development of the use of lexical cohesive devices in the persian-speaking children

in this study an adaptation of halliday and hasan's (1976) description of cohesion in english was applied to the spoken narratives of typical developing children. regarding the development in grammatical cohesion, narrations of 3 groups of children 4;00 to 7;00 years of age, 5 in each age group, were analyzed and compared with each other. this research applies an experimental method.to evaluate their abilities in discourse organization through the use of lexical cohesive devices, two tests were performed, story retelling and story production using two different story-books. the results of the research showed a development in lexical cohesion between these age groups over time.