Complex sentence: Social information processing theory (SIP) is an interpersonal communication theory developed by Joseph Walther in 1992 explaining how people get to know one another online, without nonverbal cues, and how they develop and manage relationships in the computer-mediated environment.
Split into simpler sentences: Social information processing theory (SIP) is an interpersonal communication theory developed in 1992 by Joseph Walther. This theory explains how people get to know one another online without nonverbal cues, and how they develop and manage relationships in a computer-mediated environment.