本研究主要目的在探討PDA與其他閱讀媒體和版面安排對閱讀/搜尋績效及視覺疲勞的影響性，其中閱讀媒體除PDA外另針對電腦和平面文件進行探討，閱讀實驗的版面內容安排則分為文章篇幅與字體大小兩部分，搜尋實驗的版面內容安排則分為目標物種類與字體大小兩部分，並針對受試者的性別、閱讀習慣進行分析，探討這些變項之影響。本研究以60位東海大學工業工程與經營資訊系學生為受試樣本，分作各為30人的兩組個別進行閱讀實驗與搜尋實驗。至於視覺疲勞度的衡量係採用閃光融合閾值之測試及主觀評量表來進行評估，並以主觀評量的結果做主成分分析。最後，根據實驗結果以SPSS統計軟體進行統計分析，透過變異數分析、DUNCAN事後分析等得到下列六項主要結果： 1.在短篇幅文章的閱讀作業績效分析上達顯著水準，以平面媒體和PDA較佳；在長篇幅文章的閱讀作業績效分析上同樣達顯著水準，以平面媒體最佳。 2.字體大小在長篇幅文章達顯著水準，在短篇幅文章差異不顯著。 3.在閱讀實驗中閱讀習慣除了在短篇幅文章的錯誤次數未達顯著水準外，其餘項目皆達顯著水準，且有閱讀習慣者績效優於無閱讀習慣者。 4.在媒體搜尋績效方面皆達顯著水準，且以平面媒體和電腦較佳；在字體大小方面也達顯著水準，完成時間方面較大的字體較快，錯誤率方面較小的字體較正確。 5.視覺疲勞之閃光融合閾值測試方面，雖然CFF變化量結果在三種媒體中尚未達顯著水準，但以平面媒體較其他媒體的平均變化量大。 6.視覺疲勞之主觀評量方面，男性和女性在認知上差別較大。 The research mainly studied about the influence of reading and searching performance / visual fatigue among PDA、Computer and Paper Document. The variables of layout on printed page in reading experiment are article capacity and word size；The variables of layout on printed page in searching experiment are types of objectives and word size. Individual variables such as gender and reading habits are also analsized. Both methods of experiment and questionnaire are taken and 30-30 two groups of students study in Tunghai University are the samples for reading and searching experiments respectively. The measurement of visual fatigue are evaluated by variations of critical flicker fusion （CFF）, subjective assessment. The points of subjective assessment are analyzed by principal component analysis. Finally, the analysis of data was processed with SPSS package software. ANOVA, Duncan’s multiple-range test and cross effects of second-order have been used in this study. The following 6 conclusions were made. 1. For effect on reading performance of shorter article, the difference of media is significant. Paper document and PDA are better; Result is the same significant on longer article, paper document is better. 2. For effect on word size of longer article, the difference is significant. 3. For effect on reading habit, besides the number of errors on shorter article, the other terms are all significant. 4. For effect on searching performance, the difference of media and word size are all significant. Bigger size is faster, and smaller size is more correct. 5. For effect on variations of critical flicker fusion frequency（CFF）, although the result among three media isn’t significant, the variation of paper document is bigger than other media. 6. For the effect on subjective assessment of visual fatigue, the cognitions between male and female are very different.
