HCIEffectiveness of different designs of input and

out put

Lesson ObjectiveBe able to compare and contrast, using HCI

principles, the effectiveness of different designs of input and output.

Be able to identify qualitative and quantitative measures of effectiveness.

Keywords:Compare, Contrast, Qualitative, Quantitative

Starter Task – 5 minWhat do you thing the words ‘Contrast’ and

‘Compare’ mean? In pairs discuss the matter and come up with some examples to answer the question.

Contrast & CompareComparison is used to describe the

similarities of two different objects (basically how ‘alike’ they are).

Contrast is used to describe the differences between two different objects (essentially how ‘unlike’ they are).

ExamplesSome compare–contrast examples:Both Microsoft Windows® and Linux have

GUIs (comparison).More users are familiar with Microsoft

Windows®’ GUI (contrast).QWERTY and Dvorak are both recognisable

keyboard types (comparison).Unlike QWERTY keyboards, Dvorak aims to

reduce typist fatigue (contrast).

Quantitative & Qualitative MeasurementQuantitative: Measurement that involves

numbersQualitative: Measurement is defined in a

descriptive manner.

Lets learn more about this by turning to page 33 of the HCI handbook.

TASK 1 - 10 MINIn Pairs:

Compare & contrast “Windows Media Player” and “Real Player / i- Tunes”

Use the qualitative and quantitative measures to make a informed judgement on which has the best HCI.

Task 2 – 10 minIn Pairs - brain storm on 3 HCI input and

output for the scenario you are working on for the assignment.

List the factors that would enable visually impaired people of colour blindness to use a particular computer software.

Search the internet to find links of software that cater for such an audience. Make a note of the features that they have incorporated

Task 3 – 15 minContinue with the interface design making

sure you implement some of the ideas gathered within Task 2

Make sure you design using Visual Studio.

Task 4 - 15 minStart drafting a comparison between their

interface and what software they have found from the internet – Use MS Word

PLENARY1 Finding similarities is ‘contrast’ or ‘compare’?2 Finding differences is ‘contrast’ or ‘compare’?3 Numbers are a form of …………………

measurement.4 Client needs can be not achieved, fully achieved

or ……… achieved.5 Name three types of comparative costs.6 Descriptions are a form of ……………………………

measurement.7 Name three measurements of user satisfaction.8 State two key questions used as part of HCI

evaluation.

KeywordsCompare, Contrast, Qualitative, and

Quantitative

Block letters (capital letters)High Contrast colours ( Black background

with white text for example)Large fontsLarge IconsBold lettersSoundLarge buttons