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. 2017 Jun 11;17(6):1359. doi: 10.3390/s17061359
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  1. Gets frightened of classmate’s yelling. Follows the watch strategy with the help of the caregiver.

  2. Temper tantrum: patting, kicking, covers his ears. Follows the strategy with the caregiver. Looks at it quietly.

  3. Gets frightened of turning off the gyms lights. Follows the strategy with the caregiver.

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  1. Dislikes wearing the watch. Manages to loosen it.

  2. Caregiver makes him wear it again. Mild complain. Watches the screen.

  3. Gets frightened of classmate’s yelling. Watches and touches once the screen.

  4. Watch gets loosened during physical activity. Complains and watches the screen. Notices the bubbles.

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  1. Complains of watch wearing. Follows the strategy with the caregiver.

  2. Gets frightened of classmate’s outburst and yelling. Looks at the screen, touches it, notices the bubbles.

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  1. Trees’ shadows scare him. Follows the strategy with the caregiver. Looks for a moment at the bubbles and the sunset.

  2. Caregiver makes him climb the gym wall bars. Gets frightened of the height. Cannot use the watch. Seems scared for a long interval of time.

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  1. Classmates move tables and chairs; the noise scares him. Looks and touches the watch’s screen. Looks at the sunset animation for a little while.

  2. Classmate’s outburst. Ignores the watch. Transition between classroom and gym seems to disturb him.

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  1. Classmate yells repeatedly. Covers his ears, looks at the screen when the watch vibrates, touches it. Looks for a while at the bubbles. Finishes the strategy.

  2. Same as (1), but switches between covering his ears and looking at the bubbles animation.

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  1. Classmate yells very often, and people enter the classroom repeatedly. Strategies are triggered repeatedly. Most of the times, he looks and touches the screen. He seldom ignores it, but seems agitated anyway.

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  1. Same as (Day 7), but ignores the watch more often. During gymnastics class, he seems more relaxed.

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  1. Classmate yells, and gets frightened of it. Follows the strategy. Keeps the bubbles on the screen for a while. Finishes the strategy.

  2. On two occasions, seeks the caregiver’s attention and points to the watch. Seems to be engaged with the bubbles.