Better UX
UCD2012 workshop led by Caroline Jarrett
Many thanks to the
organisers, volunteers, and sponsors of UCD
2012, London
Supporters




Sponsors                    Organiser




                                              2   2
Surveys: your views on these statements
A. “It‟s when someone says, "Can't I just send out a survey
   and collect the data?" that I start to shake”.
  –   Indi Young
      http://rosenfeldmedia.com/books/mental-models/blog/oxymoron_scientific_survey/




B. Online surveys are a great option for business owners
   who would like to conduct their own research
  –   Smart Survey
      http://www.smart-survey.co.uk/articles/10-advantages-of-online-surveys/




                                                                                       3
Better UX surveys could be…
1. Improved questionnaires
2. Surveys that ask about user experience in a better way
3. Surveys that deliver more helpful insights for UX design




                                                            4
    © Caroline Jarrett and Effortmark Ltd
Three ways UX people encounter surveys
    1. Post-test / post-task surveys e.g. SUS
    2. Someone is going to do a survey anyway
    3. Triangulating between survey data
       and data from elsewhere




                                                5
Image credit: infodesign.com.au
Agenda   1. Post-test / post-task surveys
         2. Someone is going to do a survey
            anyway
         3. Triangulating between survey data
            and data from elsewhere




                                                6
Presser et al 2004: pretesting focuses on
a “broader concern for improving data quality
so that measurements meet
a survey‟s objective”
                                                                   Field testing
                                                                 focuses on the
                                                                 mechanics and
                                                                   procedures


                                                                                        Cognitive
                                                     Usability
                                                                                      interviewing
                                                      testing
                                                                                       focuses on
                                                    focuses on
                                                                                           the
                                                    interaction
                                                                                        questions


http://www.slideshare.net/cjforms/introduction-to-usability-testing-for-survey-research
Try some cognitive interviewing
• Pair up. One person gets to be the interviewer.
• Non-interviewer: wait for your instruction.




                                                    8
Try some cognitive interviewing
• Pair up. One person gets to be the interviewer.
• Non-interviewer: wait for your instruction.
• Interviewer: ask your pair to think aloud while answering
  this question. Take notes.


„How many windows are there
in your house?‟


(Dillman et al, 2009)                                     9
OK, now swap and try this question
• Please think about a computer system or web site that
  you used recently. Now think aloud as you answer this
  question:




                                                          10
OK, now swap and try this question
 • Please think about a computer system or web site that
   you used recently. Now think aloud as you answer this
   question:




                                                           11
(from the SUS, the System Usability Scale, Brooke 1986)
Ask questions that
Tip   people can answer




                 ?
                           12
We‟ve got a lot of different goals to consider

                       What the
                     organisation
                    wants to achieve




        Our aims in                    What the user
       doing a survey                   wants to do

                                                       13
Let‟s start here




        Our aims in
       doing a survey

                        14
We use post-test questionnaires
for comparisons
• One iteration with another
• Products with each other
• This product with an ideal




         Our aims in
        doing a survey

                                  15
Tullis and Stetson found that SUS
  was the best questionnaire for comparisons




Tullis, T. S. and J. N. Stetson (2004).
A Comparison of Questionnaires for Assessing Website Usability. UPA 2004 Conference     16
http://www.upassoc.org/usability_resources/conference/2004/UPA-2004-TullisStetson.pdf
The ideal: everything in balance




                                     Good
   Comparisons                     questions




                                               17
Agenda   1. Post-test / post-task surveys
         2. Someone is going to do a survey
            anyway
         3. Triangulating between survey data
            and data from elsewhere




                                                18
Survey = questionnaire + process




                   © Caroline Jarrett and Effortmark Ltd   19
A sadly uninformative “survey” process


                                             Notice
“Voice of the
                                             big gap
 customer”




  Some               Send         Reward or
                  after each      punish staff         Insight
questions
                 transaction


                                                           20
Ask a sample, not everyone
Tip


 Make me
 feel special



                                         21
A typical survey process, somewhat better




“Let‟s do
a survey”




  Some
                Send
                 and            Add luck       Insight
questions
                hope

                                                   22
Probably best to be realistic
and bring in the boss here

                       What the
                     organisation
                    wants to achieve




        Our aims in                    What the user
       doing a survey                   wants to do

