Hello, I need help with a GOMS-TLM model for taking a video using a cell phone where the user must zoom into the subject. You will start the model with the phone in a state where the camera is not activated. The camera app will also possibly be on a screen that is not the default screen. The video must be taken in a horizontal mode (see https://www.youtube.com/watch?v=Bt9zSfinwFA). Use the correct operators associated with Touch Level Model (TLM). You will use the notation associated with CPM-GOMS. You must cover all steps involved in going from taking the phone out of your pocket or purse to having a video file saved on the phone. Please use Cogulator (available at http://cogulator.io/) to create the model.
Be sure to include time estimates associated with each step and overall time in your analysis. This is important when you design interfaces, obviously if using an interface takes too long for tasks this can lead to some bad results. (for example if answering a phone takes longer than it rings you will miss every call!)
Also, do you have any suggestions to make this easier if it is something a user does frequently?
Please let me know if any questions.
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