, . , (1856-1939), (Boring, 1950). . . , , (Prochaska & Norcross, 1994). , . , , , - .
, , , (1822-1911). : , , (Boring, 1950). , , . , (Eysenck, 1997), . , , , , (Boring, 1950). , .
, . XIX , , , , , . . . , , . , . (Hergenhahn, 1997).
, . , , () (Hergenhahn, 1997). , , . , . , , .
|
|
, (Hergenhahn, 1997). . , , ! . , , (). . . , . - (1857-1936), , . , , (1863-1945), , , (Sheehy, Chapman & Conroy, 1997).