                                                       23
A better survey process


               Goals          Users              Build           Deploy          Analyse
            • Establish    • Interview       • Final version   • Run the       • Extract
“Let‟s do     your goals     users about       of questions      survey from     useful ideas
a survey”     for the        the topics in   • Build the         approach to   • Share with
              survey         your survey       questionnaire     follow-up       others




            Questions      Questions
  Some
             you need      users can         Questionnaire        Data           Insight
questions
            answers to      answer


                                                                                      24
We‟ve seen this bit a few moments ago


               Goals          Users              Build           Deploy          Analyse
            • Establish    • Interview       • Final version   • Run the       • Extract
“Let‟s do     your goals     users about       of questions      survey from     useful ideas
a survey”     for the        the topics in   • Build the         approach to   • Share with
              survey         your survey       questionnaire     follow-up       others




            Questions      Questions
  Some
             you need      users can         Questionnaire        Data           Insight
questions
            answers to      answer


                                                                                      25
The questions you need depend on your
   organisational and UX goals


               Goals          Users              Build           Deploy          Analyse
            • Establish    • Interview       • Final version   • Run the       • Extract
“Let‟s do     your goals     users about       of questions      survey from     useful ideas
a survey”     for the        the topics in   • Build the         approach to   • Share with
              survey         your survey       questionnaire     follow-up       others




            Questions      Questions
  Some
             you need      users can         Questionnaire        Data           Insight
questions
            answers to      answer


                                                                                      26
Goals come into the definition of usability

The extent to which a product
can be used by specified users
to achieve specified goals with
effectiveness, efficiency and satisfaction
in a specified context of use
(ISO 9241:11 1998)                    This assumes
                                      that we agree
                                      on the goals



                                                      27
We have lots of views ways of defining
user experience




                                         28
But let‟s carry on with the standards theme
2.15 user experience
person's perceptions and responses resulting from the use
and/or anticipated use of a product, system or service
NOTE 1 User experience includes all the users' emotions, beliefs, preferences, perceptions, physical
and psychological responses, behaviours and accomplishments that occur before, during and after
use.
NOTE 2 User experience is a consequence of brand image, presentation, functionality, system
performance, interactive behaviour and assistive capabilities of the interactive system, the user's
internal and physical state resulting from prior experiences, attitudes, skills and personality, and the
context of use.
NOTE 3 Usability, when interpreted from the perspective of the users' personal goals, can include the
kind of perceptual and emotional aspects typically associated with user experience. Usability criteria
can be used to assess aspects of user experience.



ISO 9241-210                                                                                               29
Before ISO 9241-210 came along…
user experience as the satisfaction bit of usability

The extent to which a product
can be used by specified users
to achieve specified goals with
effectiveness, efficiency and satisfaction
in a specified context of use
(ISO 9241:11 1998)


                                  Can I choose
                                  the goals?
                                                 30
Find out about users‟ goals
Tip




                                31
Agenda   1. Post-test / post-task surveys
         2. Someone is going to do a survey
            anyway
         3. Triangulating between survey data
            and data from elsewhere




                                                32
I think this question is trying
to ask about satisfaction




                                  33
If you‟re going to ask about satisfaction,
what endpoints would you use on a scale?



               A              Z
Workshop participants came up with these –
mostly about recalled emotion
             Satisfied    Dissatisfied
   Extremely satisfied    Extremely dissatisfied
                 Love     Hate
           Interesting    Boring
                  Fun     Dull
            Enjoyable     Unpleasant
   Made me feel good      Made me feel bad
                Easy      Confusing
                Enjoy     Not enjoy
                                                     Workshop
            Delighted     Disappointed              results
             Friendly     Scary
                                                                35
And these, mostly about whether the
experience was successful or not
                      Fast  Slow
                 Effortless  Painful
I could do what I came to do  I couldn‟t do what I came to do
                  Success  Failure
                Rewarding  Frustrating




                                                   Workshop
                                                    results

                                                                  36
And these,
about predictions of future behaviour
       Would come back  Wouldn‟t come back
       Would post kudos  Would post complaints




                                            Workshop
                                             results

                                                       37
Here are some scales I thought of,
 ahead of the workshop



     Disappointed              Thrilled

Something missing              Something extra

        Miserable              Happy

        Below par              Above par

            Unfair             Privilege    38
But maybe the same level of satisfaction
 generates different points on each scale



