Figure 9

Graphical interface of the text length marking program - Experiment 2. The program required the experiment subjects to mark (using keyboard or mouse) a text fragment of the same length as the test text. The test texts were presented in the initial screen of the program (top panel). Selection was done on the selection screen (bottom panel). The users can switch between the two screens to allow corrections and calibration, but cannot see both texts at the same time. As in Experiment 1, visual clues making the purely graphical comparisons of shape and size were used. To prohibit simple content matching two different languages were used: Polish (mother language of the testers) for the test length and the ‘lorem ipsum’ Latin template for the markup texts. The lengths of the marked fragments denoted as corresponding length were gathered in a set of $\{L_C\}$ for each tester and for each test length $L_T$.