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)     

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)     

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)     

Constructing macrostructure for expository text.

In Exp I, 108 (36 Ss at each level) 3rd, 5th, and 7th graders and 36 graduate students read short expository paragraphs and performed tasks that required the generation of macrostructure. Ss chose the best title, wrote a summary sentence, or wrote 1 additional sentence for each paragraph. Some paragraphs were not well structured; others contained an anomalous sentence. Results show that performance improved with age. The title task was easier than the summary task, which in turn was easier than the next-sentence task. Only adult Ss reflected the presence of anomalous information, and the effects were different on each of the 3 tasks. In Exp II, the title task with 4 response options was administered to 24 undergraduates. Results show that Ss broadened their representations to encompass the deviant sentence in both related and unrelated paragraphs. In the summary-sentence task, proficient adults—who monitored their own comprehension—responded like children. It is suggested that children need instruction variations in both task and in text, introduced gradually and systematically, in order to deal with potential sources of difficulty. (25 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How to assess the listening comprehension skills of prereaders.

In Exp I, a listening span test, a word span test, and a listening comprehension test were administered to 24 preschoolers (ages 3 yrs 2 mo to 5 yrs 2 mo) to determine whether listening span correlated well with Ss' listening integration skills. In Exp II, with 20 preschoolers (aged 3 yrs 4 mo to 5 yrs) a longer listening comprehension test was administered in which comprehension depended on the integration of at least 2 important ideas in the narrative. Results show that the measure of listening span was a successful measure of the listening comprehension skills of prereaders because it tapped skills at an intermediate level of complexity. The word span measure involved lower-level processes like word encoding and lexical access, but listening span captured many of the processes of normal sentence comprehension. In addition, listening span was easy to administer and had high predictive validity. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of children's understanding of the metalinguistic term word..

Designed 3 experiments to assess 24 preschool (mean age 64.63 mo), 24 1st-grade (mean age 76.25 mo), and 24 2nd grade (mean age 88.61 mo) children's understanding of the term word. A modified aural discrimination task was used in which Ss were required to discriminate word from nonword stimuli along only 1 dimension at a time. Exp I tested Ss' discrimination of words and sounds. Exp II examined word–phrase differentiation. Both of these experiments followed previous research in examining children's comprehension of the term word in relation to nouns. Exp III examined Ss' understanding of word with stimuli from a variety of form classes. Results indicate that Ss' word concepts have been underestimated in past research suggesting that young children lack an adequate word concept: although preschool Ss did not understand the term properly, by 1st grade word was understood. These experiments also show that Ss benefited from brief training in which they were taught to attach the metalinguistic label word to their developing concept of the word as a unit of spoken language. (38 ref) (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)     

Vowel generalization in normal and learning disabled readers.

Studied vowel–sound associations in 20 learning disabled (LD) children, 20 normal readers matched with the LD children for reading vocabulary (the VM group), and 20 normal readers matched with the LD sample on age (the AM group). All Ss were drawn from a population of LD and normal children in Grades 2–6 in a middle-class school district. The 3 groups were given the Vowel Generalization Test, which includes 25 regularly spelled words, 25 irregularly spelled words, and 25 nonsense words. Responses to each of the 3 item sets were scored according to vowel pronunciation (regular, irregular, and ungeneralized—vowel responses that are never signaled by the orthographic construction of a particular word), consonant pronunciation (correct or incorrect), and overall correctness. Results of ANOVA with post hoc comparisons showed that the LD and AM groups differed on all measures. However, comparisons of the LD and VM groups primarily revealed a tendency of the LD Ss to apply regular vowel associations less frequently and to apply ungeneralized vowel associations more frequently than the VM group. It is concluded that LD children are less likely than normal readers to apply major pattern associations in decoding unknown words and tend instead to produce vowel sounds that are never signaled by the particular orthographic construction. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Age differences in memory for item and source information.

Investigated the effects of normal aging on source amnesia in 2 experiments. In Exp I, 31 young adults (mean age 19.4 yrs) and 30 older adults (mean age 69.2 yrs) were taught real facts about Canada. One week later they were asked to recall the facts and remember where they had learned them. Findings show that the older people exhibited greater amounts of forgetting of the source of their knowledge. Exp II, which used 24 young adults (mean age 23.3 yrs) and 24 older adults (mean age 69.7 yrs), confirmed the findings of Exp I using made up facts. It is suggested that the finding of source amnesia in older, normal people has implications for theories of amnesia and, possibly, for theories of frontal lobe functions. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Processing deficits in Turner's syndrome.

Exp I compared 31 female 11–28 yr old Turner syndrome (TS) Ss and 31 matched controls on a mental rotation task. Although both groups utilized the some rotation strategy, TS Ss were less accurate and slower than controls in the rotational component of the task. Exp II compared 23 TS Ss and 23 matched controls (mean age 15.4 yrs) on a sentence verification task. No differences were observed between the groups in accuracy, strategy, or processing rates, although RTs of the TS group were significantly longer. Exp III studied a set of 12.5-yr-old dizygotic twins, one of whom had TS. Results replicate the findings of Exps I and II. Also discussed are the specific processing deficits in TS and the role of biological factors that may contribute to them. (67 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Story comprehension and recall in learning-disabled versus normal college students.

