Stare-in-the-crowd effect evolved from a necessity for fast and accurate gaze perception for complex social interactions (Emery 2000). According to this model, an eye direction detector (EDD) mechanism - a neurocognitive system responsible for the rapid detection of eyes in the environment and their gaze direction – arose as a function of the geometry created by a dark circular iris relative to the white sclera (Baron-Cohen 1994). Specifically, it is contended that the increased ratio of exposed sclera in the eye outline of humans serves to enhance the velocity and acuity of gaze direction perception (Kobayashi and Kohshima 2001). Baron-Cohen, S. (1994)
His Eye Is on the Sparrow His Eye Is on the Sparrow "His Eye Is on the Sparrow" is a Gospel hymn. The song was written in 1905 by lyricist Civilla D. Martin and composer Charles H. Gabriel. It is most associated with actress-singer Ethel Waters who used the title for her autobiography. Mahalia Jackson's recording of the song was honored with the Grammy Hall of Fame Award in 2010. The theme of the song is inspired by the words of David in the Psalms and Jesus in the Gospel of Matthew in the Bible: "I will instruct thee and teach thee in the way which