Tag Archive for mental models

Background Knowledge, Background Knowledge Errors, Pipsqueak Articles

Categorization & Context

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What is art? Do the objects in the images above form a category of “sculpture”? In Kindergarten, young students are taught a game: every kid brings an object to class; each student is asked to create two piles—the “in” group and “out” group—based on his/her own imagined set of rules; the other children guess the rules that make the category. It’s a great game. A collection of 20 objects can be sorted a staggeringly large number of ways: by color, by size, by use, by ownership, by gender, by taste, by feel, by name, by materials used in manufacturing, by the degree of fun, by shape, by temperature, by degree of reflectiveness or transparency, by the feelings they inspire, by history, by age, by weight, by dimensions, by utility, by the maker, by origin, or any other trait or combination of traits. This is a task that’s truly shaped by imagination. Categorization is a work of creativity. Guessing the rules of categorization is deductive reasoning at its best—scientists, detectives, and doctors do it everyday. But unlike the Kindergarten game, there’s usually no one to tell when the guess is wrong. How we perceive a group of objects depends on the…

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Background Knowledge, Background Knowledge Errors, Cognitive Blindness, Contributor, Cultural Bias, Cultural Differences, Diagnostic Errors, Ethnographic & User Data, Interface Design, Mental Model Traps, Product Design Strategy, Users

A Curiously French Complaint

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Kirby, E. (2008). “ A Curiously French Complaint,” BBC News.  Retrieved on 2008/12/13. http://news.bbc.co.uk/go/pr/fr/-/2/hi/programmes/from_our_own_correspondent/7779126.stm Summary: This article focuses on the cultural differences between the French and British populations in regards to their medical care. Each culture has their own script of understanding, which people rely to set their expectations during a medical crisis. The author Emma experienced a cultural ‘shock’ during her first encounter with a French doctor due to her vastly different set of expectations. She visits a doctor in France due to the severity of a sore throat, where she is “diagnosed with a severe lung infection, mild asthma and had in my hand a prescription for six different types of medicine, an appointment at the local hospital’s radiology department and an emergency referral to a specialist in pulmonary disease (article).” Upon her return to Britain a few days later, she visits her family physician, who within a few minutes diagnoses her with only a ‘common cold.’ Her article then explains how the French expect a much more sever diagnosis to support their physical suffering. France is also the leading country of consumers who take prescription medications. While in England, there’s a more ‘keep a stiff upper lip’…

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Cognitive Blindness, Conceptual Design, Errors, Interaction Design, Interface Design, Pipsqueak Articles, Scaffolding, Users

Error Opportunity Space

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Confronted with one “True or False” question, an individual has a very small error opportunity space: three. There are three possible responses: true, false, or no answer. “No answer” will always be wrong, a betting man should choose one of the possible answers. But unfortunately situations where the error opportunity space is so narrow are rare. And in the real world, dealing with real problems, these spaces tend to be very large. Note that the size of the error opportunity space, EOS, makes no representations about the consequences of getting the problem right or wrong (or partially right or wrong). When the stock market tanked on May 7th, people involved in that process had a very large EOS. A week out, experts and participants are trying to figure out what went wrong and how to limit similar incidents in the future—they are trying, in effect, to drastically reduce the error opportunity space. This is a job of product designers. By analyzing the goals of the users and the system’s constraining variables, we can come up with conceptual design, interaction design, and interface design that would address the problems that were exposed on May 7th. Coming up with a solution is…

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