24 learning-disabled (LD) and 24 normal college students rated stories on the importance of their idea units. LD Ss showed significantly less agreement on their importance ratings than the normal Ss. Ss also selected 12 idea units as retrieval cues, one group before and the other after recall. This task showed that normal Ss selecting cues after recall used a different strategy than those selecting cues before recall; LD Ss did not vary their cue-selection strategy as a function of experience. In spite of these differences, recall increased significantly at higher importance levels for both ability groups, and recall did not differ for LD and normal Ss who selected retrieval cues after recall. Cue selection before recall, however, depressed performance of LD Ss relative to that of the normal Ss. (14 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conversational comprehension processes are responsible for reasoning fallacies in children as well as adults: If is not the biconditional.

Proposes that children do poorly on reasoning from premises of the form if p then q not because they construe if as a biconditional but rather because they use discourse comprehension processes that lead them to accept the invited inferences if not p then not q and if q then p. This hypothesis predicts that children should respond appropriately to premises in which the invited inferences are countermanded. In Exp I, 24 undergraduates and 44 10-yr-olds were given conditional reasoning problems. Some of these had a major premise consisting of a single if–then sentence, while others had a more elaborate major premise in which the invited inferences were explicitly countermanded. In Exp II, Ss were 24 undergraduates, 20 10-yr-olds, and 34 7-yr-olds. In some problems the major premise consisted of a single if–then statement; in others, the major premise consisted of 3 such statements, 2 of which shared the same consequent, thus implicitly countermanding the invited inferences. In both experiments, all age groups committed the fallacies in the simple condition but not in the more complex condition. It is concluded that children's representation of if distinguishes necessary from merely invited inferences. Data suggest a collection of countermandable context-dependent inferences of varying degrees of invitingness associated with if. (19 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Memory and metamemory: A study of the feeling-of-knowing phenomenon in amnesic patients.

Tested accuracy of the feeling of knowing in 2 experiments, using 8 patients with Korsakoff's syndrome (mean age 54 yrs), 8 electroconvulsive shock therapy (ECT) patients (mean age 46.5 yrs), 4 Ss (mean age 47 yrs) with other causes of amnesia, 2 alcoholic control groups (7 Ss with a mean age of 47.6 yrs and 19 Ss with a mean age of 48.5 yrs), and 18 healthy controls (mean age 49 yrs). In Exp I, feeling-of-knowing accuracy for the answers to general information questions that could not be recalled was tested. Ss were asked to rank nonrecalled questions in terms of how likely they thought they would be to recognize the answers and were then given a recognition test for these items. Only Korsakoff's syndrome Ss were impaired in making feeling-of-knowing predictions. The other amnesic Ss were as accurate as control Ss in their feeling-of-knowing predictions. In Exp II, these findings were replicated in a sentence memory paradigm that tested newly learned information. Results show that impaired metamemory is not an obligatory feature of amnesia, because amnesia can occur without detectable metamemory deficits. The impaired metamemory exhibited by patients with Korsakoff's syndrome reflects a cognitive impairment that is not typically observed in other forms of amnesia. (50 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

"Development of the concept of truth-functional negation": Correction to Kim.

Reports an error in "Development of the concept of truth-functional negation" by Kyung Kim (Developmental Psychology, 1985[May], Vol 21[3], 462-472). In the article, several key words were omitted from the last sentence of the Method section on page 464, column 2, third paragraph. The corrected sentence is included in the erratum. (The following abstract of the original article appeared in record 1985-25108-001.) Studied the development of the concept of truth-functional negation in 2 experiments, using 36 English-speaking children (aged 3-6 yrs) and 10 Korean-speaking children (aged 4-5 yrs) as Ss. In Exp I, English-speaking Ss were given a sentence-variation task in which the following 4 sentence types were used to describe 36 pictures of common items: true affirmative, false affirmative, true negative (TN), and false negative. The results show that a majority of Ss under 5 yrs had difficulty with negative sentences, particularly TN sentences, indicating a lack of explicit understanding of truth-functional negation as defined in logic. In Exp II, a cross-linguistic replication of Exp I was attempted with Korean-speaking Ss. Despite some cross-linguistic differences in the negation system, the Korean-speaking Ss showed essentially the same pattern of results, suggesting that the development in question proceeds within the general limit set by the general cognitive development. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

How good is the evidence for a production deficiency among learning disabled students?

[Correction Notice: An erratum for this article was reported in Vol 77(6) of Journal of Educational Psychology (see record 2008-10974-001). Figures 1 and 2 (p. 557 and 559, respectively) are reversed. The captions are correct, but Figure 1 should be above the caption for Figure 2 and Figure 2 should be above the caption for Figure 1.] Investigated the spontaneous use of mnemonic strategies by learning disabled (LD) and non-LD children and adolescents to examine whether LD Ss can be distinguished from their non-LD peers on the basis of strategy use and recall. In Exp I, 105 LD and 105 non-LD 9–15 yr olds were administered a picture study/recall task, in which the strategies of interest were categorical organization during study and clustering during recall. In Exp II, 140 LD and 140 non-LD 11–17 yr olds were administered a paired-associate recall task, in which the strategy of interest was elaboration. In both studies, LD Ss earned lower mean recall scores than did the non-LD Ss. As a group, LD Ss did not differ from non-LD Ss in the use of categorical organization during study but showed less categorical clustering at recall. Fewer LD Ss used elaboration. Despite these differences, recall and strategy use were not useful predictors of classification as LD or non-LD and were only weak to moderate correlates of academic achievement. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

"How good is the evidence for a production deficiency among learning disabled students?": Correction to Shepherd et al.

