Computing products for creating persuasive technology are getting easier to use with innovations in online video, social networks, and metrics, among others. As a result, more individuals and organizations can utilize different media to influence people’s behavior via technology channels. In-home displays (IHDs) are one of these trendy and powerful media that have the potential to communicate energy usage feedback and to persuade energy saving action to householders. This paper presents a laboratory study to investigate how the user interface design of IHDs might persuade people to save energy. A model was proposed, questionnaires, including open-ended questionnaire and closed-ended questionnaire, were created at a first phase of the lab study to gather information regarding user preference among 35 information displays and icon displays.
In the second phase study, four user interface prototypes were developed to investigate the accuracy, speed, and user satisfaction. The reaction times between icon-text and icon showed no significance level, except for the difficult tasks in the first section. The user preference assessment confirmed that the level of easiness, satisfaction, and exploring new feature is significantly different between icon-text and icon prototypes. The other user preference assessment result also confirmed that the satisfaction and confidence level between without feedback and with feedback message prototype is significantly different. The satisfaction and confident level on feedback message prototype is higher.

Computing products for creating persuasive technology are getting easier to use with innovations in online video, social networks, and metrics, among others. As a result, more individuals and organizations can utilize different media to influence people’s behavior via technology channels. In-home displays (IHDs) are one of these trendy and powerful media that have the potential to communicate energy usage feedback and to persuade energy saving action to householders. This paper presents a laboratory study to investigate how the user interface design of IHDs might persuade people to save energy. A model was proposed, questionnaires, including open-ended questionnaire and closed-ended questionnaire, were created at a first phase of the lab study to gather information regarding user preference among 35 information displays and icon displays.
In the second phase study, four user interface prototypes were developed to investigate the accuracy, speed, and user satisfaction. The reaction times between icon-text and icon showed no significance level, except for the difficult tasks in the first section. The user preference assessment confirmed that the level of easiness, satisfaction, and exploring new feature is significantly different between icon-text and icon prototypes. The other user preference assessment result also confirmed that the satisfaction and confidence level between without feedback and with feedback message prototype is significantly different. The satisfaction and confident level on feedback message prototype is higher.

Abstract
Acknowledgement
List of Figures
List of Tables
Chapter 1 Introduction
1.1 Research Background
1.2 Research Objectives
1.3 Research Outline
Chapter 2 Literature Reviews
2.1 Persuasive Technology
2.1.1 Introduction to Persuasive Technology
2.1.2 Computers in Persuasive Roles
2.1.3 Persuasive Technology Applications
2.2 Human Information Processing
2.2.1 Text
2.2.2 Icon
2.3 Usability Analysis and Testing
Chapter 3 Model of Saving Energy Action
Chapter 4 Methodology
4.1 Questionnaire Design
4.1.1 Open-ended Questionnaire
4.1.2 Closed-ended Questionnaire
4.2 User Interface Prototype Design
4.3 Experimental Design
4.3.1 Pilot Study
4.3.2 Experiment
Chapter 5 Result and Discussion
5.1 Questionnaire Result
5.2 User Prototype Design
5.3 Pilot Study
5.4 User Interface Prototypes Evaluation
5.4.1 Reaction Times
5.4.2 Error Times
5.5 User Preference Assessment
5.5.1 User Preferences Assessment based on Icon-Text and Icon User Interface Prototypes
5.5.2 User Preferences Assessment based on Without Feedback and With Feedback Message Prototypes
Chapter 6 Conclusion
6.1 Conclusions
6.2 Future Research
REFFERENCES