Luz Cary

Does awareness of speech as a sequence of phones arise spontaneously

It was found that illiterate adults could neither delete nor add a phone at the beginning of a non-word; but these tasks were rather easily performed by people with similar environment and childhood experiences, who learned to read rudimentarily as adults. Awareness of speech as a sequence of phones is thus not attained spontaneously in the course of general cognitive growth, but demands some specific training, which, for most persons, is probably provided by learning to read in the alphabetic system.

Literacy training and speech segmentation

Abstract New groups of illiterate and ex-illiterate adults, comparable to those of Morais et. al (1979), were given a battery of tasks designed to assess the specificity of the effect of literacy training on speech segmentation. As in the previous study, a strong difference was observed between the two groups on the task of deleting the initial consonant of an utterance. The illeterates displayed the same incapacity to deal with phonetic segments in a detection task and in a progressive free segmentation task. Their performance was better, although still inferior to that of ex-illiterates, on both deletion and detection when the critical unit was a syllable rather than a consonant, as well as in a task of rhyme detection. No significant difference was observed in a task of melody segmentation, on which both groups performed poorly. The high specificity of the differences in performance level implies that they cannot result to an important extent from differences in general ability or motivation between the two groups of subjects. They rather mean that while sensitivity to rhyme and analysis into syllables can develop up to some point in the absence of the experience normally provided by reading instruction, analysis into phonetic segments requires that experience. Finally, in a picture memory task, the illiterates showed a phonological similarity effect, which is consistent with other results suggesting that the use of phonological codes for short-term retention does not require explicit phonetic analysis.

Illiteracy and brain damage—1. Aphasia testing in culturally contrasted populations (control subjects)

One hundred neurologically healthy adults were tested for their pointing (choosing one of four or six line drawings as the match to an auditorily presented linguistic stimulus), naming (from line drawings), and repetition abilities. All subjects were unilingual adult right-handers. Fifty-seven subjects were totally unschooled illiterates and 43 were fluent readers. Statistically significant differences were found to exist between the scores of the illiterate and literate subpopulations across all tasks. With the focus being placed on these cultural differences, the discussion bears on: (a) the interaction between linguistic and iconographic factors in certain types of naming and pointing tasks currently used in clinical and research aphasiology, (b) some of the linguistic parameters which are apparently at stake in repetition behavior, and (c) the circumstances in which aphasiological research dealing with groups of patients cannot yield reliable data without reference to neurologically healthy controls. It is argued that, when testing brain-damaged patients of different cultural backgrounds, one runs the risk of over- or underestimating the frequency of aphasia if one does not refer to norms which explicitly take educational level into account.

Differences in Reading Acquisition Development in Two Shallow Orthographies: Portuguese and Spanish.

The present study examines the role of the relative transparency of Portuguese and Spanish orthographies in schoolchildren’s word recognition procedures. Both Portuguese and Spanish may be considered as transparent orthographies. However, mappings at the grapheme–phoneme level are more consistent in Spanish than in Portuguese. Four groups of Portuguese and Spanish children from grades 1, 2, 3, and 4, who had been taught to read using a phonics-based approach, were given a Portuguese and a Spanish version of three different continuous reading tasks: numeral reading, number word reading, and pseudoword reading. Reading time per item was measured and errors noted. Improvement in reading time was observed in both orthographies from grades 1 to 4. There were no errors in numeral recognition and few children made errors in reading the number words. In pseudoword reading, the Spanish children were faster and made fewer errors than the Portuguese children. Errors in pseudoword reading were scored as phonological when leading to the production of another pseudoword and as lexical when involving refusals and/or the production of a real word. Portuguese children made more phonological errors than the Spanish group, and there was no difference in the number of lexical errors. The results are discussed in terms of the role played by the differing orthographic transparency of Spanish and Portuguese in young readers’ word recognition procedures.