Reports an error in "How good is the evidence for a production deficiency among learning disabled students" by Margaret J. Shepherd, Lynn M. Gelzheiser and Roberta A. Solar (Journal of Educational Psychology, 1985[Oct], Vol 77[5], 553-561). Figures 1 and 2 (p. 557 and 559, respectively) are reversed. The captions are correct, but Figure 1 should be above the caption for Figure 2 and Figure 2 should be above the caption for Figure 1. (The following abstract of the original article appeared in record 1986-14779-001.) Investigated the spontaneous use of mnemonic strategies by learning disabled (LD) and non-LD children and adolescents to examine whether LD Ss can be distinguished from their non-LD peers on the basis of strategy use and recall. In Exp I, 105 LD and 105 non-LD 9-15 yr olds were administered a picture study/recall task, in which the strategies of interest were categorical organization during study and clustering during recall. In Exp II, 140 LD and 140 non-LD 11-17 yr olds were administered a paired-associate recall task, in which the strategy of interest was elaboration. In both studies, LD Ss earned lower mean recall scores than did the non-LD Ss. As a group, LD Ss did not differ from non-LD Ss in the use of categorical organization during study but showed less categorical clustering at recall. Fewer LD Ss used elaboration. Despite these differences, recall and strategy use were not useful predictors of classification as LD or non-LD and were only weak to moderate correlates of academic achievement. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Memory for pictures and sounds: Independence of auditory and visual codes.

Examined the mnemonic independence of auditory and visual nonverbal stimuli (pictures, corresponding environmental sounds, or picture-sound pairs) in free recall. In Exp 1 with 169 undergraduates, free recall was tested under 3 learning conditions (standard intentional, intentional with a rehearsal-inhibiting distracter task, or incidental with the distracter task). In all groups, recall was best for the picture-sound items, and appeared to be additive relative to pictures or sounds alone when the distracter task was used. Exp 2 with 76 undergraduates included a group that saw 2 copies of the same picture simultaneously, and a group that saw 2 different pictures of the same concept. Recall in the picture-sound condition was greater than in either single-modality condition. Exp 3 with 24 undergraduates doubled exposure time, resulting in additively higher recall for repeated pictures with different exemplars. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Behavioral and hormonal responses to separation in infant rhesus monkeys and mothers.

Examined the effects of social stimuli on behavioral and physiological responses in 9 infant rhesus monkeys, 8 Ss at 4–6 mo (Exp I) and 7 of the original Ss and an additional S at age 8–10 mo (Exp II). Infants and mothers were removed from the social group and housed as dyads. Following this period, infants were removed and separated under 4 counterbalanced conditions: (a) totally isolated—placed in a holding cage for 24 hrs; (b) mother present, no contact—housed in a single cage in view of their mother, no contact; (c) mother present, contact—similar to above, with mother in proximity to the infant; and (d) peer present—separated but in proximity to a peer. In Exp I, infants rarely vocalized when totally isolated but showed high rates of vocalization in the presence of the mother, both with and without contact. In the mother-present conditions, they failed to show a plasma cortisol response. In contrast, totally isolated infants showed a significant elevation in plasma cortisol. In Exp II, these infants were separated for 3 days under 2 conditions: mother present and totally isolated. Results support and extend the findings of Exp I, indicating that age was not a factor in modulating response to separation. (20 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

An early and a late developing system for learning and retention in infant monkeys.

Separate groups of rhesus monkeys of different ages were tested in delayed nonmatching-to-sample and 24-hr concurrent discrimination-learning tasks considered to be measures of recognition memory and habit-formation systems, respectively, in an ontogenetic comparison of the development of these 2 systems. In Exp I, the visual-recognition abilities of 17 3-, 6-, or 12-mo-old Ss were measured, while 7 3-mo-old Ss were compared to adult controls on a discrimination-learning task in Exp II. Results show that infant Ss failed to learn the nonmatching task until they were approximately 4 mo old. With further maturation, learning ability gradually improved, but did not reach adult levels of proficiency even when Ss were 1 yr old. Postlearning evaluation with long delays and lists confirmed this slow ontogenetic development of recognition memory to adult levels of function. By contrast, 3–4 mo old Ss learned to discriminate long lists of object-pairs nearly as quickly as adults, despite 24-hr intertrial intervals. This striking dissociation in the ability of infants on the 2 tasks closely resembles the dissociation previously found in adults rendered amnesic by limbic lesions. Findings suggest that, whereas the nonlimbic habit system matures early in infancy, the limbic-dependent memory system develops more slowly. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)