July 20


1773 

Luigi Rolando was born.  Rolando carried out early explorations of localization of brain functions and was among the first to electrically stimulate the brain.  Many of his functional assignments are now known to be incorrect, but his influence guided research in productive directions.

1850 

Georg E. Müller was born.  Müller conducted the first experimental study of attention (1873), investigated psychophysics through systematic studies of weight judgments, developed a theory of color vision, and discovered the importance of internal processes (e.g., preparatory set) that affect memory.

1885 

The first state mental hospital in Utah, Utah State Hospital, was opened for the admission of patients.  The hospital was located in Provo, Utah Territory.  The institution had been authorized by the territorial government on February 20, 1880.  Walter Pike served as the first superintendent.
1950 The first Annual Review of Psychology was published.  Calvin P. Stone was the editor of the volume and the first article was Growth,Development, and Decline, "by Harold E. Jones and Nancy Bayley."