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Mental Models

Aligning design strategy with human behavior

Mental Models

By Indi Young. Rosenfeld Media, February 2008.
ISBNs: paperback (1-933820-06-3); digital editions (1-933820-19-5)

Mental Models

There is no single methodology for creating the perfect product—but you can increase your odds. One of the best ways is to understand users' reasons for doing things. Mental Models gives you the tools to help you grasp, and design for, those reasons. Adaptive Path co-founder Indi Young has written a roll-up-your-sleeves book for designers, managers, and anyone else interested in making design strategic, and successful.

"Indi Young's mental models are the perfect way for your team to integrate your user's perspective into your design. Indi has written a comprehensive guide for anyone who wants to make use of this power design technique. I'll be giving this book out to all of our important clients and insisting they make it part of their process."
—Jared Spool, CEO & Founding Principal, User Interface Engineering

Mental Models is available in full-color paperback and 4 digital versions (screen-optimized and printer-optimized PDF, MOBI, and ePub). Substantial supplemental content is available on this site, and all of the book's images can be downloaded from Flickr.

“Mental Models” Blog

Picking Out Guiding Principles

Picking out an actual "guiding principle" (something that guides how I make a decision) from a transcript is difficult. There is so much "brush" we need to clear away before we can see the "specimen trees" for what they are. Here is a perfect example. It's a page from an architecture firm's web brochure. The page is titled "Our philosophy." http://www.philippetimmerman.com/ (You have to click "Philosophy" in the navigation to get to this page.)

Philippe Timmerman Architecture - the firm's philosophy.

I'll take it apart line by line.

  1. "Philippe Timmerman Architectural Designs [the company] is as much about an aesthetic attitude as it is about architecture and design. It is about defining and creating a ..." This is an explanation/description of the company's position in the market.
  2. "... personal lifeworld that bears the watermark of an individual style." This is a philosophy, "Watermark every person's lifeworld with their individual
    style.
    " I'm not entirely sure I understood that right--I don't know what a lifeworld is. Nevertheless, it is how they make decisions about watermarking their designs.
  3. "Which is why in every design, every concept, every search for an object or
    work of art, we strive to recreate that original sense of harmony that resonates
    through everything we are accustomed to calling 'beautiful'." This is an
    explanation of their process, but you could pull a behavior out of it thus:
    "Recreate a sense of beauty, harmony in each design, concept, and search." It describes each employee's intent they create their designs.
  4. "This relentless commitment to purity of design implies a similarly
    meticulous attention to detail." This is a paragraph joiner--something that
    references the first paragraph and introduces the new subject.
  5. "We believe that details are more than mere parts but reflections of the
    whole: the majesty and splendor of an entire palace is contained within a single
    door handle." This is a philosophy, "Believe details (door handle) are
    reflections of the whole (palace).
    "
  6. "A concept that permeates every corner and every layer of the design and
    finishing is not a superficial luxury but the natural outcome of a constancy to
    purpose and a consistency of perspective." This is also an explanation of
    their process and a reassurance that the company is constant and consistent. You
    might be tempted to pull "be constant and consistent" out as a guiding
    principle, but that's not how this is written. The intent it to reassure the
    potential client that the company is serious.
  7. "At [the company], everything begins with the notion of craftsmanship." This is also an explanation of method.
  8. "We believe in craftsmanship simple because it stands the test of time."
    This is a statement of fact: craftsmanship stands the test of time. We [the company] agree with this fact.
  9. "Knowledge and knowhow, of materials and techniques, form an unconditional
    but limitless source of inspiration for our designs." Here is another behavior, "Find inspiration for designs in my knowledge of materials and
    techniques.
    " It explains the method an employee of the company follows when looking for inspiration.
  10. "... designs that encapsulate a personal vision of the here and now, but
    which also embody an orientation towards the future." This is a statement of
    fact that their designs encapsulate this orientation.
  11. "For over time, beautiful objects gain in beauty; houses develop character;
    furniture a certain patina; and works of art can but strengthen their force of
    presence." These are several statements of fact. They may say they "believe
    in" these SOFs, but what do they do about them? We can't include this set of phrases in a mental model because there is nothing here that guides a decision. (Note: Often the two words "believe in" are a red flag for something that is not really a guiding
    principle.)
  12. "[The company]'s international design office comprises a team of specialized
    architects, interior decorators, designers and art historians resulting in a
    dynamic exchange of ideas and perspectives." This describes their method,
    that they exchange ideas among the staff. See the next bit for the real guiding
    principle.
  13. "... synergies which form the basis of our unique vision on architecture and
    design." Well, this is not grammatically correct, but let's go with the
    flow. They are stating another behavior here, "Exchange perspectives with our
    varied staff to gain unique vision.
    " This should definitely be included in the mental model.
  14. "With an extensive portfolio of creations in countries such as France, Great
    Britain, Monaco, Italy and the United States, [the company] continues to stamp
    its mark on interior architecture in ways that are as diverse as our discerning
    clientele." This is another reassurance to potential customers, stating that
    they have an extensive portfolio and discerning clients.

