Figure 1.
Writing style used by 27 volunteers. Uppercase letters (UC) and lower case letters (LC).
Figure 2.
Volunteer #23 writings with a spray paint can appeared to be more legible than the ones with a ballpoint pen (below).
Figure 3.
After the first sentence written on two lines, volunteer #21 adapted his handwriting to fit into the paper size for the following sentences.
Figure 4.
Volunteer #25 reduced the space between the words “vas” and “payer” and the final letters of the word “payer” to adapt to the available space. In sentences two and three, he directly adapted to the spatial constraint.
Figure 5.
All along the sessions, volunteer #9 used two lines to write one sentence, and started writing sentence two directly at the end of sentence one (left). Volunteer #27 always wrote the first sentence on two lines on the top left of the paper, the second on the top right and the third centered on the bottom of the paper (right).
Figure 6.
Participants #6 (top) and #11 (bottom) showed a right slant in their conventional handwriting and straightened up the writing when using a spray paint can.
Figure 7.
Volunteer #18 changed unnaturally his slant on the last sentence of the last session.
Figure 8.
Proportions concerning letters “h”, “p” and “y” have been obtained by calculating the ratio between y and x.
Figure 9.
Volunteer #7 changed the letter “h” and “n” from an arch to a garland form, when using a different writing instrument.
Figure 10.
Volunteer #9 form of the letter “L” became more angular on the spray paint writing.
Figure 11.
Volunteer #16 form of the letter “v” became more round on the spray paint writings.
Figure 12.
Several differences in shape were observed between the spray paint and conventional writing samples for volunteer #22.
Figure 13
Volunteer #10 preserved the final hook of the letter “y” used in conventional writing when writing with the spray paint can.
Figure 14.
When writing with the spray paint can, volunteer #6 added a terminal ornamental stroke on the letter “n”.
Figure 15.
Examples of incomplete letters “S” from volunteer #3, “t” from volunteer #4, and “e” from volunteer #10.
Figure 16.
Indistinguishable retouching on the letter “n” indicated by the arrow and observed on the video recording (volunteer #13).
Figure 17.
Visible retouching on the upper loop of the “S” (volunteer 3).
Figure 18.
Depending on the session, volunteer #7 either added or reduced connections resulting in a style change.
Figure 19.
Volunteer #2 decreased the number of connections when writing on the wall.
Figure 20.
Volunteer #6 increased the number of connections when writing on the wall.
Figure 21.
Volunteer #27 used a round dot in the spray can writings, and sometimes used a descending line in the conventional writing.