Omega Preceder is a term used in the field of psychology to refer to a person's ability to anticipate and prepare for future events. PSI, the three-letter acronym for this term, stands for 'Preparedness for Stressful Interactions'. This term is used to describe an individual's capacity to recognize and respond to potential stressors in their environment. Omega Preceder is a concept that has been studied extensively in the field of psychology, as it is believed to be an important factor in determining an individual's overall psychological well-being.