Automatic Activation of Word Phonology from Print in Deep Dyslexia

1992 ◽  
Vol 45 (4) ◽  
pp. 575-608 ◽  
Author(s):  
Robert B. Katz ◽  
Susan M. Lanzoni

The performance of deep dyslexics in oral reading and other tasks suggests that they are poor at activating the phonology of words and non-words from printed stimuli. As the tasks ordinarily used to test deep dyslexics require controlled processing, it is possible that the phonology of printed words can be better activated on an automatic basis. This study investigated this possibility by testing a deep dyslexic patient on a lexical decision task with pairs of stimuli presented simultaneously. In Experiment 1, which used content words as stimuli, the deep dyslexic, like normal subjects, showed faster reaction times on trials with rhyming, similarly spelled stimuli (e.g. bribe-tribe) than on control trials (consisting of non-rhyming, dissimilarly spelled words), but slower reaction times on trials with non-rhyming, similarly spelled stimuli (e.g. couch-touch). When the experiment was repeated using function words as stimuli, the patient no longer showed a phonological effect. Therefore, the phonological activation of printed content words by deep dyslexics may be better than would be expected on the basis of their oral reading performance.

1987 ◽  
Vol 30 (3) ◽  
pp. 306-310 ◽  
Author(s):  
Michael P. Rastatter ◽  
Carl Dell

The present study was an attempt to investigate further the issues pertaining to cerebral organization for visual language processing in the stuttering population. Employing a lexical decision task, vocal reaction times were obtained for a group of 14 stutterers to unilateral, tachistoscopically presented concrete and abstract words. Results of an analysis of variance showed that a significant interaction occurred between visual fields and stimuli. Posthoc tests showed that the right hemisphere was superior for analyzing the concrete words while the left hemisphere was responsible for processing the abstract items. Compared to past data from normal subjects, these findings were interpreted as suggesting that some form of linguistic competition may exist between the two hemispheres, possibly reflecting a disturbance in functional localization in the stuttering population.


1989 ◽  
Vol 41 (1) ◽  
pp. 91-105 ◽  
Author(s):  
Derek Besner

A common assumption in the reading literature is that function words are often identified wholly or in part on the basis of outline shape and/or word-specific visual pattern. This assumption was examined in three perceptual identification experiments, a speeded oral reading experiment, and in a lexical decision task where the visual pattern of function words and control items (content words, non-words and control strings) was systematically distorted by Case Alternation. In all five experiments distortion failed to impair performance more on functors than on various control items. This result is argued to be inconsistent with the view that outline shape and word-specific visual pattern typically play a role in the identification of isolated function words. Shape distortion impaired function words less than controls in perceptual identification, but impaired function and content words equally in speeded naming and lexical decision. These contrasting effects of shape distortion are discussed in terms of a distinction between the uptake of information (lexical access) and phenomenal perception.


1984 ◽  
Vol 7 (1) ◽  
pp. 108-112 ◽  
Author(s):  
Barbara W. Gottlieb

The effect of social facilitation, particularly the impact of perceived evaluation and relative competence of handicapped learners, was tested to determine its efficacy in predicting 26 learning disabled children's oral reading performance. Two conditions reflected the competence variable: low relative competence and similar relative competence. The dependent measure was number of oral reading errors. Results revealed a significant main effect, indicating that children who read with similar-ability peers performed significantly better than when they read with peers of superior ability. Results are discussed in relation to mainstreaming decisions and homogeneous groupings of students for direct academic instruction.


2010 ◽  
Vol 41 (3) ◽  
pp. 131-136 ◽  
Author(s):  
Catharina Casper ◽  
Klaus Rothermund ◽  
Dirk Wentura

Processes involving an automatic activation of stereotypes in different contexts were investigated using a priming paradigm with the lexical decision task. The names of social categories were combined with background pictures of specific situations to yield a compound prime comprising category and context information. Significant category priming effects for stereotypic attributes (e.g., Bavarians – beer) emerged for fitting contexts (e.g., in combination with a picture of a marquee) but not for nonfitting contexts (e.g., in combination with a picture of a shop). Findings indicate that social stereotypes are organized as specific mental schemas that are triggered by a combination of category and context information.


2017 ◽  
Vol 43 (7) ◽  
pp. 1008-1019 ◽  
Author(s):  
Carolien Van Damme ◽  
Eliane Deschrijver ◽  
Eline Van Geert ◽  
Vera Hoorens

We tested the prediction, derived from the hubris hypothesis, that bragging might serve as a verbal provocation and thus enhance aggression. Experiments 1 and 2 were vignette studies where participants could express hypothetical aggression; Experiment 3 was an actual decision task where participants could make aggressive and/or prosocial choices. Observers disliked an explicit braggart (who claimed to be “better than others”) or a competence braggart as compared with an implicit braggart (who claimed to be “good”) or a warmth braggart, respectively. Showing that explicit and competence bragging function as verbal provocations, observers responded more aggressively to the explicit and competence braggart than to the implicit and warmth braggart, respectively. They did so because they inferred that an explicit and a competence braggart viewed other people and them negatively, and therefore disliked the braggart. Rather than praising the self, braggarts are sometimes viewed as insulting others.


