When the full study began, each participant performed the experiment under supervision of an instructor. The session began with a brief introduction and purpose of the study, followed by a 10-min familiarization time with Google G1 mobile device. The real G1 mobile device allows users to touch the screen and select the desired function. Similar to this, participants use the mouse to perform the selected movement by clicking on the screen. Once it was determined that participants were fully aware of the procedures,they were read the following information