AO3 - Lack of research support for reduced cues theory
The theory is wrong to suggest that nonverbal cues are entirely missing from CMC. They are different rather than absent.
Walther and Tidwell (1995):
People in online interaction use other cues such as the style and the timing of the message.
There are subtle difference which can be used in CMC that are similar to FtF relationships. Acrostics such LOL, emoticons and emojis, are used as effective substitutes for facial expressions, tone of voice, portraying dislike and illness to name but a few.