Message :- unit 4 discussion ICS Part 1: Antecedents Resources Microsoft Word icon Attributes and Evaluation of Discussion Contributions. PDF icon Professional Communications and Writing Guide. In this Instructor Contact Session, you will hear your instructor talk about antecedents. Listen to the lecture and take notes. Then post a substantive response to the following discussion question: Why are antecedents important in understanding operant behaviors and controlling respondent behaviors? ICS Part 2: Respondent and Operant Behaviors Resources Microsoft Word icon Attributes and Evaluation of Discussion Contributions. PDF icon Professional Communications and Writing Guide. In this Instructor Contact Session, you will hear your instructor talk about respondent and operant behaviors. Listen to the lecture and take notes. Then post a substantive response to the following discussion question: How do respondent and operant behavior occur together in the case of a student''s fear of public speaking?