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.
cut down cattell's theory by trimming the 16 traits to 2 independent superfactors- introversion-extroversion and neuroticism- later added psychoticism- lack of empathy and antisocial behaviors. had biological basis for each of the superfactors- introversion and extroversion dependent on cortisol for arousal and autonomous NS implicated with ...