Development of attention networks in deaf children: support for the integrative hypothesis

Early auditory deprivation is known to affect visual attention, yet the early effects of auditory deprivation on visual attention cannot be described simply as deficiencies or enhancements, because selected aspects of visual attention could be modified in various ways along the developmental trajectory. However, few studies have explored the development of these various aspects of visual attention in deaf children. In this paper we study the developmental trajectory of three aspects of visual attention (alerting, orienting and executive control attention networks) in a group of deaf children between 6 and 12 years of age. We used the attention network test to explore the development of the three attention networks and a child-friendly version of the cost-benefit paradigm to characterize the development of the basic operations of orienting. Our results showed a pattern of specific but varied outcomes with respect to the effects of auditory deprivation on these attention networks. First, auditory deprivation can impair development of the alerting network. Second, auditory deprivation can enhance two elementary operations of orienting: moving and engaging. Third, the executive control network showed a developmental trajectory that was neither deficient nor enhanced, but rather similar to that observed with hearing children. Taken together, these results are consistent with the integrative hypothesis of the effects of auditory deprivation on visual attention.