幼児の言語情報認知の右耳優位性に注意配分教示が及ぼす影響

抄録

Using a dichotic listening test, the effects of attention on the right-ear-advantage (REA) for word recognition in 4-6 year children was analyzed. In Experiment 1, ear differences for word recognition was measured under free recall condition. The results showed REA in all year groups and suggested that the degree of left hemisphere advantage for word recognition did not change over 4-6 year group. In Experiment 2, ear differences during attentional condition was measured with the same children as Exp. 1. Attention was manipulated by requiring children to report from left or right ear first. In 4-5 year group, REA was obtained in both left- and right-ear-first conditions, but REA was not obtained in left-ear-first condition in 5-6 year group. These suggested the difference of attentional effects on REA between two year groups. In Experiment 3, ear differences during both left- and right-ear-first conditions was re-examined, six months later, with 4-5 year group. The results showed that REA was obtained in right-ear-first condition, but ear difference was not observed in left-ear -first condition. These findings suggested the possible effects of attention on the dichotic REA for word recognition even in preschool children.