Additionally, the results of the interaction are visible during the interaction, not after it as in the cascading menus. The user can perceive the changing bar widths as the position of the slider changes, so the effects perceived by the user are more immediate and the sign is more interactive. Now the process of changing bar widths involves an indexical sign, in the form of the slider. This immediately frees the user to determine the width of the bars in a more hands on fashion - as they adjust the slider, the bars widen or become narrower.
After the usability study, the cascading menus were replaced by adjusting a slider in the dialogue box in figure 6. This change appears visually to the user, who may then decide that the width has decreased by an adequate amount, or they may decide to decrease again or to change back to the size it was before. It is indexical because once the user has cascaded through the menu and selected the decrease option this causes a decrease in the width of the bars. The symbolic sign requires them to experiment and learn by trial and error how to perform their task using this sign. in this example) because it must be learned.
0 kommentar(er)
