高校初年次生と大学生の説明文理解に及ぼす標識化効果の境界条件

抄録

We examined the hypothesis that the effect of signaling on students' prose comprehension is significant only when structure strategies are deficient during production. Participants included first-year high school students (N = 120, mean age 16.0) and university students (N = 120, mean age 20.8). Students' tendencies to use structure strategies were evaluated and classified as lower-structure (LS) or upper-structure (US) strategy using the median (23 high school students and 25 university students). Participants performed sentence arrangement, recall, and reconstruction tasks. Each task consisted of expository sentences with or without signaling. The results indicated the following: (a) Signaling facilitated structure identification in organizational processes in the US strategy group of high school students, which improved their prose comprehension, whereas no effects were evident in the LS strategy group. (b) An identical effect was seen in the LS strategy group of university students, whereas it was not observed in the US strategy group. These results support our hypothesis. The boundary conditions for the effect of signaling on students' prose comprehension are discussed from the perspective of the production deficiency in structure strategy.