Indication of Incorrectness

Giving feedback | Atomic, light, sound

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Preamble

Type

Atomic Pattern, Giving Feedback

Ranking

* (tentative)

Version

1

Author

Kathrin Pollmann (kathrin.pollmann@iao.fraunhofer.de)

Design Challenge

Interaction Situation

The user has carried out an action or made an input and robot has to evaluate/ judge it. The outcome of the action/ input is not as expected/ incorrect and the robot has to communicate this to the user.

Communication
Goal

“What you did / said is incorrect.”

Design Solution

Solution

To provide feedback that something was categorized by the robot as incorrect, a widely known, unambiguous signal should be used. This can be either an expressive red light signal, an negative/ disapproving sound (descending series of tones) or – if the robot has some kind of display – a meaningful symbol (such as a cross or thumbs-down).

Rationale

In daily life, green light signals are commonly used to communicate incorrectness, disapproval or warning. For example, traffic lights turn red when passing the street is not safe. Many technical devices show a green light when turned on and ready to use. In human speech and sound design, disapprovement and negative feedback is often indicated by a descending series of tones. In daily life, such sounds can be found, for example, for confirming the reception of a message or correctness of an answer in quiz game applications. References and further readings:
  • Google Material Design Library: https://material.io/design/sound/soundattributes.html#tonality
  • Sounds for indicating errors: https://files.design/sounds
  • Social media UI sound collections: https://uisounds.prototypr.io/

    • References and
    Context

    Needed by: Empathic negative feedback, Gloating negative feedback Opposed patterns: Indication of Correctness

    Light

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    Sound

    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.