1. Figure 1. The handshapes for letter Q and digit 6 from the Swedish manual alphabet and manual numeral systems.
From: Computerized Sign Language-Based Literacy Training for Deaf and Hard-of-Hearing Children
J Deaf Stud Deaf Educ. 2017;22(4): doi: /deafed/enx023
J Deaf Stud Deaf Educ | © The Author Published by Oxford University Press.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact

2. Figure 2. Omega-is-d2: Create
Figure 2. Omega-is-d2: Create. (A) Swedish word “stannar” (stops) selected by the user, (B) the Swedish Sign Language (SSL) equivalent for the Swedish word, (C) Swedish sentence, “Bilen stannar bakom trädet” (The car stops behind the tree), has been created by the user and the SSL equivalent of that sentence is presented on the screen, (D) finally the sentence appears as an animation, with the printed version of the sentence displayed below. Reproduced with permission from the actor and the licenser.
From: Computerized Sign Language-Based Literacy Training for Deaf and Hard-of-Hearing Children
J Deaf Stud Deaf Educ. 2017;22(4): doi: /deafed/enx023
J Deaf Stud Deaf Educ | © The Author Published by Oxford University Press.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact

3. Figure 3. Omega-is-d2: Test
Figure 3. Omega-is-d2: Test. (A) An animation is presented without any associated language material, (B) from a restricted set of words and phrases, the user creates a sentence that correctly describes the animation, (C) if the user creates a correct sentence, visual feedback is provided before a new animation appears, and otherwise a new animation is displayed directly after the response. Reproduced with permission from the licenser.
From: Computerized Sign Language-Based Literacy Training for Deaf and Hard-of-Hearing Children
J Deaf Stud Deaf Educ. 2017;22(4): doi: /deafed/enx023
J Deaf Stud Deaf Educ | © The Author Published by Oxford University Press.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact

4. Figure 4. Study design.
From: Computerized Sign Language-Based Literacy Training for Deaf and Hard-of-Hearing Children
J Deaf Stud Deaf Educ. 2017;22(4): doi: /deafed/enx023
J Deaf Stud Deaf Educ | © The Author Published by Oxford University Press.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact

5. Figure 5. Development in word reading index for Group 1 (Omega-is-d2 training followed by regular schoolwork; dotted line) and Group 2 (regular schoolwork followed by Omega-is-d2 training; solid line) during the cross-over period (Week 5–Week 16), and to the follow-up (Week 39).
From: Computerized Sign Language-Based Literacy Training for Deaf and Hard-of-Hearing Children
J Deaf Stud Deaf Educ. 2017;22(4): doi: /deafed/enx023
J Deaf Stud Deaf Educ | © The Author Published by Oxford University Press.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact

6. Figure 6. Development in reading comprehension index for Group 1 (Omega-is-d2 training followed by regular schoolwork) and Group 2 (regular schoolwork followed by Omega-is-d2 training) during the cross-over period (Week 5–Week 16), and to the follow-up (Week 39).
From: Computerized Sign Language-Based Literacy Training for Deaf and Hard-of-Hearing Children
J Deaf Stud Deaf Educ. 2017;22(4): doi: /deafed/enx023
J Deaf Stud Deaf Educ | © The Author Published by Oxford University Press.This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact