Week 2 - Understanding Humans

Question 1

Understanding Cognition let us

Answer 1

1. understand what users can and cannot be expected to do
2. identify nature and cause of problems users face
3. develop theories, models, and guidelines that can lead to better designed products

Question 2

2 Types of Vision asdf

Answer 2

Fovea (focused) vs Peripheral (outer)
asdf
Make target objects pop out in user’s periphery via contrast

Question 3

Gestalt Laws of (visual) Perception

Answer 3

Organisation into groups
- proximity, similarity, common fate

Resolve ambiguity and fill in missing data
- continuity, closure, symmetry

Direct Attention
- figure / ground

Question 4

3 measures we perceive auditory input

Answer 4

intensity (amplitude)
frequency (pitch)
timbre

Question 5

Pros and Cons of Sound Alerts

Answer 5

(pro) reduces demands on visual attention
(con) has low resolution (less info)
(con) presenting absolute data is difficult (diff sounds)
(both) attention-grabbing / annoying

Question 6

Type of Audio - Speech

Answer 6

Requires more processing than plain sounds
- processing may be affected by accent, speed of speech, etc

Question 7

phoneme

Answer 7

smallest unit of sound that distinguishes one word from another

Question 8

Haptic Perception

Answer 8

Tactile : connected to sense of touch
Kinaesthesis : sense and motor activity based in the muscles, joints, and tendons.

Question 9

Receptors responsible for tactile sensation

Answer 9

Mechanoreceptor