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Maths for designers
and design researchers;
or, an inquiry into the
application of
quantitative thinking
for the visually inclined.
Ben Kraal · 17 March 2021
Maths
for Designers
and design researchers
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“Is this significant?”
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Most people, most
of the time, don’t
encounter
research in their
daily work.
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Our stakeholders
have trouble
trusting design
research.
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But which
numbers?
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1. Why stakeholders like numbers
2. What are good numbers
3. An example of using “good” numbers
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Why do our
stakeholders like
numbers?
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A measured
performance.
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The industrial
revolution was also
an institutional
revolution.
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Beer and statistics.
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Randomness
at scale
is predictable.
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What are “good” numbers?
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Good numbers
measure what they
say they do.
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Oh, hey NPS.
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Academics
sometimes make it
harder than
necessary to
understand their
numbers.
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Good numbers
have a benchmark.
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Good Numbers
Easy to administer;
Easy to analyse
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The
Single Ease
Question
Very
difficult
Very
easy
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How easy or difficult was this task?
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User
Experience
Questionnaire
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Attractiveness Perspicuity Efficiency Dependability Stimulation Novelty
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An example with
our old friend the
System Usability
Scale.
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A scenario:
Usability of
Electronic Health
Record Systems
in UK EDs
(Bloom et al, 2021)
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Comparing results
to the benchmark.
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The “good” line.
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The power is in
your hands.
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Give stakeholders
numbers.
Carefully.
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Numbers need
explaining.
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Iterate and
measure again.
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Designers and design
researchers can use
maths and numbers to
make space for, and
build trust in, the
stories they want to
tell.
Ben Kraal · 17 March 2021
Maths
for Designers
and design researchers
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Colophon The design of this
presentation is heavily
inspired by Robin Rendle’s
fantastic “Newsletters”
essay.