Tally: Two Guiding Principles

  • "Watermark every person's lifeworld with their individual style."
  • "Believe details (door handle) are reflections of the whole (palace)."

Tally: Three Behaviors

  • "Recreate a sense of beauty, harmony in each design, concept, and search."
  • "Find inspiration for designs in my knowledge of materials and techniques."
  • "Exchange perspectives with our varied staff to gain unique vision."

Put the pronoun "I" in front of each of those sentences and try them on for size. This statements run through the minds of the employees or partners at this architecture company as they execute design work.

Also note: I use the term "guiding principle" here, but also use the words "belief" and "philosophy" in other places. I mean the same thing by them: something that guides decision-making.

How to Wield Empathy

At at recent workshop, I conducted a spontaneous interview as a demonstration of what I mean by "create a scope perimeter within which any conversation can happen." I asked for a volunteer and for a topic. The volunteer was Daren. The topic was air travel. I scoped the topic down to "planning and booking air travel" just to have a good place to start, and also added "handling the day of travel."

So, with both of us standing at the front of the room, I asked Daren about his thought process as he planned and booked his last flight. He said, "Well, it was a multi-leg flight, and so I knew it would be hard to set up online. So I called. I like to call, anyway. I fly Southwest mostly, and they have really nice reps." I asked him what he meant by "nice reps." The conversation flowed. He was great at describing how he thought. Then he said, "But actually, the customer service at Southwest has changed. It has gotten worse." "How so?" I asked. "Well, recently I flew with my wife and our toddler. As we were walking down the aisle boarding, I was holding my son's hand. Somehow he fell and cut his lip. Luckily we were right near a flight attendant, so I asked her for some gauze or a Band-aid or something. She told me there wasn't any on board, turned away, and just started talking with another passenger. She totally saw my boy's bloody lip! I was so angry!" I wondered out loud, "What did you do?" "I searched my pockets and found a tissue--a dirty tissue--and used it to clean up my son's lip. And my wife was kind of upset at me for letting it happen, so I was also feeling guilty about the whole thing. But I did get up and find the flight attendant and write down her name. I was SO going to complain to management about her!" "And ...?" I prompted. "Well, I cooled off during the flight. She actually came up to us later and was really friendly and helpful. So I decided it would be too much effort to write up a complaint--it wasn't worth it. But I have switched airlines. I used JetBlue on my last business flight." "Why them?" "Oh, I pass their billboard on the highway every morning. I heard they have seatback screens, and I'd like that. I don't like craning my neck to see the screen all the time." The conversation continued in this vein ...

