O'Reilly logo

Research Methods in Human-Computer Interaction, 2nd Edition by Harry Hochheiser, Jinjuan Heidi Feng, Jonathan Lazar

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 3

Experimental design

Abstract

When designing an experiment, researchers need to determine the dependent and independent variables and how to measure or control those variables. There are three commonly adopted designs in human-computer interaction (HCI) studies: the between-group design, the within-group design, and the split-plot design. The between-group design is cleaner, avoids the learning effect, and is less likely to be affected by fatigue and frustration. But this design is weaker due to the high noise level of individual differences and usually requires larger number of participants. The within-group design effectively isolates individual differences and, therefore, is a much stronger test than the between-group design. Another ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required