     Disappointed              Thrilled

Something missing              Something extra

        Miserable              Happy

        Below par              Above par

            Unfair             Privilege    39
Satisfaction reflects different emotions
     depending on level of engagement

                                                                      Satisfaction here
                                        Engaged                       = “delight”



             Negative               Emotion                Positive




                                      Indifferent
                                                                      Satisfaction here
                                                                      = “pleasant”
Adapted from Oliver, R. L. (1996)
“Satisfaction: A Behavioral Perspective on the Consumer”
Interview first
Tip




                        41
Satisfaction requires comparison
of an experience to something else
Compared experience to what?
(nothing)
Expectations
Needs
Excellence (the ideal product)
Fairness
Events that might have been




Adapted from Oliver, R. L. (1996)
“Satisfaction: A Behavioral Perspective on the Consumer”
                                                           42
And the resulting thoughts differ accordingly
Compared experience to what?               Resulting thoughts
(nothing)                                  Indifference
Expectations                               Better / worse / different
Needs                                      Met / not met / mixture
Excellence (the ideal product)             Good / poor quality (or „good enough‟)
Fairness                                   Treated equitably / inequitably
Events that might have been                Vindication / regret




Adapted from Oliver, R. L. (1996)
“Satisfaction: A Behavioral Perspective on the Consumer”
                                                                               43
Example: bronze medal winners tend
to be happier than silver medal winners




 Nathan Twaddle, Olympic Bronze Medal Winner in Beijing

 Matsumoto D, & Willingham B (2006). The thrill of victory and the
 agony of defeat: spontaneous expressions of medal winners of the
                                                                                                  44
 2004 Athens Olympic Games.
                                                          Photo credit: peter.cipollone, Flickr
Not all experiences are equal

                            Winning an          Major life event
                            Olympic medal


                           Watching an event    Occasional,
                           from the 2012        salient
                           Olympics on TV


                           Watching the TV      Unremarkable,
                           news on a slow day   repetitive
                                                                   45
News images from cnn.com
The approximate curve of forgetting
          High



                                              Major life event

Quality
of data
          Low




                    Unremarkable,
                    repetitive                Occasional, salient

                 Recent               Long ago
                                                                    46
                           Time since event
Ask about recent vivid
Tip   experience




                                   47
      Image credit: Fraser Smith
Agenda   1. Post-test / post-task surveys
         2. Someone is going to do a survey
            anyway
         3. Triangulating between survey data
            and data from elsewhere




                                                48
Memorable experiences are also complex
• Think about the experience of
  attending this conference
   – What did you expect to happen?
   – What did you need to happen?
   – What would the ideal experience have been?
   – How did you expect to be treated
     compared to other people at the event?
   – If you hadn‟t come here, what else might have happened?




                                                               49
The exercise revealed quite a few different
perspectives on the conference
• These questions were quite easy:
  participants had thought about these topics
   – What did you expect to happen?
   – What did you need to happen?
   – What would the ideal experience have been?
• These questions were harder,
  but gave fresh perspectives
   – How did you expect to be treated
     compared to other people at the event?
                                                  Workshop
   – If you hadn‟t come here,
                                                   results
     what else might have happened?


                                                             50
The challenge of UX and surveys:
which bit to measure?

The extent to which a product
can be used by specified users
to achieve specified goals with
effectiveness, efficiency and satisfaction
in a specified context of use
(ISO 9241:11 1998)



                                             ?
The challenge of satisfaction surveys:
which bit to measure?
Compared experience to what?     Resulting thoughts
(nothing)                        Indifference
Expectations                     Better / worse / different
Needs                            Met / not met / mixture
Excellence (the ideal product)   Good / poor quality (or „good enough‟)
Fairness                         Treated equitably / inequitably
Events that might have been      Vindication / regret




                                                   ??
The challenge of experience surveys:
which bit to measure?
• Think about an experience …
   – What did you expect to happen?
   – What did you need to happen?
   – What would the ideal experience have been?
   – How did you expect to be treated
     compared to other people at the event?
   – If you hadn‟t come here, what else might have happened?




