CERTAIN GENERAL FEATURES CHARACTERIZE TYPICAL APPLICATIONS OF SIMULTANEOUS EQUATION MODELS IN SOCIOLOGY: (1) MODELS USUALLY CONSIST OF A SET OF EQUATIONS THAT POSSESS A RANDOM DISTURBANCE OR ERROR TERM TO SUMMARIZE THE INFLUENCE OF UNMEASURED OR UNKNOWN VARIABLES ON THE MECHANISM OF INTEREST; (2) VARIABLES OF SOCIOLOGICAL MODELS ARE TYPICALLY NOT FUNCTIONS OF TIME; (3) MOST MODELS RULE OUT TWO-WAY CAUSATION AMONG SYSTEM VARIABLES; (4) MOST SIMULTANEOUS EQUATION MODELS ARE LINEAR IN VARIABLES AND DISTURBANCES; (5) MOST SOCIOLOGICAL MODELS IMPOSE THE ASSUMPTION THAT DISTURBANCE TERMS ARE CONTEMPORANEOUSLY INDEPENDENT; AND (6) IT IS ASSUMED GENERALLY THAT SYSTEM VARIABLES ARE MEASURED WITHOUT ERROR. ISSUES OF CONCERN IN SIMULTANEOUS EQUATION MODELS ARE IDENTIFICATION, PARAMETER ESTIMATION, AND HYPOTHESIS TESTING. SUPPORTING EQUATIONS AND EXAMPLES THAT ILLUSTRATE SUBSTANTIVE APPLICATIONS OF SIMULTANEOUS EQUATION MODELS ARE GIVEN. (DEP)