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1
Q

What’s habituation?

A

Information is so overwhelming it gets ignored

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2
Q

What’s Attentional blink?

A

Attention overloads because of the pace information is presented

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3
Q

What’s Familiar perceptual patterns or frames?

A

It occurs when people are so used to UI layout they navigate the layout automatically.

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4
Q

What’s Contextual Biasing?

A

Impacting your perception with contexts its something is presented.

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5
Q

Perception-based by future?

A

Guide - Sample what we need from world
Filter - things unrelated by our task gets filtered out unconciously

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6
Q

Mechanism behind influencing our perception?

A

Influencing - pulling information that we want
Sensitising - priming our perception to be especially sensitive to what we want to see

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7
Q

Biased perception & Design

A
  1. Avoid Ambiguity 2. Be consistent. 3. Understand the goals
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8
Q

Human perception is biased by:

A

Experience, Current Context and Our Goals

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9
Q

Our perception of objects/events is based on parts…

A

Our perception of parts is based on Whole

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10
Q

Perceptual system causes us to misperceive certain…

A

Stimuli

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11
Q

Name 6 Gestalt Principles

A
  1. PROXIMITY
  2. SIMILARITY
  3. CONTINUITY
  4. CLOSURE
  5. SYMMETRY
  6. FIGURE GROUND
  7. COMMON FATE
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12
Q

Proximity

A

Distance between objects affects our perception of weather and how objects are organised into groups

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13
Q

Similarity

A

Similar-looking objects appear grouped
ex. emails

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14
Q

Continuity

A

Our visual system tends to resolve ambiguity in filling the missing data
ex.slider control

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15
Q

Closure

A

Our visual system automatically tries to close open figures to perceive them as a whole
ex.collection of documents

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16
Q

Symmetry

A

Our visual system automatically organises and interprets the data to simplify it/giving it symmetry
ex.sorting a table

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17
Q

Figure/Ground

A

Our mind separates the visual field into the figure and ground.
ex. pop up info

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18
Q

Common Fate

A

Moving object. PROXIMITY and SIMILARITY, objects that move together are perceived and grouped as related.

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19
Q

Presenting info in a structured manner makes it

A

Easier for people to scan understand and remember. Eliminates the need for words and repetition.

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20
Q

Use visual hierarchy…

A

Break content into sections

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21
Q

Hierarchical structuring of information…

A

Helps people with impairments

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22
Q

What is CHUNKING?

A

Separating data into chunks make it easier to scan and remember.

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23
Q

Our vision is to optimised to detect…

A

contrasts(edges), not brightness

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24
Q

Our ability to distinguish colors depends on

A

How colors are presented

25
The users ------ and ------ affect color perception
display, viewing, dissabilties
26
Normal people have __ cone receptor cells.
3
27
Color blind have __
2
28
Cones are sensitive to colors...
RED, GREEN and LIGHT BLUE
29
RODS are sensitive to ... While CONES are sensitive to....
1. Brightness 2. Different frequencies of light
30
LOW frequency
sensitive to middle( yellow ) and red frequencies
31
MIDDLE frequency
respond to blue
32
HIGH frequency
respond to violets and blues
33
PALENESS
the less saturated, less easy to tell them apart
34
COLOR PATCH SIZE
Thinner/Smaller objects are, harder to distinguish the color
35
SEPERATION
more separated the color chunks are, the more difficult it is to distinguish them.
36
Color blindness affects...
8% men and 0,5% women RED 'N GREEN
37
EXTERNAL FACTORS THAT INFLUENCE COLOR PERCEPTION.
1. Variation in color displays 2. Grayscale displays 3. Different light modes 4. Display Angle 5.Ambient illumination
38
PIXEL DENSITY
each eye has 6-7 mil rods
39
DATA COMPRESSION
information from vitals is compressed out our brain
40
FOEVA
our perceptions blind spot
41
What do we see in the blind spot?
Gross impressionistic way based on what we know and expect
42
Periphery guides...
fovea towards object of matching goals. fovea scans - periphery guides
43
Periphery detects...
motion. anything that moves in our visual -periphery draws our attention, therefore fovea.
44
Periphery sees in the...
dark. low light- rods only and its called scotopic vision.
45
How to make error messages more seen?
1. put it where they are looking 2. mark the error 3. use the error symbol 4. reserve red for error
46
How to make them even more seen?
1. Pop up message 2. Using sounds 3. Wiggle or Blink
47
Human resolution is...
super high and the small area is called the fovea and its only 1% of our perceptual vision.
48
Reading is..
unnatural. Talking is natural however.
49
Only part of our visual system is trained to read...
fovea and penifovea.
50
We bounce between words at 0.1 sec and its...
saccades
51
Saccades still follow the
text.
52
Reading is both...
1. Bottom/Up Feature 2. Top/Down Context
53
Bottom/Up Feature
Shapes to letters to words to sentences to paragraphs. For skilled
54
Top/Down Context
Assists. For dummies
55
Less skilled people use...
a part of their brains to sound out the words that includes a different part of the brain
56
Skilled people..
often skip that part.
57
GOOD READS INCLUDE
1. No Jargonwords 2. No Unusual scripts, typos or ALLCAPS 3. No Tiny fonts 4. No Text on noisy backgrounds 5. No Text on poorly contrasted backgrounds 6. No Info buried in repetition
58
People dont read they
SCAN

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