Gruit was a combination of herbs, commonly including sweet gale (Myrica gale), mugwort (Artemisia vulgaris), yarrow (Achillea millefolium), ground ivy (Glechoma hederacea), horehound (Marrubium vulgare), and heather (Calluna vulgaris).
Introvert and extravert. Introvert and extravert, basic personality types according to the theories of the 20th-century Swiss psychiatrist Carl Jung.
Hans Eysenck rejected the idea that there are âtiersâ of personality traits, theorizing instead that there are just three traits that describe human personality. These traits are extroversion, neuroticism, and psychoticism. Extroversion and neuroticism provide a two-dimensional space to describe individual differences in behavior.