In what scenario are aided symbols likely preferred?

Aided symbols are preferred in scenarios where portability is not a concern because these symbols typically refer to communication systems or devices that require specific tools or equipment for interaction, such as speech-generating devices or symbol boards. When the user has the luxury of having these tools available at all times and is not restricted by the need to move quickly or inconspicuously, aided symbols can be an effective choice.

In contexts where immediate communication is essential, users may favor unaided symbols, such as gestures or vocalizations, as they can be executed quickly without needing to retrieve an aided tool. For users who are visually impaired, aided symbols may not be the most accessible choice since they rely on visual recognition. Likewise, for communication goals that are more abstract, aided symbols might not always provide the depth or flexibility needed in spontaneous conversations, where unaided symbols or natural gestures could be more useful. Thus, the situation where aided symbols are likely preferred is when portability is not an issue, enabling users to utilize more complex communication tools without the constraints of their immediate environment.