Designing for Amnesia
If you design for dysphasia there will be enough information to remind the user of their task ...
"Here’s an idea: software’s usability is measured with reference to its effectiveness, efficiency, and user satisfaction (ISO 9241). Simple and straightforward stuff that every usability person should know and much can be inferred from running even just a few observational studies - sit the users down in front of a computer, tell them to do a particular task, and watch them make mistakes, maybe get them to complete a questionnaire with a Likert-type scale. As an aside, I’ve always been wary when no mistakes are made by the users. It either means that the users are too familiar with the software, or that the task wasn’t hard enough. Don’t forget that there needs to be a bit of a challenge in these tasks!
But this makes me think of problems with observational data. Yes it is argued that they possess a high degree of ecological validity (in other words, they are quite realistic tasks), but they are not real-life. Because putting camera’s in work places unknown to the staff and observing them that way is probably illegal - don’t do it! - and hard to control (just when you want them to perform a task, say editing a document, they may go off and have a cup of coffee or a natter." continued ... (Via Milui HCI/Usability)
"Here’s an idea: software’s usability is measured with reference to its effectiveness, efficiency, and user satisfaction (ISO 9241). Simple and straightforward stuff that every usability person should know and much can be inferred from running even just a few observational studies - sit the users down in front of a computer, tell them to do a particular task, and watch them make mistakes, maybe get them to complete a questionnaire with a Likert-type scale. As an aside, I’ve always been wary when no mistakes are made by the users. It either means that the users are too familiar with the software, or that the task wasn’t hard enough. Don’t forget that there needs to be a bit of a challenge in these tasks!
But this makes me think of problems with observational data. Yes it is argued that they possess a high degree of ecological validity (in other words, they are quite realistic tasks), but they are not real-life. Because putting camera’s in work places unknown to the staff and observing them that way is probably illegal - don’t do it! - and hard to control (just when you want them to perform a task, say editing a document, they may go off and have a cup of coffee or a natter." continued ... (Via Milui HCI/Usability)
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