Time and effort expended to complete tasks

Slides:

Advertisements

Similar presentations

Human-Computer Interaction

Advertisements

Interaksi Manusia dan Komputer Prinsip Usability 1/17 Usability Principles Human Ability Human Capabilities Memory Process Observations Problem Solving.

The Senses Our SENSES tell us: What is out in the environment? How much is out there? Is there more or less of it than before? Where is it? Is it changing.

Colors – part 1 K1066BI – Graphical Design Teppo Räisänen

1 Human Abilities. 2 Basic Human Capabilities Why do we have to learn this stuff? Do not change very rapidly –Not like Moore’s law! Have limits, which.

Sensation and Perception

DO NOW: What do you know about our sense of sight and vision? What parts of the eye do you know? What do you know about light?

HCI Frameworks How we conceptualize users of computing systems.

© 2002 John Wiley & Sons, Inc. Huffman: PSYCHOLOGY IN ACTION, 6E PSYCHOLOGY IN ACTION Sixth Edition by Karen Huffman PowerPoint  Lecture Notes Presentation.

Five Senses? There are other senses of which we are unaware or are physiologically separate from the classic senses: Kinesthetic senses (motor sense) Proprioception.

$100 $400 $300$200$400 $200$100$100$400 $200$200$500 $500$300 $200$500 $100$300$100$300 $500$300$400$400$500.

Team 1 $1,000,000 $500,000 $250,000 Our sense organs are packed with specialized cells called _________ that convert environmental energies into signals.

Myers EXPLORING PSYCHOLOGY Module 14 Introduction to Sensation and Perception: Vision James A. McCubbin, PhD Clemson University Worth Publishers.

Sensation Chapter 5. 6 major senses Vision = wavelengths, visible spectrum, focus, dimensions, color Hearing = sound waves, amplitude, loudness, pitch,

.  Sensation: process by which our sensory receptors and nervous system receive and represent stimulus energy  Perception: process of organizing and.

Introduction to Psychology Perception. Psychophysics Sensation is the stimulation of sense organs Perception is the selection, organization, and interpretation.

Fall 2002CS/PSY Human Capabilities Why do we care? (better design!) Want to improve user performance Knowing the user informs the design  Senses.

The human 11 Lecture 2 chapter 1 the human 1 of 3.

Chapter 4 Sensation and Perception PSYCHOLOGY Schacter Gilbert Wegner Brian Kelley, M.A., LPC.

The human What does this means in terms of human processing? the human 13.

Sensation and Perception Gateway to the outside world.

Virtual University - Human Computer Interaction 1 © Imran Hussain | UMT Imran Hussain University of Management and Technology (UMT) Lecture 7 Human Input-Output.

Unit 5: Sensation & Perception Vision and Hearing.

© 2000 John Wiley & Sons, Inc. Huffman/Vernoy/Vernoy: Psychology in Action 5e Psychology in Action, Fifth Edition by Karen Huffman, Mark Vernoy, and Judith.

Step Up To: Psychology by John J. Schulte, Psy.D. From Myers, Psychology 8e Worth Publishers.

Sensation Intro. to Psychology PSY-101 Instructor: Ms. Tahira Zafar.

DO NOW. VisionVision Our most dominating sense. Visual Capture.

- SENSATION REFERS TO THE PROCESS OF SENSING OUR ENVIRONMENT THROUGH TOUCH, TASTE, SIGHT, SOUND, AND SMELL. THIS INFORMATION IS SENT TO OUR BRAINS IN RAW.

Sensation and Perception UNIT 4 S ensation and perception form our world. Sensation is processed by physical receptors; perception is a psychological function.

MODULE #13: VISION. Vision Transduction: transformation of stimulus energy (light, sound, smells, etc.) to neural impulses our brains can interpret. Our.

Chapter 3 Sensation and Perception. Copyright © 1999 by The McGraw-Hill Companies, Inc. 2 Detecting and Perceiving the World Sensation –the process of.

SENSATION The basics, vision, and hearing, and the other senses.

