dt topic 1 (╯°□°)╯︵

1.1a Anthropometrics 1.1b Psychological Factors 1.1c Physiological Factors

ergonomics

apply scientific human information to design

anthropometrics

human measurements for ergonomics

static/structural data

measurements taken when subject is in standard position, easier to gather

dynamic/functional data

measurements taken when subject performs physical activity; e.g. reaching center of table

percentile range

dispersion of measurements within a sample population

clearance

min/max distance required for a user group to pass through an area; e.g. emergency exits, doors

reach/workspace envelope

space where activity is carried out at a fixed location; e.g. desk space

psychological factors

sensory stimuli that affects user perception, efficiency, comfort; e.g. temperature, light, sound, smell

human info processing system

automatic system, interpreting stimuli and reacting; inputs, sensory, central and motor processes, outputs

info processing breakdown

when a stage in system fails, changes how the user reacts

nominal scale

groups objects by name; e.g. brand names

ordinal scale

groups objects based on ranked order/position; e.g. bronze, silver, gold

interval scale

groups objects with equal difference between each other; e.g. likert scales

ratio scale

grouping objects with true zero measurement, more precise/reliable comparison; e.g. height/weight

physiological factors

environmental stimuli that bodies react to

comfort

considers productivity- endurance, muscle strength in positions; e.g. gaming chairs

fatigue

considers how prolonged use of a product impacts human body; e.g. lifting heavy, bending

physiological factor data

information about how one's body functions

biomechanics

study of body mechanical movements and how they respond to forces; e.g. range of motion

design for inclusion factors

force required, repetition, posture, and duration of task