What characteristic is often associated with unaided symbols?

Unaided symbols are typically associated with systems of communication that do not require any external tools or electronic devices, making portability and accessibility a significant characteristic. Examples of unaided symbols include natural gestures, facial expressions, and spoken language, which can be employed by individuals without the need for any additional equipment.

This characteristic facilitates the immediate use of communication forms in any environment, as individuals can express their thoughts and needs without relying on technology. This contrasts with aided symbols, which do require some form of device or equipment, such as communication boards or speech-generating devices. The inherent advantage of unaided symbols is their ability to be used in a variety of settings and situations, making them highly versatile for effective communication.