                                                    ???
Don‟t try to ask everything
Tip




                                                                         54
      http://www.census.gov/history/www/genealogy/decennial_census_records/
A quick, interesting question is fine




    “Why did you come to
      this web site today?”


Suggestion from Suzanne Boyd, Anthro-Tech   55
But whatever you do,
have a BIG BOX for the context




                                 56
Bonus
Tip     Successful

        Survey = Questionnaire

                + Process

             That involves
             lots of testing
                               57
Tips   1. Ask questions that people can answer
       2. Ask a sample, not everyone
       3. Find out about users‟ goals
       4. Interview first
       5. Ask about recent, vivid experience
       6. Don‟t try to ask everything
       7. Build lots of testing into
          your survey process



                                                 58
Caroline Jarrett
Twitter @cjforms
http://www.slideshare.net/cjforms
carolinej@effortmark.co.uk




                                    59
More resources on
http://www.slideshare.net/cjforms




                                    60

Better UX Surveys at UCD2012 by @cjforms

  • 1.
    Better UX UCD2012 workshopled by Caroline Jarrett
  • 2.
    Many thanks tothe organisers, volunteers, and sponsors of UCD 2012, London Supporters Sponsors Organiser 2 2
  • 3.
    Surveys: your viewson these statements A. “It‟s when someone says, "Can't I just send out a survey and collect the data?" that I start to shake”. – Indi Young http://rosenfeldmedia.com/books/mental-models/blog/oxymoron_scientific_survey/ B. Online surveys are a great option for business owners who would like to conduct their own research – Smart Survey http://www.smart-survey.co.uk/articles/10-advantages-of-online-surveys/ 3
  • 4.
    Better UX surveyscould be… 1. Improved questionnaires 2. Surveys that ask about user experience in a better way 3. Surveys that deliver more helpful insights for UX design 4 © Caroline Jarrett and Effortmark Ltd
  • 5.
    Three ways UXpeople encounter surveys 1. Post-test / post-task surveys e.g. SUS 2. Someone is going to do a survey anyway 3. Triangulating between survey data and data from elsewhere 5 Image credit: infodesign.com.au
  • 6.
    Agenda 1. Post-test / post-task surveys 2. Someone is going to do a survey anyway 3. Triangulating between survey data and data from elsewhere 6
  • 7.
    Presser et al2004: pretesting focuses on a “broader concern for improving data quality so that measurements meet a survey‟s objective” Field testing focuses on the mechanics and procedures Cognitive Usability interviewing testing focuses on focuses on the interaction questions http://www.slideshare.net/cjforms/introduction-to-usability-testing-for-survey-research
  • 8.
    Try some cognitiveinterviewing • Pair up. One person gets to be the interviewer. • Non-interviewer: wait for your instruction. 8
  • 9.
    Try some cognitiveinterviewing • Pair up. One person gets to be the interviewer. • Non-interviewer: wait for your instruction. • Interviewer: ask your pair to think aloud while answering this question. Take notes. „How many windows are there in your house?‟ (Dillman et al, 2009) 9
  • 10.
    OK, now swapand try this question • Please think about a computer system or web site that you used recently. Now think aloud as you answer this question: 10
  • 11.
    OK, now swapand try this question • Please think about a computer system or web site that you used recently. Now think aloud as you answer this question: 11 (from the SUS, the System Usability Scale, Brooke 1986)
  • 12.
    Ask questions that Tip people can answer ? 12
  • 13.
    We‟ve got alot of different goals to consider What the organisation wants to achieve Our aims in What the user doing a survey wants to do 13
  • 14.
    Let‟s start here Our aims in doing a survey 14
  • 15.
    We use post-testquestionnaires for comparisons • One iteration with another • Products with each other • This product with an ideal Our aims in doing a survey 15
  • 16.
    Tullis and Stetsonfound that SUS was the best questionnaire for comparisons Tullis, T. S. and J. N. Stetson (2004). A Comparison of Questionnaires for Assessing Website Usability. UPA 2004 Conference 16 http://www.upassoc.org/usability_resources/conference/2004/UPA-2004-TullisStetson.pdf
  • 17.
    The ideal: everythingin balance Good Comparisons questions 17
  • 18.
    Agenda 1. Post-test / post-task surveys 2. Someone is going to do a survey anyway 3. Triangulating between survey data and data from elsewhere 18
