Characteristics Of Task Switching Processing And Intervention Of Hearing-impaired Children

Hearing-impaired children due to its own hearing defect,there will be a narrow perception in the process of learning,the perceptual speed is slow,the information input is not complete,keep time short,inattention,language understanding ability is relatively poor,compared with the hearing children in psychological development,there are differences of more and more researchers begin to pay close attention to the deaf children's psychological problems.Among them,executive function has always been the focus of researchers,and task switching,as an important sub-component of executive function,plays an important role in individual learning,work and participation in social life.In simple terms,task switching is the transition from one cognitive processing task to another,and it can be said to be involved in every detail of our lives.For example,as a student,the most basic task in class is to take notes while listening to the lecture.Students need to switch back and forth between the two tasks of listening to the lecture and taking notes.Such a seemingly simple process includes task switching.Due to hearing loss,the development of executive function of hearing-impaired children will be affected to some extent,and their conversion and processing will also be affected.Therefore,it is necessary to study the characteristics of task switching of hearing-impaired children.In order to explore the characteristics of task switching in hearing-impaired children,three studies were designed: The first study is on the characteristics of dual-task switching for hearing-impaired children.The purpose of this study is to explore whether there are differences between hearing-impaired children and hearing children in dual-task switching,and to show that the switch costs of hearing-impaired children is greater than that of hearing children.The second study is on the characteristics of multi-task switching for hearing-impaired children.On the basis of the first study,the difficulty is added to further verify the differences between hearing-impaired children and hearing children in task switching and switch costs.The third study is the intervention study on the task switching ability of hearing impaired children,to explore whether arithmetic strategy training can improve the task switching ability of hearing impaired children.The first two adopted the taskclue paradigm,and explored the characteristics of task switching of hearing-impaired children through programming with E-prime software,and then conducted intervention training on their task switching ability through designing individual cases.Through the analysis and discussion of experimental results,the following conclusions are drawn:1.The processing ability of dual-task switching of hearing-impaired children is significantly lower than that of hearing children,and the switch costs of hearing-impaired children in the process of dual-task switching is significantly higher.2.The multi-task switching ability of hearing-impaired children is significantly lower than that of hearing children,and the switch costs generated in the process of multi-task switching is significantly higher than that of hearing children.3.Arithmetic strategy training can improve the task switching ability of hearing-impaired children.