Interactive design Those things (two)

After the completion of one of the http://www.3lian.com/edu/2011/10-09/11463.htmlwww.3lian.com/edu/2011/10-09/11463.html, thank you Sham, In the microblogging era was a large number of forwarding and sharing, but also let me receive some mail, asking me why the next chapter is not out? Please forgive my laziness, every weekend I find a lot of excuses to drag and drop, last weekend in the home for two days of sickness-to remind friends, seasonal season, drink more water, more rest, less sick ha.

First, the theoretical premise

1. Man-machine Interaction and human information processing mechanism theory

Since the product design is not for designers, but for users, how they understand, recognize, use the product is the most important. Therefore, "Defining users", "Understanding Users" and "researching users" are important tasks to be done before interactive design.

To understand three different "models": implementation model, user mental model and performance model. In the essence of interactive design, author Alan Cooper wrote: One of the designer's most important goals is to make the presentation model as close to the user's mental model as possible, so that the designer can understand in detail what the target user thinks of "How to use the software". Very critical.

Figure 1: Implementation model, performance model, user mental model

Let's give a simple example to illustrate the above theory. Circuit board ... An ordinary housewife to use the circuit board many times a day, in the morning to plug in the soy milk machine, open the microwave oven, open the rice cooker, wash hair plug in a hair dryer, evening lighting table lamp ... All she had to do was keep the plug plugged into the power supply and then turn on the appliance. If you interview her, do you know how these appliances work? Do you know why there is electricity?

Unless she was a physicist, she might have given me the same answer: I thought I just plugged in the plug, the switch in the socket would be connected, and the current would flow from one central station to the wire and start my appliances. Yes, I thought of it as an infusion of experience ... The current, like the liquid in the infusion tube, is fed into the appliance.

But in fact this simple action has a very complex circuit principle ... Please forgive me for not being able to describe this working principle at all. It might be like the circuit board on the left side of the chart ... But the actual principle is more complicated than this. I do not understand this, but my cognition is wrong, but it does not prevent me from going to use the "electricity". Because the designers gave me a simple plug and socket, as well as a variety of simple switches.

Figure 2: Implementation of Model circuit board and user psychological model plug comparison

The same is true for many product designs, and you don't need to educate your users to be experts in circuit boards and power transmission stations so they can use your product. How do they understand? It's wrong, but it's a sign of how you're going to "show" your design.