... then I switched topics to "handling the day of travel" just to demonstrate a different type of topic. Daren started out describing his latest business trip on JetBlue. He said, "I like to get to the airport early, like really early, to avoid stress. Maybe I'll sit there and read or work or something." I asked him about his reasons for avoiding stress. He told me, then gave me this example. "On this last trip I spent an hour looking for food. You don't get food on the plane anymore, so you have to buy it ahead of time. Well, I have special dietary needs. Actually, my son has the allergies, but my wife and I eat the same as him just to make things easy. He's allergic to wheat, dairy, nuts, and eggs. So I had to run around looking for something that I could eat. I told myself that morning that I wasn't going to cheat. Sure, it would be easier to just grab something and go, because I'm not the one who's allergic, and my son wasn't with me. But, I wanted to not cheat. So I looked for an Asian place first. Those are usually good--rice is good. But the one I found had teriyaki, which has soy sauce in it. Soy sauce is made with wheat. So I finally ended up at a place that had hamburgers. I bought a hamburger and fries and threw out the buns. I ordered a half pounder because I thought I would need the extra calories if I was going to throw out the buns. I told them no cheese and no mayo. I actually bought two: one to eat then for breakfast and one to eat later on the plane." He continued on with his description. "When I arrived in New York, it was late, but I was hungry again. The only place open was a Jamba Juice, so I thought I could get a smoothie. I spent 20 minutes looking at their menu and realized that all their drinks either had dairy in them or gluten in them." "What did you decide to do?" I asked. "I was hungry, but I just convinced myself to walk away and go get a cab to the hotel. I stood there 20 minutes first."

That's a lot of emotion!

His determination to not cheat on the dietary restrictions of his son stuck with me 30 minutes later, when I went to lunch. I walked into my favorite quick lunch spot: Specialties Cafe & Bakery. It was a relatively new store, and they had these tethered iPads for placing orders. As I browsed through the sandwiches, I tried thinking like Daren did. What sandwich could I buy without wheat, dairy, nuts, or eggs?

A few sandwiches on the menu at Specialties Cafe & Bakery.

Immediately I adopted his approach of throwing out the bread. (Waah! The bread they bake is lovely, and it's pure and simple!) And it looked like I would have to throw out the cheese as well. Wait! There was a peanut butter and banana sandwich--no cheese! Oh, but nuts. Okay, not peanut butter. If I threw out the bread, and the cheese, and asked for no mayo, I would be left with deli meat, lettuce, tomato, onion, and pickle. Wait, could I eat the pickle? Was it pickled using any wheat, like soy sauce contains wheat? I wasn't sure, so I left off the pickle, too. What I was left with was pretty meager, and I knew I couldn't order my favorite cookie to make up for it because of the wheat and eggs and butter. I paused. And sighed. And decided that I had pretended to be Daren for long enough and ordered the peanut butter and banana sandwich with a cookie. I cheated. I felt bad about it.

This is what I mean by empathy. I felt bad about it.

Empathy sounds all wonderful, but it's powerless unless you try out the life of the person you're trying to empathize with. You won't experience the remorse of cheating on dietary restrictions if you don't try to apply those dietary restrictions honestly. I tell people it's similar to what an actor must go through when studying a character. It's the act of leaving yourself behind and stepping into the thought-processes of another person.

When you are designing, how much time do you spend in your own head, applying your own perspective, and how much time do you spend in someone else's mindset? Next time you're designing, try to spend more of the time outside of your own perspective. Make this into a practice. Say things about how you would encounter the design with an "I," but this "I" is the "I" of another human being. "I am starving. I am tired from that long flight from San Francisco, and I'm slightly peeved that all the food places in the airport are closed this late at night. So I'm thrilled to see that Jamba Juice is open--I anticipate gulping down some fruity smoothie within a few minutes. But first I must adhere to my practice--what ingredients are in each drink available? I must read each description very carefully for wheat or wheat by-products. I must scan for dairy. I assume there are no nuts or eggs in these drinks, but I keep that in mind, too, as I study each drink, one by one. I have to set my backpack down beside my suitcase because it is so heavy and this is taking so long ..."

Make empathy a bigger part of your design process.

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