Your first
assignment will give you an opportunity to do modeling of user tasks. You will
need to identify 3 functions in some program like Winzip or the Acrobat Reader.
You will need to identify situations in which the functions work well and
situations in which they work poorly.
For each of the
functions, build Keystroke Level Models for one situation in which the function
works well and one situation in which the function works poorly. Estimate the
execution time (including mental operators) for each model. Determine the
actual execution times for 3 users to complete each of the 6 situations.
Write GOMS models that
unify the “works well” and “works poorly” for each of the 3 functions. You
should then calculate the estimated times required to execute each function.
Compare the estimated execution times for the GOMS models and the keystroke
models.
The write-up for
this assignment is due 2 weeks from Thursday. Your write-up for this assignment
should include: the models, assumptions, task scenarios, calculations, relevant
data displays, and your conclusions.
Assigned: 1/17/08
Date due: 1/31/08