olds' processing of text is influenced by connectives as they read, in much the same way as 10-year-olds'. Both age groups read text more quickly when target 2-clause sentences were linked by an appropriate connective compared with texts in which a connective was neutral (and), inappropriate to the meaning conveyed by the 2 clauses, or not present (Experiments 3 and 4). These findings indicate that although knowledge and comprehension of connectives is still developing in young readers, connectives aid text processing in typically developing readers. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Learners' questions and comprehension in a tutoring setting.

Three experiments, presented within the framework of Activity Theory, deal with the relationship between adult learners' questions and subsequent comprehension in a tutorial learning setting. Students were first given verbal instructions (acquisition) to a novel card game and then asked to play one hand with the teacher (implementation). In Experiment 1, there was no correlation between number of questions asked during acquisition and comprehension, but questions during implementation were negatively correlated with comprehension. In Experiment 2, learners whose questions were answered during acquisition scored higher than those whose questions were not answered. In Experiment 3, learners whose questions were answered during implementation showed greater gains in comprehension than those whose questions were answered during acquisition. Individual differences in question-asking during implementation but not acquisition were significantly related to comprehension. The results confirm the view that questions answered during knowledge implementation more effectively aid comprehension than those answered during acquisition. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Metacognitive regulation of text learning: On screen versus on paper.

Despite immense technological advances, learners still prefer studying text from printed hardcopy rather than from computer screens. Subjective and objective differences between on-screen and on-paper learning were examined in terms of a set of cognitive and metacognitive components, comprising a Metacognitive Learning Regulation Profile (MLRP) for each study media. Participants studied expository texts of 1000–1200 words in one of the two media and for each text they provided metacognitive prediction-of-performance judgments with respect to a subsequent multiple-choice test. Under fixed study time (Experiment 1), test performance did not differ between the two media, but when study time was self-regulated (Experiment 2) worse performance was observed on screen than on paper. The results suggest that the primary differences between the two study media are not cognitive but rather metacognitive—less accurate prediction of performance and more erratic study-time regulation on screen than on paper. More generally, this study highlights the contribution of metacognitive regulatory processes to learning and demonstrates the potential of the MLRP methodology for revealing the source of subjective and objective differences in study performance among study conditions. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Students' miscomprehension of relational statements in arithmetic word problems.

In Experiment 1, students were asked to write their complete solution processes for arithmetic word problems containing relational statements. Students were more likely to miscomprehend a relational statement when the required arithmetic operation was inconsistent with the statement's relational term, such as having to subtract when the relational term was more than. This effect was magnified when the relational term was marked (e.g., less than) rather than unmarked (e.g., more than). In Experiment 2, students were given information about two variables and asked to generate a statement expressing the relation between them. Students tended to produce relational statements by using unmarked rather than marked comparative terms. Finally, we present a model of word problem comprehension processes that uses schemata as guides to comprehension. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Constraining factors in calibration of comprehension.

Two experiments were conducted to examine the factors leading to poor calibration of comprehension. In Experiment 1, the basic finding of poor calibration was replicated with paragraphs from which a single inference verification was the test of comprehension. It was shown that this lack of calibration could not be attributed to subjects' answering the inferences on the basis of previous world knowledge. Experiment 2 demonstrated that previous studies which assess comprehension with a single inference per text seriously underestimate the level of calibration. As the number of test items per text increases, so does the level of calibration. Finally, mathematical simulations demonstrate that even when the underlying calibration curves are identical, simply adding items to the comprehension test will produce a higher and more reliable estimate of calibration of comprehension. Reanalysis of these data shows that this effect is a formal property of the measures and not simply a psychological testing effect. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effect of organizational cues and strategies on good and poor comprehenders' story understanding.

In two experiments, we investigated the influence of organizational cues on story comprehension by 7- to 8-year-old children, matched in age and decoding skills but differing in comprehension ability. In Experiment 1, children read abstract stories with titles and pictures that did or did not integrate story information. Providing integrative cues improved comprehension by poor, but not good comprehenders, but had no effect on verbatim recall. Both skill groups recalled more main ideas than subsidiary ones. In Experiment 2, two new groups read the stories without pictures or titles. Poor comprehenders trained to look for "clue words" to infer main story consequences, implicit in the stories, showed better comprehension than such children given no training. Good comprehenders performed at a uniformly high level regardless of training. The results are discussed in terms of cognitive control required to select and coordinate information in text. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The role of prior knowledge and elaboration in text comprehension and memory: a comparison of self-generated elaboration and text-provided elaboration

Four experiments investigated the interactive effect of text-provided elaborations and prior knowledge on text comprehension and memory. Subjects read 28 episodes, half of which were associated with well-known people and the other half with unknown people. In Experiment 1, text-provided elaborations enhanced recall only when the reader did not have a high level of prior knowledge. The findings from Experiment 1 were hypothesized to be the result of readers generating relevant elaborations during text comprehension. Experiment 2 supported this hypothesis by providing evidence of self-generated elaborations. The results from Experiments 3 and 4 extended these findings by showing that readers with high prior knowledge automatically generate causally relevant elaborations when the sentences have a low relation.     

Predictable texts and interactive-compensatory hypotheses: Evaluating individual differences in reading ability, context use, and comprehension.

Examined the word-recognition and comprehension processes of 36 1st graders as they read a predictable text. Interactive-compensatory predictions related to comprehension were evaluated. Results suggest that when reading predictable texts, attention for both good and poor readers is available for comprehension processing but for different reasons. Consistent with predictions from the interactive-compensatory model by K. E. Stanovich (1980), good readers were able to attend to the meaning of a story because of automatic, context-free word-recognition skills. Poor readers were able to attend to the meaning of a story because of their automatic use of repetitive sentence context to facilitate word recognition. Thus, predictable texts may be appropriately used to provide comprehension opportunities for poorer readers. Predictable texts may give these students opportunities to engage in inferential reasoning and other comprehension processes, opportunities that infrequently occur because poor readers' attention is usually occupied by word-recognition demands. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Signaling as a cognitive guide in multimedia learning.

In 3 experiments, students received a short science lesson on how airplanes achieve lift and then were asked to write an explanation (retention test) and to write solutions to 5 problems, such as how to design an airplane to achieve lift more rapidly (transfer test). For some students, the lesson contained signals, including a preview summary paragraph outlining the 3 main steps involved in lift, section headings, and pointer words such as because or as a result. The signaling did not add any additional content information about lift but helped clarify the structure of the passage. Students who received signaling generated significantly more solutions on the transfer test than did students who did not receive signaling when the explanation was presented as printed text (Experiment 1), spoken text (Experiment 2), and spoken text with corresponding animation (Experiment 3). Results are consistent with a knowledge construction view of multimedia learning in which learners seek to build mental models of cause-and-effect systems. (PsycINFO Database Record (c) 2010 APA, all rights reserved)