spicologia By ash55444 Period: 1546 to 1650 Rene Descartes Period: 1621 to 1675 Thomas Willis Period: 1632 to 1704 John Locke Period: 1734 to 1815 Franz Mesmer Period: 1745 to 1826 Philippe Pinel Period: 1758 to 1828 Franz Joseph Gall Period: 1828 to 1899 Karl Ludwig Kahlbaum Period: 1832 to 1920 Wilhelm Wundt Period: 1849 to 1936 Iván Pávlov Period: 1856 to 1926 Emil Kraepelin Period: 1856 to 1939 Sigmund Freud Period: 1857 to 1927 Vladimir Bekhterev Period: 1875 to 1961 Carl Gustav Jung Period: 1878 to 1958 John Watson Period: 1902 to 1987 Carl Rogers