由於資訊科技的發展，利用單行顯示裝置來呈現動態中文資訊的應用已非常廣泛。有關在單行顯示下閱讀動態中文文本之研究，應值得加以重視。為探究顯示方法如何影響閱讀績效，本論文以兩個實驗進行研究。
實驗一探討受試者在長文閱讀下，各種不同的顯示對閱讀效率與偏好的顯示速率之影響。本實驗調查4種顯示方式(前導式與快速序列視覺呈現兩種顯示樣式，分別在傳統與中文詞間插入空格兩種版面安排下顯示)與高低兩種不同文本困難度，對受試者閱讀效率與偏好的顯示速率之影響。結果顯示，增加詞間空格的前導式顯示方式，在閱讀效率與偏好的顯示速率上，都優於其他三種顯示方式。此外，低文本困難度在閱讀效率與偏好的顯示速率上，則高於高文本困難度。
實驗二探討顯示方式與顯示速率對受試者在閱讀短句時之適讀性與適用性效應。適讀性是以受試者閱讀後之正確回憶率加以衡量，而適用性則是以受試者閱讀時的主觀作業負荷和事後主觀偏好衡量。本實驗所調查之4種顯示方式與實驗一相同，3種顯示速率則分別為每分鐘120、240與500字。結果顯示，前導式的樣式在正確回憶率、主觀作業負荷與主觀偏好都顯著優於快速序列視覺呈現。並且，以詞為顯示單位之設計，顯著優於傳統以字為單位的版面安排方式。在每分鐘500字的顯示速率下，受試者的績效與偏好都顯著較低，特別是在傳統版面安排以快速序列視覺呈現的顯示下，受試者的績效更是明顯惡化。在主觀衡量上，大多數的受試者仍偏好傳統以字為顯示單位的設計，且偏好中等顯示速率。就適用性而言，單行顯示方式雖會妨礙閱讀績效，但仍適合用來顯示動態中文資訊。
本研究結果指出，動態中文文本在單行顯示時，以詞為顯示單位的前導式顯示，有較高的閱讀績效，文本困難度與顯示速率，對閱讀績效都有顯著影響，然而，大多數的受試者仍較偏好傳統以字為顯示單位的前導式設計，顯示受試者對新型的顯示方式之適應，仍有待克服。文中同時也討論了上述研究結果的可能原因與應用。

With advance in information technologies, reading dynamic Chinese texts from a single-line display has become a common experience. However, the studies for dynamic Chinese text presented on a single-line display were relatively rare. In the dissertation, two experiments were carried out to investigate the effects of presentation modes on reading performance.
Experiment 1 investigated the effects of presentation conditions on reading efficiency and preferable presentation speed. Four presentation modes in which two presentation formats (i.e. leading, and rapid serial visual presentation; RSVP) combined with two text layouts (i.e. convention and interword spacing) were investigated. Chinese texts with high- and low-difficulty were compared. The results showed that leading with interword spacing resulted in greater reading efficiency and faster preferable presentation speed than the other presentation modes. Reading efficiency and preferable presentation speed for low-difficulty text were significantly greater than high-difficulty text.
Experiment 2 investigated the effects of presentation mode and presentation speed on readability and usability. The four presentation modes used in experiment 1 and three presentation speed (i.e. 120-, 240- and 500-character-per-minute; CPM) were investigated. The results revealed that recall accuracy, subjective task load and satisfaction rating for leading format were better than RSVP format. Furthermore, the layouts that used Chinese words as presentation units were better than conventional layouts in which characters were the presentation units. Subjects’ performance deteriorated when presentation speed was at a high speed of 500-CPM, particularly for the mode of RSVP with conventional layout. For the subjective measures, most of the subjects preferred the design of conventional layout, and medium presentation speed. For the usability, the single-line display deteriorated reading performance. However, most of the subjects still considered that the single-line diplay was suitable for presenting dynamic Chinese text.
The results of the study indicated that when presenting dynamic Chinese text on a single-line display, the presentation mode of leading with interword spacing yielded better reading performance. The effects of text difficulty and presentation speed were significant on reading performance. However, most of the subjects preferred the design with the layout of conventional character unit. This indicated that the acceptance of novel presentation mode for readers remained to be concerned. The possible explanations and applications of the results are discussed in the present study.

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