Examples
People who read English often assume that it is natural to scan a visual field from left to right and from top to bottom. In the United States it is typical for the "on" position of a toggle switch to be "up", whereas in the UK, Australia, and New Zealand it is "down." Also, in these countries, North is the top of a map, up is usually the larger quantity and better, as well. As another example, Japanese do not place an X in a check-box to indicate acceptance—this indicates refusal.
These conventions are generally useful, as once one is used to light switches behaving a certain way one does not need to learn a per-light switch rule but just a general rule. Unfortunately, when people move between cultures or design something for a different group they often do not attend to which conventions remain and which change.
Linguistic and ethnic groups often do not share these notational assumptions. Notational and operative assumptions can change control systems if the users implement, from a different culture than the designers, funnel interpretations from their original world view. Safety-critical systems, according to Seidner (pp. 5–7), become responses to threats of control. Through the emergence of majority and minority categories in society, cultural biases ensue.
Read more about this topic: Cultural Bias
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