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xv | |
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xxi | |
Preface |
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xxiii | |
Acknowledgements |
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xxv | |
Authors |
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xxvii | |
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xxix | |
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1 | (8) |
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1.1 Who Is This Book For? |
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1 | (1) |
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1.2 How Different Readers Should Approach Reading the Book? |
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1 | (1) |
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1 | (1) |
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1.4 Aims and Objectives/Purpose |
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2 | (2) |
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2 | (1) |
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3 | (1) |
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1.5 Contribution to Research |
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4 | (1) |
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1.6 Structure of the Book |
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4 | (5) |
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Chapter 2 Models of Models: Filtering and Bias Rings in Depiction of Knowledge Structures and Their Implications for Design |
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9 | (28) |
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9 | (6) |
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2.1.1 The Concept of Mental Models as Inferred Knowledge in Cognitive Processing |
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10 | (1) |
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2.1.1.1 Johnson-Laird (1983) |
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11 | (1) |
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2.1.1.2 Bainbridge (1992) |
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12 | (1) |
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12 | (1) |
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2.1.1.4 Summary of Comparison of Theories of Cognitive Processing |
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13 | (2) |
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2.2 Importance of Accuracy in Mental Model Descriptions: The Development of an Adaptable Framework |
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15 | (16) |
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2.2.1 Bias and Inhering When Constructing or Accessing Mental Models |
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15 | (4) |
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2.2.2 Accuracy of Mental Model Content: A Case Study of Kempton (1986) Illustrating the Impact of Methodology |
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19 | (1) |
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2.2.2.1 Bias When Accessing Another Person's Mental Model |
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20 | (3) |
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2.2.3 Accuracy in Definition: The Perspective from Which Data Is Gathered |
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23 | (1) |
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24 | (2) |
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2.2.3.2 Wilson and Rutherford (1989) |
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26 | (4) |
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2.2.3.3 Summary of Comparison of Perspectives of Mental Models |
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30 | (1) |
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2.3 Application of Adaptable Framework: Charactering Mental Models by Perspective and Evaluating `Risk of Bias' |
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31 | (1) |
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32 | (5) |
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Chapter 3 The Quick Association Check (QuACk): A Resource-Light, `Bias Robust' Method for Exploring the Relationship between Mental Models and Behaviour Patterns with Home-Heating Systems |
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37 | (40) |
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37 | (2) |
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3.2 Methods Used for the Development and Evaluation of QuACk |
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39 | (14) |
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40 | (1) |
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3.2.2 Assess Methods for Home-Heating Context |
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41 | (6) |
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3.2.2.1 Content Analysis of Previous Research |
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47 | (1) |
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3.2.3 Existing Categories of Mental Models and Behaviour |
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47 | (2) |
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3.2.4 Consider Bias in Mental Models Research |
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49 | (1) |
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3.2.5 Developing Data Collection Method |
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49 | (2) |
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3.2.5.1 Paper-Based Activities |
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51 | (1) |
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3.2.5.2 Verification of Outputs |
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51 | (1) |
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3.2.6 Developing Analysis Method |
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52 | (1) |
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3.3 Pilot Case Studies and Participant Observation for Data Collection |
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53 | (2) |
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3.4 Participant Observation -- Data Analysis |
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55 | (12) |
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3.4.1 Applying the Analysis Reference Table |
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55 | (1) |
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3.4.1.1 Behaviour Pattern |
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55 | (6) |
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3.4.1.2 Mental Model Description of Home-Heating Function |
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61 | (3) |
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3.4.2 Benefits of Output Formats |
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64 | (1) |
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3.4.2.1 Self-Report Diagram |
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64 | (1) |
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3.4.2.2 Mental Model Description |
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64 | (1) |
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3.4.2.3 Association between Mental Model of Device Function and Behaviour |
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64 | (1) |
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3.4.3 Evaluating the Utility of the Analysis Reference Table |
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65 | (1) |
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3.4.4 Improvements to the Analysis Reference Table |
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65 | (2) |
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67 | (4) |
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3.5.1 Measurement Validity of Self-Report Behaviour |
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67 | (2) |
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3.5.2 Reliability of Analysis Method |
