Human Computer Interaction: SE-210
University of Engineering & Technology, Taxila
Department of Software Engineering
SE-210: Human Computer Interaction (Spring-2009)
Lab Session 01
Student Name:
Roll/No:
Group:
Visual Perception and Short Memory Test
In this lab session, we will focus on Visual Perception and Short Memory Test. We will
experience the practical example of these important topics studied in chapter 01 of the
course.
Experiment 1.0: Visual Perception
Human vision is a highly complex activity with a range of physical and perceptual
limitations; yet it is a primary source of information for the average person. We can
roughly divide visual perception into two stages: the physical reception of the stimulus
from outside world and processing and interpretation of that stimulus. On the other hand,
the physical properties of the eye and the visual system mean that there are certain things
that cannot be seen by the human; on the other interpretative capabilities of visual
processing of the eye and the visual processing allow images to be constructed from
incomplete information. We need to understand both stages as both influence what can
and cannot be perceived visually by a human being, which in turn directly affects the way
that we design computer systems. Vision begins with light. Let’s see how we perceive the
following images, so lets have a perception test:
The Perception Test
Consider the following images and tell what you perceive from the following images:
Human Computer Interaction: SE-210
a)
b)
Human Computer Interaction: SE-210
d)
Human Computer Interaction: SE-210
e)
f)
Human Computer Interaction: SE-210
g)
h)
Human Computer Interaction: SE-210
i)
j)
Human Computer Interaction: SE-210
Experiment 1.1: Small Memory Test
Human short memory has a limited span .This is a series of experiments to determine
what that span is.
For that purpose let us try, Kim’s game :
Kim’s Game
Divide into groups >Each group gathers together an assortment of objects _Pens, pencils,
paper –clips, books , sticky notes, etc. The stranger the object, the better! We need a large
number of them –at least 12 to 15.Place them in some compact arrangement on a table, so
that all items are visible .Then swap with another group for 30 seconds only and look at
their pile. Return to your table, and your own try to write down all the items in the other
groups’ pile.
Finally, Compare each student’s list with what they actually have in their pile. Compare
the number of things they remembered with how the rest of the group did. Now think
introspectively: What helped them remember certain things? Did they recognize things in
their pile that they originally had? Did that help? Do not pack the things away just yet.
Calculate the average score for your group. Compare that with the averages from the
other groups.
Answer the following Questions:
What conclusions can you draw from this experiment ? What does this indicate about the
capacity of short term memory? What does it indicate that helps improve the capacity of
short – term memory?