( )



:

?


(1850-1909)

- " (1850-1909)"

() (Ebbinghaus) (1850-1909), , . . - '' '' (1885); ('' '').


:
""
" (. 1920)" - ...
""
" "
"-"
""
""
" (1757-94)"
" " - ...
" (1881-1938)" - ...
" (1837-98)" - ...