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69 | (1) |
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3.5.2.1 Dynamics of Exercise |
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69 | (1) |
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3.5.2.2 Results of Inter-Analyst Reliability Exercise |
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69 | (2) |
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71 | (1) |
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71 | (4) |
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73 | (2) |
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75 | (2) |
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Chapter 4 Case Studies of Mental Models in Home Heat Control: Searching for Feedback, Valve, Timer and Switch Theories |
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77 | (34) |
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77 | (3) |
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80 | (9) |
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4.2.1 Participants and Setting |
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80 | (1) |
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81 | (1) |
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4.2.3 Dynamics of the Interview |
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82 | (5) |
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4.2.4 Analysis of Outputs |
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87 | (2) |
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89 | (16) |
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4.3.1 Participant A: A Feedback Mental Model of Thermostat with Elements of Valve Behaviour |
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89 | (6) |
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4.3.2 Participant B: Feedback Behaviour without a Feedback Mental Model |
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95 | (4) |
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4.3.3 Participant C: Timer Model for Alternate Control Devices |
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99 | (6) |
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105 | (4) |
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109 | (2) |
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Chapter 5 When Energy-Saving Advice Leads to More, Rather Than Less, Consumption |
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111 | (24) |
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111 | (4) |
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115 | (2) |
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115 | (1) |
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116 | (1) |
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116 | (1) |
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5.2.4 From Central Heating System |
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116 | (1) |
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117 | (1) |
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5.3 Results and Discussion |
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117 | (16) |
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5.4 Summary and Conclusions |
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133 | (2) |
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Chapter 6 Mind the Gap: A Case Study of the Gulf of Evaluation and Execution of Home-Heating Systems |
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135 | (48) |
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135 | (5) |
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6.1.1 Norman's (1986) Gulf of Evaluation and Execution |
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137 | (2) |
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6.1.2 Conceptual and Mental Models of Home-Heating Systems |
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139 | (1) |
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140 | (10) |
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6.2.1 The Design Model Expressed as an Expert `User Mental Model' |
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142 | (3) |
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6.2.2 What Does `Appropriate' Home-Heating Control Look Like? |
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145 | (1) |
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6.2.3 Stages of `Appropriate' Activity with a Home-Heating System |
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145 | (5) |
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6.3 System Image of Home Heating |
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150 | (4) |
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6.3.1 Home Heating at the `System' Level |
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150 | (2) |
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6.3.2 Home Heating at the Device Level |
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152 | (2) |
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6.4 The User's Mental Model of Home Heating -- Case Study Results and Discussion |
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154 | (15) |
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6.4.1 How Compatible Were the Case Study User Mental Models of Home Heating? |
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155 | (1) |
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6.4.2 How Appropriate Were Case Study Self-Reported Behaviour of Home-Heating Operation? |
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155 | (7) |
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6.4.3 A Discussion of the Seven Stages of Activity When Users Operate Their Home-Heating System |
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162 | (1) |
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6.4.3.1 The Gulf of Execution |
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162 | (5) |
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6.4.3.2 The Gulf of Evaluation |
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167 | (2) |
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169 | (14) |
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Chapter 7 Using Interface Design to Promote a Compatible User Mental Model of Home Heating and Pilot of Experiment to Test the Resulting Design |
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183 | (18) |
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183 | (3) |
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186 | (11) |
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7.2.1 Design of Key Devices |
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186 | (1) |
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186 | (2) |
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188 | (2) |
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190 | (1) |
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191 | (1) |
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7.2.2 Design of System View |
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192 | (3) |
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7.2.3 Creating a Simulation |
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195 | (2) |
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197 | (1) |
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197 | (3) |
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200 | (1) |
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Chapter 8 Mental Model Interface Design: Putting Users in Control of Their Home-Heating Systems |
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201 | (26) |
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201 | (3) |
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204 | (5) |
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8.2.1 Experimental Design |
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205 | (2) |
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207 | (1) |
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8.2.3 Apparatus and Materials |
