A common finding in the study of aggression is that exposure…

A common finding in the study of aggression is that exposure to television is associated with increased aggressive behavior in children. You know this relationship may not be causal because you are not sure which occurred first—watching television or being aggressive. You are questioning which of the following rules of causation?

A nurse assesses a newly admitted patient and notes fatigued…

A nurse assesses a newly admitted patient and notes fatigued muscles, reports of nausea and anorexia, irritability, and diminished deep tendon reflexes. The nurse reviews the patient’s laboratory reports, which reveal a serum chloride level of 92 mEq/L (95-108), a serum potassium level of 3.1 mEq/L (3.5-5), and a serum sodium level of 135 mEq/L (135-145). Which treatment should the nurse anticipate for this electrolyte imbalance?