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.
There are many different theories in explaining personality. Dispositional theories explain the relationship between traits and personality. Two of the most well known dispositional theories are Allportâs Psychology of the Individual Theory and Trait and Factor Theories. Gordon Allport, Hans Eysenck, Robert McCrae, and Paul Costa Jr are the more common of the dispositional theorists. The assumptions vary from those of the other theorists.