* When a person is demoralized, discouraged, tired, unenthusiastic, concerned about the other person’s impression, or in a non-dominant position in a formal interaction and setting, the rate of illustrators is less than is usual for that person
* Negative feelings = fewer illustrators
* With excitement, and enthusiasm about the topic or process of communication, when in the dominant role in a formal interaction, or in a more informal interaction where there is little concern about the impression being conveyed more illustrators are used
* When difficulty is experienced in finding the right words, or when feedback from the listener suggests he is not comprehending illustrators increase
* Can fill pauses and maintain a person’s speaking turn
* Serve a self-priming function, helping the speaker past an awkwardness in their speech or thought, and accelerating the flow of her and his ideas