CH2 Flashcards
(40 cards)
People are a component of HCI system
what We need to take into account
- cognitive processes involved and cognitive limitations of the user
- how we process information
- how we structure our actions
- how we communicate between ourselves and artifacts (computer, machines)
what we need to understand about the user?
- the physical and psychological requirements
- what users can and cannot be expected to do
- the nature and causes of problems users encounter
Better understanding of our users can lead to?
design better interactive products through:
- supply of theories
- modelling tools and methods
information processing has been used as?
a basis for understanding user interaction
what human process model do or how it works?
- models the information processes of a user interacting with a computer
- predicts which cognitive processes are involved when a user interacts with a computer
- enables calculations to be made of how long a user will take to carry out of a task.
the model of human processor the brain viewed as three interacting subsystems what are they?
-
Perceptual systemstorage of signals form senses
- images, sounds
- cognitive systemthink , analyze and recall form long term memorystorage in STM / working memory
-
motor
- called when physical response is required
- transmit signals to muscles
what is cognition?
cognition is what goes on in our minds when we carry out everyday activities.
what doses the mind do?
- Perceiving - learning - remembering
- controlling actions
- thinking - emotions
- Planning - imagining - creating
- understanding language and others
- communicating with others
- making decisions- solving problems
- Daydreaming and other mental processes / phenomena
what dose cognitive process involves?
- Thinking, learning
- Remembering
- Seeing, Reading, Writing, speaking, and listening
- Problem- solving, planning, reasoning, and decision making, learning
what dose cognitive processes require?
- Attention
- Memory
- Perception and recognition (التصور والتميز)
what is attention?
Is the process of selecting thigs to concentrate on at a point in time form range of mass of stimuli around us
what dose attention involves?
- It involves out auditory an our visual senses
- Allows us to focus in information that is relevant to what we are doing
- Involves audio and / or visual senses
attention allows us to?
focus on information that is relevant to what we are doing
focused and divided attention?
enables us to be selective in term of the mass of computing stimuli but limit our ability to keep track of all events
the extent of focus process is easy or difficult depends on?
- OUR GOLAS
- INFORMATION PRESENTATION
having clear goals helps attention how?
IF we have a clear goals we try to match this with the information that is available.
if we are not sure exactly what we are looking for we may browse through information allowing it to guide our attention to interesting items.
what is The Perceptual System?
perception refers to how information is acquired from the environment, via the different sense organs (eye, ears … etc ) and transformed into experience of object, events, sounds, and taste
what perception involves?
- the use of our sense to detect information
- other cognitive processes such as memory, attention, and language.
Why Study perception? 3 reasons
- the understanding of how we put together the basic features
- the understanding how information is acquired form the world and transformed into experiences
- Identify / correct environmental hazards
- design devices
- Optimize perceptual performance.
- ## Design for people with perceptual impairment.Perception and pleasure
- 😍 Visual art/music/gourmet cuisine engage sensory system in ways that we find pleasurable
- understand perception allow us to heighten or sensory experience
understand perception allow us to heighten or sensory experience
Human memory storage processing system
how sensory storage works?
Holds information from the the eye ( iconic storage ) and ears (echoic storage )
how long the information remain in the sensory memory?
less than one second after which it must enter the short term memory or it well be lost
information from sensory memory must be transferred to __ ?
- working memory or
- short term memory
what is short term memory?
memory that can hold a limited amount of information in a very accessible state temporarily.
