Background and Aim: Recently, researchers have increasingly turned to study the relation between stuttering and syntactic complexity. This study investigates the effect of syntactic complexity on the amount of speech dysfluency in stuttering Persian-speaking children and adults in conversational speech. The obtained results can pave the way to a better understanding of stuttering in children and adults, and finding more appropriate treatments.
Methods: In this cross-sectional study, the participants were 15 stuttering adult Persian-speakers, older than 15 years, and 15 stuttering child Persian-speakers of 4-6 years of age. In this study, first a 30 minute sample of the spontaneous speech of the participants was provided. Then the utterances of each person were studied in respect to the amount of dysfluency and syntactic complexity. The obtained information was analyzed using paired samples t-test.
Results: In both groups of stuttering children and adults, there was a significant difference between the amount of dysfluency of simple and complex sentences (p<0.05).
Conclusion: The results of this study showed that an increase in syntactic complexity in conversational speech, increased the amount of dysfluency in stuttering children and adults. Moreover, as a result of increase of syntactic complexity, dysfluency had a greater increase in stuttering children than stuttering adults.

Background and Aim: Families who have a child with hearing deficiency deal with different challenges, and mothers have a greater responsibility towards these children because of their traditional role of caregiver so, they deal with more psychological problems. The aim of this study was to compare the psychological well-being and coping styles in mothers of deaf and normal children.
Methods: In this cross-sectional and post event study (causal-comparative method), 30 mothers of deaf students and 30 mothers of normal students from elementary schools of Ardabil, Iran, were selected using available sampling. The Ryff psychological well-being (1989) and Billings and Moos coping styles (1981) questionnaires were used in this study. The data were analyzed using MANOVA test.
Results: We found that in mother&aposs of deaf children, psychological well-being and its components was significantly lower than mothers of normal children (p<0.01 and p<0.05, respectively). There was a significant difference between two groups in terms of cognitive coping style, too (p<0.01). However, mothers of deaf children used less cognitive coping style.
Conclusions: It seems that child&aposs hearing loss affects on mothers psychological well-being and coping styles this effect can be visible as psychological problems and lower use of adaptive coping styles.