MEC 325 Lecture Notes - Lecture 3: Electrodermal Activity, Electromyography, Dependent And Independent Variables
6 Jul 2017
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Chapter 3 undertake investigation to evaluate new design and it"s issues. Invesigation methods in hfe: descriptive studies, which are used to characterize a population of users. Anthropometric sizes, hearing capabilities, visual performance, age, gender, size, education, and experience. Purpose is to collect data with the aim of understanding a pattern, trend, or. Anthropometric data (measuremnts relevant to the human body-size) A systems approach to measurement of human performance and preferences: experimental studies, which test the effect of some design feature on human performance. To investigate specific issues-> lab or real field enviro. Benefit: results-> firm conclusions wrt cause and effect. Indicatiors- dependant vari-number of errors, number of injuries, time on task, and quality of work. Ex. temperature and noise in the environment subsystem and design of controls and displays in the machine subsystem. There is a relationship between the variables so that y=f(x) X is the independent variable, the design that is under investigation.
