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Last modified by Mathieu Jung-Muller on 2022/04/04 13:52
From version Icon 114.2 Icon
edited by Sneha Lodha
on 2022/04/04 00:02
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To version Icon 113.1 Icon
edited by Mathieu Jung-Muller
on 2022/04/03 20:00
Change comment: There is no comment for this version

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1 -XWiki.snehalodha
1 +XWiki.Mathieu
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186 186  
187 187  == Results ==
188 188  
189 -The following sections contains the results gather from the affect and system assessment. Apart from the printed version being included below, the results are also included as interactive graphs. To get a better version with more information (data point information on mouse hovering for instance), simply click the provided link for each graph.
189 +We produced our results as interactive graphs. Only a printed version is shown below. To get a better version with more information (data point information on mouse hovering for instance), click the provided link for each graph.
190 190  
191 191  === Affect assessment ===
192 192  
193 193  [[Affect assessment, interactive version>>https://pietro99.github.io/SCE/graphs/mood_questionnaire.html]]
194 194  [[image:mood.svg]]
195 -Figure 1: Graphical results of affect assessment before and after conducting the evaluation activity with Pepper.
196 196  
197 197  {{html}}
198 198  <!DOCTYPE html>
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218 218  </head>
219 219  <body>
220 220  
221 -<h6><strong>Wilcoxon Signed-rank test</strong><i>H0</i>: The mood distribution before and after the interaction with Pepper is the same.</h6>
220 +<h5>Wilcoxon Signed-rank test</h5>
221 +<h6><i>H0</i>: The mood distribution before and after the interaction with Pepper is the same.</h6>
222 222  
223 223  <table>
224 224   <tr>
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255 255  </html>
256 256  {{/html}}
257 257  
258 -Table 1: Results of wilcoxon statistical test on affect assessment
258 +The hypothesis H0 is that Pepper does not have any effect. In this case, the questionnaires 1 and 2 should give the exact same values for each of the six feelings. However, the graphs and table below show that there is a slight increase regarding positive feelings, and a sligt decrease as well regarding negative feelings.
259 +There are however many biases in these results. The main one that we isolated is that the activity of gardening itself could lead to the mood improvement. For this reason, we made subgroups based on whether the participants liked gardening or not.
259 259  
260 -We analyzed the participants' moods before and after the interaction with Pepper in order to be able to observe positive and negative changes that are caused by the interaction with Pepper. The hypothesis H0 is that Pepper does not have any effect, which would mean that the questionnaires 1 and 2 should give the exact same values for each of the six feelings. However, the graphs and table below show that there is a slight increase regarding positive feelings, and a slight decrease as well regarding negative feelings. The Wilcoxon Signed-rank demonstrated that the only statistically significant change happened for contentness and tiredness based on a p-value threshold of 0.05.
261 -
262 -There however exists an important source of bias in the above mentioned result. The main one that we isolated is that the activity of gardening itself could lead to the mood improvement. For this reason, we made subgroups based on whether the participants liked gardening or not.
263 -
264 264  {{html}}
265 265  <!DOCTYPE html>
266 266  <html>
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285 285  </head>
286 286  <body>
287 287  
288 -<h6><strong>Wilcoxon Rank-Sum test</strong><i>H0</i>: The mood distribution after the interaction with Pepper for people who like gardening and people who do not like gardening is the same.</h6>
285 +<h5>Wilcoxon Rank-Sum test</h5>
286 +<h6><i>H0</i>: The mood distribution after the interaction with Pepper for people who like gardening and people who do not like gardening is the same.</h6>
289 289  
290 290  <table>
291 291   <tr>
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322 322  </html>
323 323  {{/html}}
324 324  
323 +We did not notice any relevant pattern indicating a significant difference between "like gardening" and "dislike gardening" groups. It seems to be that this is not the cause of the mood improvement.
325 325  
326 -In order to analyze the difference in the mood change between people who liked the activity of gardening and people who did not, we divided the assessments into two groups and performed a Wilcoxon Rank-Sum test. The results show that only the contentness mood shows a statistically significant difference between the two groups. Hence, we did not notice any relevant pattern indicating a significant difference between "like gardening" and "dislike gardening" groups. It seems to be that this is not the cause of the mood improvement.
327 327  
328 -This confirms that PwDs can potentially benefit from a boost of energy from interacting with Pepper and, if the activity is enjoyable, a general improvement in contentness as well.
329 -
330 -
331 331  === System assessment ===
332 332  
333 333  [[System assessment, first subset of questions, interactive version>>https://pietro99.github.io/SCE/graphs/first_questionnaire_1.html]]