A nursing student says, “Little of what takes place on the behavioral health unit seems to be theory-based.” A nurse educates the student by identifying which is a common use of Sullivan’s theory on the inpatient psychiatric unit?

Structure of the therapeutic milieu of most behavioral health units

Assessment tools based on age-appropriate versus arrested behaviors

Frequent use of restraint and seclusion for behavior modification

Use of the nursing process to determine the best sequence for nursing actions