See also:

• PSYCHOPHYSICS (from Gr. ifivXil, soul, 4uvcs, nature)

PSYCHOPHYSICS (from Gr. ifivXil, soul, 4uvcs, nature)  , a See also:

• DEPARTMENT (Fr. departement, from departir, to separate into parts)

department of See also:

• PSYCHOLOGY
• PSYCHOLOGY (>Guxrl, the mind or soul, and X yos, theory)

psychology which deals with the physiological aspects of See also:

• MENTAL

mental phenomena, and in particular investigates the quantitative relations between stimuli and the resultant sensations . Following the introspective school of which the last See also:

• LEADER, BENJAMIN WILLIAMS (1831– )

leader was See also:

• ALEXANDER
• ALEXANDER (1461-1506)
• ALEXANDER (ALEXANDER OF BATTENBERG) (1857-1893)
• ALEXANDER (ALEXANDER OsxENOVici) (1876-1903)
• ALEXANDER, ARCHIBALD (1772—1851)
• ALEXANDER, FRANCIS (1800—1881)
• ALEXANDER, GEORGE (1858— )
• ALEXANDER, JOHN WHITE (1856- )
• ALEXANDER, JOSEPH ADDISON (18o9—186o)
• ALEXANDER, SIR JAMES EDWARD (1803—1885)
• ALEXANDER, WILLIAM (1824— )
• ALEXANDER, WILLIAM LINDSAY (1808—1884)

Alexander See also:

• BAIN, ALEXANDER (1818-1903)
• BAIN, ANDREW GEDDES (1797-1864)

Bain, the tendency of psychological investigation, in the hands of See also:

• FECHNER, GUSTAV THEODOR (1801-1887)

Fechner, See also:

• HELMHOLTZ, HERMANN LUDWIG FERDINAND VON (1821-1894)

Helmholtz, See also:

• WUNDT, WILHELM MAX (1832— )

Wundt, See also:

• MUNSTERBERG
• MUNSTERBERG, HUGO (1863– )

Munsterberg, was predominantly psychophysical, and psycho-logical study, especially in See also:

• GERMANY
• GERMANY (Ger. Deutschland)

Germany, where the first fully-equipped laboratory was set up in See also:

• LEIPZIG

Leipzig (1879) by Wundt, and in See also:

• AMERICA

America became largely a See also:

• MATTER

matter of experiment and apparatus . Such apparatus has been devised for See also:

• OPTICAL

optical, acoustical, haptical (Gr . Cis-rev, See also:

• TOUCH (derived through Fr. toucher from a common Teutonic and Indo-Germanic root, cf. " tug," " tuck," O. H. Ger. zucchen, to twitch or draw)

touch), See also:

• TASTE (from Lat. taxare, to touch sharply; tangere, to touch)

taste and See also:

• SMELL (connected etymologically with " smoulder " and " smoke ")

smell experiments . Haptical apparatus includes the kinesimeter (for cutaneous sensation), the thermaesthesiometer (for See also:

• HEAT (0. E. haktu, which like " hot," Old Eng. hat, is from the Teutonic type haita, hit, to be hot; cf. Ger. hitze, heiss; Dutch, hitte, heet, &c.)

heat and See also:

• COLD (in O. Eng. cald and ceald, a word coming ultimately from a root cognate with the Lat. gelu, gelidus, and common in the Teutonic languages, which usually have two distinct forms for the substantive and the adjective, cf. Ger. Kolte, kalt, Dutch koude

cold sensation), the algometer or algesimeter (for See also:

• PAIN (from Lat. poena, Gr. robin, penalty, that which must be paid: O. Fr. peine)
• PAIN, BARRY (1867– )

pain sensations), the aesthesiometer (e.g. those of Jastrow and Munsterberg) . Among important apparatus for measuring the See also:

• TIME (0. Eng. Lima, cf. Icel. timi, Swed. timme, hour, Dan. time; from the root also seen in " tide," properly the time of between the flow and ebb of the sea, cf. O. Eng. getidan, to happen, " even-tide," &c.; it is not directly related to Lat. tempus)
• TIME, MEASUREMENT OF
• TIME, STANDARD

time relations of mental processes are the d'See also:

• ARSONVAL

Arsonval chronometer, which marks hundredths of a second, and the Hipp chronoscope, in which the stimulus and, the See also:

• CLOCK

clock are electrically connected . For authorities see See also:

• BALDWIN, JAMES MARK (1861– )
• BALDWIN, ROBERT (1804–1858)

Baldwin's Dict. of Philos. and Psych. s.v . " Laboratory," and the latest psychological textbooks .