Syllabic segmentation and literacy

Abstract A total of 40 unschooled Portuguese adults, either illiterates or ex-illiterates, were presented auditorily with short sentences and asked to detect the occurrence of a word initiated by a specified syllable-sized target. The target was either CV or CVC, and the target-bearing word was initiated by either a CV or a CVC syllable. The dependent variable was the number of correct detections. Ex-illiterates performed better than illiterates. There was a significant interaction between target type and word structure: Detections were more numerous when the target coincided with the first syllable of the target-bearing word than when it did not. This effect is similar to the one obtained by Mehler, Dommergues, Frauenfelder, and Segui (1981) in a reaction-time study with French literate subjects, and shows evidence of a syllabification procedure. The fact that this syllable effect is obtained with illiterate subjects, regardless of their overall performance, suggests that the development of a syllabifica...

Awareness of Words as Phonological Entities: The Role of Literacy.

Illiterate, unschooled adults were tested on their notions of word length. Experiment 1 showed that only about half of them performed very poorly on a task requiring the production of a long/short word. They were clearly inferior to formerly illiterate, unschooled adults. The illiterate group also broke up neatly into two subgroups, one performing perfectly or very well, the other failing completely or almost completely, when required to match the written and the oral form of long/short words. Similarly, Experiment 2 showed that about half of the illiterates were unable to choose the longest of two names when presented with drawings of objects. The results suggest that learning to read, though not strictly necessary, plays a decisive role in the development of the ability of many individuals to focus on phonological length.

Is there a critical period for the acquisition of segmental analysis

Abstract Twelve Portuguese illiterate adults were required to delete the initial consonant of a spoken pseudoword and were provided with both explicit instructions and continuous corrective feedback. Nine of them displayed rapid improvements in performance. This suggests that there is no critical period for acquiring the ability of segmental analysis of speech.

Finding Parts within Figures: A Developmental Study

Preschool children, primary school children, and unschooled adults were tested on the part-probe task designed by Palmer. Relatively high scores were obtained with all groups on parts which had a ‘good’ relationship with the figure. However, the ability to find more deeply embedded segments was not present in the preschool children or in the unschooled adults. This indicates that the processes of postperceptual analysis necessary to find a part in a figure are neither built-in nor the consequence of mere cognitive growth, but depend on the instruction or experience usually provided in school. Such processes should not be confused with those that lead to form perception. Inspection of the part–figure pairs and of the corresponding detection scores suggests the importance of several stimulus properties.

Postural determinants of frontal-position advantage in listening to speech

Previous work has shown that when a subject is seated with body, head, and eyes oriented in the same direction, speech coming from the front is better perceived than speech coming from other directions. The question asked was which segments of the body are critical in determining the advantage of the frontal position. It was found that the effect does not depend exclusively on the orientation of the head relative to the source, since the advantage is reduced not only when the head is deviated laterally towards a competing source, but also when the gaze or the trunk and the limbs are deviated in that direction. Frontal position advantage is thus not a purely acoustical or auditory phenomenon, but depends, at least partly, on interactions at deeper levels.

Promoting phonemic analysis ability among kindergartners

Two longitudinal studies following the design used by Lundberg et als (1988) aimed at examining the effects of different metaphonological training programs on phonemic analysis ability acquisition among kindergartners (mean age: 5 years 5 months in both studies). In Study 1, two training programs involving either rhymes, syllables and phonemes, or rhymes and syllables only, were administered to different groups. Progress in phonemic analysis ability was exclusively observed in the group whose training included phonemes. An untrained control group displayed no progress in metaphonological ability. In Study 2, two training programs involving either phonemes or syllables were administered to different groups. A third group was trained on non-linguistic visual analysis. Specific effects of training on phonemic analysis ability were disclosed again. While a phoneme-to-supraphoneme generalization was found among the group trained with phonemes, the reverse did not happen among the group trained with syllables. These results support the idea that processes involved in syllabic analysis of speech or in rhyme manipulation cannot be applied to its phonemic structure. In addition, training with non-linguistic visual analysis did not entail any progress in metaphonological ability, thus providing evidence that phonological awareness cannot be promoted by analysis abilities acquired in another domain.