اختلال گفتمانی

Recursive structures, structures whose representation is produced by the repeated application of a syntactic rule, have been observed and investigated extensively in languages. By means of an experiment, the present study investigates the acquisition of recursive locatives in Persian-speaking children and provides new evidence on the subject of children's learning path, which lends its support to theoretical insights about the representation of this structure in the mind. Different languages do not uniformly deem recursive structures well-formed. Furthermore, in languages that consider the same recursive structure well-formed, it is possible for the acquisition age of this same structure to be different in children speaking different languages. Experiments report differences in the age that English and Japanese speakers acquire recursive locatives. In these studies, early acquisition of locative structures that employ identical prepositions is observed, as well as early acquisition in the language that marks the recursive structure by an overt functional element, namely, Japanese. Explaining these observations, Nakato and Roeper (2021) propose a three-step path in the acquisition of recursion: 1. Search for overt morphological elements 2. Search for overt lexical elements 3. The ability to interpret recursive structures without the presence of identical overt elements. In the recursive structure of the locatives of Persian, similar to Japanese and contrary to English, we witness an overt functional element: Ezafe. The presence of Ezafe in this structure qualifies as the first stage of the proposed acquisition path, and therefore it is predicted that the acquisition of recursive locatives in Persian will occur early. This article takes advantage of the presence of the overt element in Persian recursive locatives and by designing and implementing an experiment in accordance with the previous experiments, investigates the acquisition of locative recursion among Persian-speaking children and by means of the collected data examines the proposed acquisition path above.

Based on clinical observations, it has been determined that damage to the right hemisphere may cause some communication disorders. These non-aphasic communication disorders lead to impairments in the pragmatic, prosodic, lexical-semantic and discourse aspects of language that affect social participation. In right hemisphere damaged patients (RHD), discourse may be affected at both the perceptual and expressive levels. Right hemisphere damage can affect language-related skills. The present study aimed to investigate discourse disorder in adults with right hemisphere brain damage through the processing of relative clauses. The research is descriptive-analytical and quantitative. The statistical population included 10 healthy adults and 10 Persian-speaking adults with right hemisphere damage, who were selected in a convenience sampling way. The research tests included screening tests and tests for measuring the processing speed of relative constructions, which were done through DMDX software. Data analysis was done by the statistical methods such as variance analysis, independent t-test of two independent groups, and paired sample t-test. In subject relative constructions, the difference in processing speed of categories, relative clauses and relative sentences between the two experimental and control groups was not significant (P>0.05); However, in the object relative constructions, this difference in processing speed between the two experimental and control groups was significant (P<0.05). In subject and object constructions preceded by an initial context, the difference in processing speed of categories, clauses and sentences between the two experimental and control groups was significant (P<0.05). In the experimental group, the difference in processing speed of subject and object relative clauses and sentences with and without an initial context was significant (P<0.05). The research findings provide evidence for the negative effect of right hemisphere brain damage on discourse skills. Likewise, people with right hemisphere brain damage have more difficulty in processing complex language constructions referential items such as relative constructions compared to healthy peers.