3. Results

Note that the raw data, data conversion protocols, calculations, and data analysis tables are available in the Appendices.

3.1. Task and Interface Design -- Performance Measures

For task performance, a 2x2 repeated measures ANOVA resulted in no statistically significant main effects and no statistically significant interaction at the 0.05 level (n = 20).

ANCOVAs (n=20) were run to control for variability that might be accounted for by time to completion and spatial visual ability, respectively. However, no statistically significant effects were found.

3.2. Immediate Subjective Satisfaction

For each of the four subjective satisfaction responses elicited immediately after each of the treatments, 2x2 repeated measures ANOVAs were run and the results summarized below. The questions are listed along with the descriptors associated with each Likert scale (1-9).

Interaction diagrams for the three statistically significant results from questions 1 (n=18) and 3 (n=18) are plotted below.

NOTE: For question 1 (above) the interface design (slide show vs. storyboard) was found to be statistically significantly different.

NOTE: For question 3 (above) both the Interaction design (slide show vs. storyboard) and the task type (gist determination vs. object recognition) were found to be statistically significantly different.

3.3. Overall User Satisfaction (Post-Test)

Subjects answered six subjective satisfaction questions (using a 1-9 Likert scale) for each interface design type (storyboard and slide show). Responses to each pair of questions were compared in paired sample t-Tests (n=34 for the first four and n=33 for the last two). All six were found statistically significant at the 0.01 level. The questions and a bar chart are show below.

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[ Abstract | Credits | 1. Introduction | 2. Experiment | 3. Results | 4. Discussion | 5. Conclusions | Acknowledgements | References | Appendices ]