Evaluating User Experience in Games: Concepts and Methods - Lirmm

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224 M. Brown et al. Table 12.9 Content analysis of gamepad comments Gamepad – categories Positive comments Negative comments Total Comfort 8 2 10 Learnable 4 3 7 Sensitivity 3 4 7 Personal preference 2 5 7 Ease of use 6 1 7 Feedback 0 3 3 Realism 1 1 2 Misc 2 0 2 Total 26 19 45 Comfort is the largest category produced and contains the most positive comments. These comments simply talk about how comfortable the gamepad is. For example: “Very comfortable. I could hold it all day long.” (Subject 3, positive) “Makes my thumb sore after playing for a while.” (Subject 1, negative) Comments in the Learnable category talk about how easy or difficult it is to get used to using the gamepad controller. For example: “Very familiar. I knew exactly how it worked within very little time” (Subject 3, positive). “Maybe if someone used this for the very first time it would be difficult to figure out” (Subject 7, negative). It is interesting to note that while several users mention this method is easy to learn, none talk about how intuitive it is, as they did with both the steering wheel and the keyboard. This may suggest that it may be familiarity with this device rather than an intuitive interface that makes learning easier. The Sensitivity comments highlight the positive and negative effects of steering, acceleration, and break sensitivity. For example: “Natural feeling, right sensitivity” (Subject 1, Positive) “The acceleration and brakes didn’t seem to work well together. It was hard to brake slightly; you had to come to a complete stop.” (Subject 11, negative) Comments in the Personal preference category discuss issues relating to control assignment setting in the game. Most of these comments are negative, perhaps representing the fact that the participants were not allowed to alter these settings during the study. For example: “Would have preferred to accelerate on the ‘trigger’ buttons” (Subject 2, negative) “The button for the break should be to the right side, not above the accelerator.” (Subject 8, negative) The Ease of use category contains comments relating the simplicity (or lack of) using this control method. Most of these comments are positive, with only a single comment stating that this device is difficult to use. For example:
12 Beyond the Gamepad 225 “Very easy to use. Actions were displayed accurately in the game. It was easy to judge how much movement/force was required.” (Subject 7, positive) “The joystick seems sometimes a little bit difficult to use.” (Subject 5, negative) In addition to highlighting some of the key issues in game controller user experience, these data have revealed an interesting trend, the mixture of positive and negative comments throughout the categories relating to all three control methods. The vast majority of categories discovered contain both positive and negative comments; this trend highlights the importance of individual differences when analyzing game controllers. What some users may see as a positive feature or aspect of a game controller, others may view in an extremely negative light. For example, when discussing the binary nature of the keyboard, one subject found it much easier to steer with, while another found the lack of sensitivity frustrating. “Easier to make incremental adjustments during steering.” (Subject 2, keyboard, positive) “Very difficult to control the strength of the control/action by simply pressing one key.” (Subject 4, keyboard, negative) 12.4.4 Combining the Results While each of the evaluations produced interesting results, a more complete picture can be gained by looking at a combination of all three measures. While a complete analysis of all the data collected falls outside the scope of this chapter, this section highlights a single issue that was reported by several of the analysis methods and explores it in more detail. The issue of controller sensitivity is one that seems to have an impact on all three components of the interaction. The user experience analysis highlighted controller sensitivity as an important aspect of experience for each of the control methods. Categories within each analysis revealed each control method’s advantages and disadvantages in terms of sensitivity. The results suggest that this aspect of the interaction was the most influential when using the steering wheel, as nine comments mentioned sensitivity as a problem. However, in terms of functionality the steering wheel is clearly superior, being sensitive to small gradations in terms of steering, acceleration, and braking. To examine this in more detail, an analysis of the data collected by the logging software for subject 1 (the subject with the best laps times using the wheel) and subject 5 (a subject with close to average lap times with the wheel) was conducted. Figure 12.2 shows the reports captured by the logging software for subjects 1 and 5, while using the gamepad and steering wheel to control the steering axis while driving the two timed laps of the track. The chart is a frequency distribution of the range of controller reports. Both controllers report a different range of values in response to movement. In order to display them all on the same X-axis scale, the data from both controllers have been normalized; –1000 is the controller axis at the extreme left; +1000 is the controller axis at the extreme right; and 0 is the center position for the controller. The Y-axis represents the total number of reports of a given value.
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Human-Computer Interaction Series E
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Regina Bernhaupt Editor Evaluating
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For Philippe
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viii Foreword Chapter 3, Presence I
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x Foreword personality which evolve
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Contents Part I Introduction to Eva
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Contributors Regina Bernhaupt IRIT,
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Contributors xvii Manfred Tscheligi
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xx About the Authors Emily Brown is
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xxiv About the Authors Christina Ko
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xxvi About the Authors MIT Media La
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xxviii About the Authors Theft Auto
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Chapter 1 User Experience Evaluatio
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1 User Experience Evaluation in Ent
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1 User Experience Evaluation in Ent
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Chapter 2 Enabling Social Play: A F
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2 Enabling Social Play 13 It is als
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