2015 ◽  
Vol 10 (2) ◽  
pp. 165-185 ◽  
Author(s):  
Esther Hanssen ◽  
Arina Banga ◽  
Anneke Neijt ◽  
Robert Schreuder

In Dutch, the linking element en in compounds is often homophonous with the regular plural suffix -en. Both are pronounced as [ә], [әn] or [ṇ] in different regions of the Netherlands. As a consequence, speakers of standard Dutch may interpret linking en in spoken compounds as a plural marker. The present study investigates whether the regional origin of the participants affects their interpretation of regional speech variants of linking en. In an auditory decision task, speakers from four regions decided if a compound was singular or plural. While all critical compounds required the singular response, reaction times were delayed when the compound contained a linking en: All speech variants of en produced interference for speakers from four regions of the Netherlands. Region North showed the greatest interference compared to the Middle region. Also, region Northeast revealed larger interference effects for linking [ә] and region South for linking [ṇ]. We conclude that a speaker’s regional origin affects interpretation.


1993 ◽  
Vol 76 (3_suppl) ◽  
pp. 1147-1152 ◽  
Author(s):  
Lee W. Ellis ◽  
Joan N. Kaderavek ◽  
Michael P. Rastatter

The purpose of this study was to evaluate the usefulness and validity of magnitude-estimation scaling as an alternative to a traditional, somewhat more cumbersome reaction-time procedure in the assessment of hemispheric processing asymmetry. Lexical decision vocal reaction times and magnitude-estimation scaling values were obtained for 16 normal subjects to tachistoscopically presented concrete and abstract words. Analysis of variance showed identical interactions of field x stimuli for each dependent variable while all pair-wise correlations between these measures were significant. Magnitude-estimation scaling may be a sensitive measure of visual psychophysical differences in hemispheric processing and may circumvent problems with variance of latencies associated with disordered populations.


2007 ◽  
Vol 60 (1) ◽  
pp. 51 ◽  
Author(s):  
Katherine Booker ◽  
Michael C. Bowyer ◽  
Chris J. Lennard ◽  
Clovia I. Holdsworth ◽  
Adam McCluskey

Molecularly imprinted polymers (MIPs) were generated for trans-aconitic acid 1 and cocaine 2 in a variety of porogens (CH3CN, CHCl3, [bmim][BF4], and [bmim][PF6]). MIP synthesis in either [bmim][BF4] or [bmim][PF6] resulted in significant acceleration of polymerization rates and, in the case of low temperature polymerizations, reactions were complete in less than 2 h, while no product was observed in the corresponding volatile organic carbon (VOC) porogen. In all instances, MIPs generated in [bmim][BF4] or [bmim][PF6] returned imprinting selectivities (I values) on par with or better than the corresponding MIP generated in VOCs. Imprinting values ranged between I = 1 and 2.9, with rebinding limited to 1 h. MIP synthesis conducted at low temperature (5°C) afforded the highest I values. Scanning electron microscopy examination of MIP morphology highlighted an unexpected template effect with MIP structure varying between discrete nanoparticles and robust monoliths. This template–monomer interaction was also observed in the rates of polymerizations with differences noted in reaction times for 1 and 2 MIPs, thus providing indirect conformation of our previously proposed use of molecular modelling–nuclear magnetic resonance titrations (the MM-NMR method) in the design phase of MIP generation. In addition, considerable batch-to-batch rebinding selectivities were observed.


1984 ◽  
Vol 7 (1) ◽  
pp. 39-44 ◽  
Author(s):  
Terry L. Rose ◽  
Lee Sherry

An alternating-treatments design was used to investigate the relative effects of two oral reading previewing procedures: (a) silent: the student reads silently the assigned reading passage prior to reading it aloud, and (b) listening: the teacher reads the assigned selection aloud with the student following along silently prior to the student reading the passage aloud. Five junior-high school learning disabled students, four boys and one girl, participated in the study. In four of five cases results showed that systematic prepractice procedures were related to higher performance levels than was baseline (no prepractice). Differential effects were noted: the listening procedure was related to higher rates of words read correctly than was the silent procedure. The findings are discussed in terms of their implications for research and instructional procedures, especially as these relate to adolescent learners.


1978 ◽  
Vol 14 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Richard L Allington

Sign in / Sign up

Export Citation Format

Share Document