As the majority of special needs and early learning software only requires mouse movement and a left button click it makes sense to have a single button mouse to control it. This mouse has proved ideal for young children and for people with learning disabilities as it avoids the confusing of two buttons and eliminates to problems caused by right clicking and the bringing up of confusing menus.
When the user is ready to move on to full mouse operation they can find that a mouse with coloured buttons helps them to remember which button to click.
Smaller sized mice can be easier for some users and can be a better fit for children’s hands.
Wireless mice make the mouse easier to position to suit the user, as it is not restricted by cable length.