<P> Experimental psychology was introduced into the United States by George Trumbull Ladd , who founded Yale University 's psychological laboratory in 1879 . In 1887 , Ladd published Elements of Physiological Psychology , the first American textbook that extensively discussed experimental psychology . Between Ladd 's founding of the Yale Laboratory and his textbook , the center of experimental psychology in the US shifted to Johns Hopkins University , where George Hall and Charles Sanders Peirce were extending and qualifying Wundt 's work . </P>
the first experimental laboratory in psychology in the united states was founded by
George Trumbull Ladd