学齢に適したVDTテキストリーディングのための画面構成とその認知特性

本研究は、人間の視覚認知特性のための基礎的研究として、VDT作業において重要な意味を持つ人間が見やすい画面構成、適正な文字の大きさが学齢によって違うことを検証し、併せて学校などにおける情報教育のための基礎的な研究として、学齢発達段階ごとの見やすいと感じる画面条件の違いを比較する実験を行った。すなわち小学生・中学生・高校生・大学生を被験者として、画面構成条件の違いに応じた、VDTに適した文字サイズと画面構成条件を調べた。その結果を統計分析した結果、小学生から大学生まで多学年にわたる、学齢別の至適文字サイズの特性曲線を導出した。そして子供が見やすいと感じる文字と画面の条件を求める学年別比較を通して、学齢別のVDT視認特性について考察した。

The primary objective of the study was to determine the optical screen configuration for the first-year junior high school students studying the fundamentals of information science and technology. A study of easy-to-write screen configurations to be used when reading Japanese text in VDT was one of the most important factors for the fundamentals of information science and technology class. I studied the reading performance of first-year junior high school students as they write textbooks while VDT conditions such as font size, screen brightness, text and background color were altered. I also compared the performance of first-year junior high school students with the results of university students. The results were as follows: 1) the opitical screen configuration for first-year junior high school students were somewhat different than that for university students'. 2) the optical letter size for first-year junior high school students was determined to be 18points which was larger than that what was required for the adults to be 14points, 3) ideally each students should be able to adjust his or her own screen configuration in order to meet their individual needs. However, if default screen conditions for writing were to be used in first-year junior high school classrooms, the optical background color was white, the text black, the brightness-contrast high, the letter style Minchotai, with continuous sentences in a 18 font.