Copyright Â© by The McGraw-Hill Companies, Inc. McCulloch v. Maryland 1. McCulloch v. Maryland. John Marshall. OVERVIEW. McCulloch v. Maryland established the basis for the expansive authority of the U.S. Congress. The Supreme Court held that the necessary and proper clause of the U.S.
Medical Definition of ambivert. : a person having characteristics of both extrovert and introvert.
The typical introvert is shy, contemplative, and reserved and tends to have difficulty adjusting to social situations. Excessive daydreaming and introspection, careful balancing of considerations before reaching decisions, and withdrawal under stress are also typical of the introverted personality.