جستجوی مقالات مرتبط با کلیدواژه « word processing » در نشریات گروه « پزشکی »

Neurolinguists are increasingly inclined to study the language behavior of patients with aphasia (PWAs) to discover more about the relationship between the brain and language.

This study investigated the production of synthetic and root compound nouns in the PWAs to discover how these lexemes were processed.

Using a confrontation naming task, four PWAs (two patients with Broca aphasia and two patients with transcortical motor aphasia) named 80 random black and white drawings of simple and compound nouns. They also repeated the nouns through an auditory repetition task. Compound nouns were of two root and synthetic types. Root nouns belonged to the noun-noun, and synthetic compounds belonged to the noun-verb category.

There was a significant difference between the affected components in naming and repetition of compound nouns. Moreover, there was a significant difference between naming and repetition of simple and compound nouns. There was no significant difference between naming and repetition of root and synthetic nouns.

PWAs process compound nouns through the dual-route model. They cannot retrieve the phonological forms of compound nouns, but they retain their knowledge of word-formation, indicating the modularity of linguistic ability. Morphological structure plays a role in word processing.

Word retrieval problems are among the limitations observed in children with specific language impairment during the initial schooling years. These restrictions are predictive of reading problems and poor performance at school. Additionally, studies on lexical access in Persian speaking children are scarce. Therefore, this study aimed to investigate and compare naming accuracy and latency in children with and without specific language impairment.

Twenty 7-9-year-old children with specific language impairment and 20 age-matched peers were recruited as the study participants. They were requested to name the 128 black and white line-drawing pictures from a Persian picture naming set for children, as rapidly as possible. We compared the effects of psycholinguistic variables on naming latency in the explored children with and without specific language impairment.

Linear mixed-effects modeling presented an interaction between the research groups and the psycholinguistic variables. Significant main effects were found for name agreement (P≤0.00) and the age of acquisition (P=0.05) in children with typical language development; significant effects for name agreement (P≤0.00) and log frequency (P≤0.00) were revealed in children with specific language impairment. 

The obtained models indicated that psycholinguistic factors could differently affect the naming latency in children with and without specific language impairment. Factors that may have accounted for the findings are discussed in this paper.

The lexical-level deficits are one of the hallmark limitations observed in early school-age children with specific language impairment. These problems are the predictors of reading problems and poor performance at school. Most studies in Persian-speaker children with specific language impairment have focused on syntax and morphology and the naming errors profile of these children are overlooked. This study aimed to investigate the naming accuracy, latency, and the error profile of these children. This was an observational study. Twenty children with specific language impairment were selected according to the clinical judgment of two speech therapists from speech therapy clinics and 100 children with typical language development aged from 7 to 9 years were randomly selected from public schools. The Persian picture naming set was presented by DMDX for the examination of picture naming skills. Naming errors were categorized as semantic, formal, mixed, non-word, unrelated, and others errors. Then, the data were investigated in terms of descriptive statistics and analysis of differences by the Independent t test and Mann-Whitney U test. The Persian-speaker children with specific language impairment name significantly slower and less accurate than the children compared to children with normal language development (P≤0.05). Although semantic errors were the most frequent errors in the two groups, the score differences of formal and omission errors were significant between the groups (P≤0.05). The different naming accuracy and latency scores between the two groups may be due to language delay and the inefficiency of the semantic system in children with specific language impairment. There are a variety of word retrieval errors in Persian-speaker children. Although, there are differences between the two groups, the error type in picture naming cannot be used for differentiating between them