  • 19.
    Survey = questionnaire+ process © Caroline Jarrett and Effortmark Ltd 19
  • 20.
    A sadly uninformative“survey” process Notice “Voice of the big gap customer” Some Send Reward or after each punish staff Insight questions transaction 20
  • 21.
    Ask a sample,not everyone Tip Make me feel special 21
  • 22.
    A typical surveyprocess, somewhat better “Let‟s do a survey” Some Send and Add luck Insight questions hope 22
  • 23.
    Probably best tobe realistic and bring in the boss here What the organisation wants to achieve Our aims in What the user doing a survey wants to do 23
  • 24.
    A better surveyprocess Goals Users Build Deploy Analyse • Establish • Interview • Final version • Run the • Extract “Let‟s do your goals users about of questions survey from useful ideas a survey” for the the topics in • Build the approach to • Share with survey your survey questionnaire follow-up others Questions Questions Some you need users can Questionnaire Data Insight questions answers to answer 24
  • 25.
    We‟ve seen thisbit a few moments ago Goals Users Build Deploy Analyse • Establish • Interview • Final version • Run the • Extract “Let‟s do your goals users about of questions survey from useful ideas a survey” for the the topics in • Build the approach to • Share with survey your survey questionnaire follow-up others Questions Questions Some you need users can Questionnaire Data Insight questions answers to answer 25
  • 26.
    The questions youneed depend on your organisational and UX goals Goals Users Build Deploy Analyse • Establish • Interview • Final version • Run the • Extract “Let‟s do your goals users about of questions survey from useful ideas a survey” for the the topics in • Build the approach to • Share with survey your survey questionnaire follow-up others Questions Questions Some you need users can Questionnaire Data Insight questions answers to answer 26
  • 27.
    Goals come intothe definition of usability The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use (ISO 9241:11 1998) This assumes that we agree on the goals 27
  • 28.
    We have lotsof views ways of defining user experience 28
  • 29.
    But let‟s carryon with the standards theme 2.15 user experience person's perceptions and responses resulting from the use and/or anticipated use of a product, system or service NOTE 1 User experience includes all the users' emotions, beliefs, preferences, perceptions, physical and psychological responses, behaviours and accomplishments that occur before, during and after use. NOTE 2 User experience is a consequence of brand image, presentation, functionality, system performance, interactive behaviour and assistive capabilities of the interactive system, the user's internal and physical state resulting from prior experiences, attitudes, skills and personality, and the context of use. NOTE 3 Usability, when interpreted from the perspective of the users' personal goals, can include the kind of perceptual and emotional aspects typically associated with user experience. Usability criteria can be used to assess aspects of user experience. ISO 9241-210 29
  • 30.
    Before ISO 9241-210came along… user experience as the satisfaction bit of usability The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use (ISO 9241:11 1998) Can I choose the goals? 30
  • 31.
    Find out aboutusers‟ goals Tip 31
  • 32.
    Agenda 1. Post-test / post-task surveys 2. Someone is going to do a survey anyway 3. Triangulating between survey data and data from elsewhere 32
  • 33.
    I think thisquestion is trying to ask about satisfaction 33
  • 34.
    If you‟re goingto ask about satisfaction, what endpoints would you use on a scale? A Z
  • 35.
    Workshop participants cameup with these – mostly about recalled emotion Satisfied  Dissatisfied Extremely satisfied  Extremely dissatisfied Love  Hate Interesting  Boring Fun  Dull Enjoyable  Unpleasant Made me feel good  Made me feel bad Easy  Confusing Enjoy  Not enjoy Workshop Delighted  Disappointed results Friendly  Scary 35
  • 36.
    And these, mostlyabout whether the experience was successful or not Fast  Slow Effortless  Painful I could do what I came to do  I couldn‟t do what I came to do Success  Failure Rewarding  Frustrating Workshop results 36
  • 37.
    And these, about predictionsof future behaviour Would come back  Wouldn‟t come back Would post kudos  Would post complaints Workshop results 37
  • 38.
    Here are somescales I thought of, ahead of the workshop Disappointed Thrilled Something missing Something extra Miserable Happy Below par Above par Unfair Privilege 38
  • 39.