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207 | (1) |
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208 | (1) |
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209 | (12) |
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8.3.1 User Mental Models of Home-Heating Simulation |
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209 | (6) |
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8.3.2 User Behaviour with Home-Heating Simulation |
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215 | (1) |
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8.3.2.1 Underlying Assumption for Study |
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215 | (6) |
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221 | (5) |
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8.4.1 Improved Discoverability of Home-Heating Controls |
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221 | (1) |
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8.4.2 More Appropriate Mental Models |
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222 | (1) |
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8.4.3 Increased Use of Frost Protection and Holiday Buttons |
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223 | (1) |
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8.4.4 More Appropriate Behaviour with TRV Controls |
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223 | (1) |
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8.4.5 Greater Control of Boiler Activation |
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224 | (1) |
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8.4.6 Increased Goal Achievement |
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225 | (1) |
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8.4.6.1 Limitations of Study |
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225 | (1) |
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226 | (1) |
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227 | (10) |
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227 | (1) |
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227 | (3) |
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9.2.1 Bias Must Be Considered in Mental Models Research |
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228 | (1) |
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9.2.2 Outputs from QuACk Help Explain Energy-Consuming Behaviour |
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228 | (1) |
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9.2.3 We Need to Think beyond the Thermostat -- Home-Heating Behaviour Should Be Understood at a System Level |
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229 | (1) |
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9.2.4 Broader System Variables Need to Be Understood for Optimal Consumption, but Are Not Promoted by Existing Technology |
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229 | (1) |
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9.2.5 Mental-Model-Driven Design Helps Users Achieve More Heating Goals |
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230 | (1) |
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9.3 Core Issues Relating Particularly to the Home-Heating Case Study |
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230 | (2) |
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9.3.1 Optimal Home Heat Control Is a Complex Task |
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230 | (1) |
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9.3.2 Existing Technology Does Not Support a `Systems UMM' of Home Heating |
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231 | (1) |
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9.3.3 We Cannot Control All the Variables That Affect Optimal Home Heating Control |
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232 | (1) |
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232 | (2) |
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9.4.1 Recognize the Complexity of the Task for Householders, When Embarking on Strategies to Reduce Home-Heating Consumption |
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232 | (1) |
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9.4.2 Use System-Level Strategies for Encouraging Appropriate Home-Heating Consumption |
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233 | (1) |
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9.4.3 Use a Mental Models Approach When Seeking to Encourage Appropriate Behaviour in Complex Systems |
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233 | (1) |
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9.4.4 Design Future Heating Systems with Optimal Consumption as the Primary Goal |
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233 | (1) |
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9.5 Areas of Future Research |
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234 | (1) |
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9.5.1 Extension of the `Tree-Ring' Method for Considering Bias |
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234 | (1) |
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9.5.2 Extension of the QuACk Method for Exploring Association with Mental Models and Behaviour |
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234 | (1) |
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9.5.3 Tailored Guidance for Optimal Home-Heating Behaviour in Different Circumstances |
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234 | (1) |
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9.5.4 Enhancement to Home-Heating Control Panel and Testing in Domestic Setting |
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234 | (1) |
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235 | (2) |
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Appendix A The Quick Association Check |
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237 | (10) |
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A.1 QuACk Instructions for Interviewer |
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237 | (2) |
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237 | (1) |
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238 | (1) |
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A.1.2.1 Provide Participant Information Sheet |
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238 | (1) |
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A.1.2.2 Verbal Positioning |
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238 | (1) |
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A.1.3 What to Expect and How to Deal with It |
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238 | (1) |
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239 | (1) |
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A.2 QuACk Participant Information Sheet |
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239 | (1) |
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A.3 QuACk Interview Template for Home-Heating Domain |
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240 | (7) |
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A.3.1 Background Experience in Home Heating |
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240 | (1) |
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241 | (1) |
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A.3.2.1 Self-Report on Usage |
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242 | (1) |
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A.3.2.2 Response to Scenarios |
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243 | (1) |
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A.3.3 Mental Model of Device Function |
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244 | (3) |
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247 | (20) |
References |
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267 | (10) |
Bibliography |
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277 | (2) |
Index |
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279 | |