Appendix 1 :
Instructions to Subjects
A.1 Description of the Experiment
The following description should be read to each subject at
the beginning of the experiment. Italicized text are instructions
to the experimenter.
Before you begin, you should have a worksheet available for
the subject. You should also have the interface up and running,
with the Qwerty layout selected. No other windows should be
visible. Also, assign subjects a subject number. Assume this one
is Subject B02-13-3.
Introduce yourself. Give them the consent form to sign, on
their worksheet. If it is not signed, do not proceed.
- My name is _________, and I will be giving you
instructions on what to do and will answer your
You're helping us by trying out a new
product in the early development stages. We have several
different versions of this product, and we're looking to
see which version is the easiest to use. If you have
trouble with some of the tasks, its the product's fault,
not yours. Don't feel bad; that's exactly what we are
looking for. Remember, we are testing the product
versions, not you.
Tell the participant that it's OK to quit at any time.
- Although I don't know of any reason for this to happen,
if you should become uncomfortable or find this test
objectionable in any way, you are free to quit at any
Tell them about the experiment, and record the subject id.
- Our team is working on a computer that does not have a
keyboard. Because text entry may be occasionally
required, we plan to put a simulated keyboard on the
screen, such as the one you see in front of you, through
which people can "mouse type". Show them the
screen. The keyboard includes only lower case letters
and a space bar. There are no numbers or backspace key.
Anything you type appears on this one line entry.
"mouse-type" by selecting a key on the screen.
For example, I will type your subject identification,
which is "subject b two thirteen three". Notice
that I have to press this button on the upper corner
before it will let me type.
Press the "Press here to begin" button and
mouse-type "subject three four".
- When I am done, I press this button to tell the system I
Press the "Press here when done" button.
Point to the screen
- The purpose of this experiment is to study people's
ability to "mouse-type" using a variety of
different keyboard layouts. The keyboard layouts we will
use are as follows. This layout is called a Qwerty
keyboard, and is the same layout usually found on
typewriters and computers.
Select the Phone Pad layout.
- This layout is called a phone pad keyboard. Notice that
the letters are arranged as they are on your telephone.
I'll type the word 'test' on it to show you how it works.
Start typing. You type a letter by pressing and
cycling through each letter on a key until the correct
letter appears. To accept the next character, you have to
press the '>' key. To type a space, you have to press
the '>' twice.
Leave a space and show that the letters s an z require
4, not 3 button presses. Also notice that the 'prs'
button includes the letter 'q', while the 'wxy' button
includes the letter 'z'.
Select the Alphabetic layout.
- This layout is called an alphabetic keyboard. Notice that
the letters are arranged in alphabetic order. I'll type
tye word test on it to show you how it works.
Note: Don't tell subjects about the possible advantages or
disadvantages of each method!
Administer the pre-test questionairre on the worksheet. Write
down the answers as they are supplied!.
- Before we begin the typing task, I would like you to
answer a few questions found on this form.
A.2 Specific task instructions
Don't forget to record any comments on the workheet.
- For all typing tasks, I am going to ask you to type as
fast as you can. However, I want you to avoid typing
errors. If you do make an occasional mistake, just keep
on going... there is no backspace key!. If you make many
errors, then you are probably trying too hard and you
should slow down a bit.
Task 1: Measure their touch typing ability. Set it up to
the qwerty keyboard
- We will begin by measuring your actual typing speed using
the physical keyboard.
Give them the paragraph.
- Please read the following paragraph aloud. When you are
ready to begin, I will press this button and tell you to
begin typing. When you are done, tell me and I will press
the button again. Any questions?
- Now lets do it again with the next paragraph. Ask them
to read it aloud, and repeat the previous step.
Task 2, 3 and 4: Measure their mouse typing ability with
various keyboards. Note that the order you run these experiments
in will be assigned by your TA! For illustration, assume the
order is Phone and Alphabetic. Change the layout to the Phone
- Now we will see how fast you can mouse-type on the phone
keyboard. As before, you should type as fast as you can
while still avoiding typing errors. This time, you will
be pressing the button at the beginning and end. Read the
first sentence aloud, and start whenever you are ready.
This sentence is for practice.
Note: Subjects may forget to press the button starting and
ending the experiment. Remind them!
Give them the 2nd sentence
- Now do the same with this sentence. We will be recording
your typing time and erros, so go as quickly as you can
and try to keep your typing errors down.
Read the sentence aloud and start whenever you are ready.
Give them the 3rd sentence
- Now here is the last sentence with this keyboard. Read it
aloud and start when ready.
Let them type it.
- Good. What do you think about mouse-typing with this
Record their comments on the worksheet
Switch keyboards, and repeat the above procedure for the
alphabetic keyboard. Use the same sentences in the same order of
- I'll switch to the next keyboard.....
Adminster post-test questionairre on the worksheet
- Now that you have used all keyboards, can you rank order
them from best to worst? Do you have any other comments
Record the results. You may want to ask other questions on
oddities that you may have observed.
At this point, the experiment is complete. You can answer
any questions that the subject may have. Thank them. Finally,
record your own observations of what you saw that were not
captured by subject's comments.