    But maybe thesame level of satisfaction generates different points on each scale Disappointed Thrilled Something missing Something extra Miserable Happy Below par Above par Unfair Privilege 39
  • 40.
    Satisfaction reflects differentemotions depending on level of engagement Satisfaction here Engaged = “delight” Negative Emotion Positive Indifferent Satisfaction here = “pleasant” Adapted from Oliver, R. L. (1996) “Satisfaction: A Behavioral Perspective on the Consumer”
  • 41.
  • 42.
    Satisfaction requires comparison ofan experience to something else Compared experience to what? (nothing) Expectations Needs Excellence (the ideal product) Fairness Events that might have been Adapted from Oliver, R. L. (1996) “Satisfaction: A Behavioral Perspective on the Consumer” 42
  • 43.
    And the resultingthoughts differ accordingly Compared experience to what? Resulting thoughts (nothing) Indifference Expectations Better / worse / different Needs Met / not met / mixture Excellence (the ideal product) Good / poor quality (or „good enough‟) Fairness Treated equitably / inequitably Events that might have been Vindication / regret Adapted from Oliver, R. L. (1996) “Satisfaction: A Behavioral Perspective on the Consumer” 43
  • 44.
    Example: bronze medalwinners tend to be happier than silver medal winners Nathan Twaddle, Olympic Bronze Medal Winner in Beijing Matsumoto D, & Willingham B (2006). The thrill of victory and the agony of defeat: spontaneous expressions of medal winners of the 44 2004 Athens Olympic Games. Photo credit: peter.cipollone, Flickr
  • 45.
    Not all experiencesare equal Winning an Major life event Olympic medal Watching an event Occasional, from the 2012 salient Olympics on TV Watching the TV Unremarkable, news on a slow day repetitive 45 News images from cnn.com
  • 46.
    The approximate curveof forgetting High Major life event Quality of data Low Unremarkable, repetitive Occasional, salient Recent Long ago 46 Time since event
  • 47.
    Ask about recentvivid Tip experience 47 Image credit: Fraser Smith
  • 48.
    Agenda 1. Post-test / post-task surveys 2. Someone is going to do a survey anyway 3. Triangulating between survey data and data from elsewhere 48
  • 49.
    Memorable experiences arealso complex • Think about the experience of attending this conference – What did you expect to happen? – What did you need to happen? – What would the ideal experience have been? – How did you expect to be treated compared to other people at the event? – If you hadn‟t come here, what else might have happened? 49
  • 50.
    The exercise revealedquite a few different perspectives on the conference • These questions were quite easy: participants had thought about these topics – What did you expect to happen? – What did you need to happen? – What would the ideal experience have been? • These questions were harder, but gave fresh perspectives – How did you expect to be treated compared to other people at the event? Workshop – If you hadn‟t come here, results what else might have happened? 50
  • 51.
    The challenge ofUX and surveys: which bit to measure? The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency and satisfaction in a specified context of use (ISO 9241:11 1998) ?
  • 52.
    The challenge ofsatisfaction surveys: which bit to measure? Compared experience to what? Resulting thoughts (nothing) Indifference Expectations Better / worse / different Needs Met / not met / mixture Excellence (the ideal product) Good / poor quality (or „good enough‟) Fairness Treated equitably / inequitably Events that might have been Vindication / regret ??
  • 53.
    The challenge ofexperience surveys: which bit to measure? • Think about an experience … – What did you expect to happen? – What did you need to happen? – What would the ideal experience have been? – How did you expect to be treated compared to other people at the event? – If you hadn‟t come here, what else might have happened? ???
  • 54.
    Don‟t try toask everything Tip 54 http://www.census.gov/history/www/genealogy/decennial_census_records/
  • 55.
    A quick, interestingquestion is fine “Why did you come to this web site today?” Suggestion from Suzanne Boyd, Anthro-Tech 55
  • 56.
    But whatever youdo, have a BIG BOX for the context 56
  • 57.
    Bonus Tip Successful Survey = Questionnaire + Process That involves lots of testing 57
  • 58.
    Tips 1. Ask questions that people can answer 2. Ask a sample, not everyone 3. Find out about users‟ goals 4. Interview first 5. Ask about recent, vivid experience 6. Don‟t try to ask everything 7. Build lots of testing into your survey process 58
  • 59.
  • 60.