Myers’ PSYCHOLOGY (6th Ed)

Human Capabilities: Perception

Sensation and Perception

Myers’ PSYCHOLOGY (6th Ed)

Human Computer Interaction Lecture 2 The Human

Psychology Ch. 3 Sensation and Perception

Myers’ PSYCHOLOGY (5th Ed)

Unit 4: Sensation & Perception

Chapter 5 Vision.

Wadsworth, a division of Thomson Learning

INPUT-OUTPUT CHANNELS

Department of Computer Science and Engineering

How do we realize design? What should we consider? Technical Visual Interaction Search Context of use Information Interacting/ transacting.

Sensation and Perception

Chapter 6 Sensation and Perception

Human Capabilities: Perception

Chapter 6 (C): Vision.

Human Capabilities: Perception

Review Session 3: Sensation and Perception

VISION Module 18.

Introduction to Sensation and Perception

Sensation and Perception

Chapter 4: Sensation and Perception

Vision Our most dominating sense. Visual Capture.

Sensation & Perception

1. The point at which a stimulus can be detected

A.3 Perception of Stimuli

Sensation & Perception

Human Capabilities: Perception

Usability Principles Human Ability Human Capabilities Memory Process

Chapter Four Sensation

Experiencing the World

1. The point at which a stimulus can be detected

Sensation and Perception

(Do Now) Journal What is psychophysics? How does it connect sensation with perception? What is an absolute threshold? What are some implications of Signal.

Sensation and Perception

CHAPTER 3 SENSATION.

Presentation transcript:

Time and effort expended to complete tasks Human Capabilities Why do we care? (better design!) Want to improve user performance Knowing the user informs the design Senses Information processing systems Physical responding Time and effort expended to complete tasks Fall 2002 CS/PSY 6750

I. Senses Sight, hearing, touch important for current HCI smell, taste ??? Abilities and limitations affect design Fall 2002 CS/PSY 6750

Vision Visual System Eye Retina Neural pathway ~ 80% of brain’s operation Fall 2002 CS/PSY 6750

Visual Abilities Sensitivity Acuity Movement luminance: 10-6~107 mL (see notes) Acuity detection, alignment, recognition (visual angle) retinal position: fovea has best acuity Movement tracking, reading, vibrations Note: Vision decreases with age Implications (??) Font size & location depends on task Much done by context & grouping Useful Luminance range for vision: 10-6 ~ 107 milliLamberts Note: Absolute threshold 10-6 comfortable reading: 1~100 mL) colorless vision 10-6 ~ 10-1 mL color vision 1 ~ 107mL Acuity is better in fovea (center) poorer in periphery Fall 2002 CS/PSY 6750

Color Sensory response to electromagnetic radiation in the spectrum between wavelengths 0.4 - 0.7 micrometers 10-6 10-1 0.5 105 108 gamma ultraviolet visible microwave tv Fall 2002 CS/PSY 6750

Color Vision Fall 2002 CS/PSY 6750

Color Vision Color & the retina Implications (??) 380 (blue) ~ 770nm (red) Problems with cones or ganglion cells causes problems with color perception (Not really “color blindness”) 8% males, 0.5% females Implications (??) Avoid saturated colors Color coding should be redundant when possible Fall 2002 CS/PSY 6750

Hearing Capabilities (best-case scenario) pitch - frequency (20 - 20,000 Hz) loudness - amplitude (30 - 100dB) location (5° source & stream separation) timbre - type of sound (lots of instruments) Often take for granted how good it is (disk whirring) Implications (??) Fall 2002 CS/PSY 6750

Touch Three main sensations handled by different types of receptors: Pressure (normal) Intense pressure (heat/pain) Temperature (hot/cold) Sensitivity, Dexterity, Flexibility, Speed Where important? Mouse, Other I/O, VR, surgery Fall 2002 CS/PSY 6750

III. Motor System Capabilities Often cause of errors Principles Range of movement, reach, speed, strength, dexterity, accuracy Often cause of errors Wrong button Double-click vs. single click Principles Feedback is important Minimize eye movement Fall 2002 CS/PSY 6750