Evidence that a character is to blame (include Act. Scene. Line):
--Capulet: “Content thee, gentle coz, let him [Romeo] alone./…Verona brags of him/ To be a virtuous and well-governed youth./ I would not for the wealth of all this town/ Here in my house do him disparagement./ Therefore be patient; take no note of him” (1. 5. 68-73).   
-Tybalt sees Romeo at the party and wants to kill him
-Capulet says…
-Capulet is to blame because….

Evidence that Romeo’s or Juliet’s underdeveloped prefrontal cortex is to blame (include Act. Scene. Line):
-->Romeo: “ I fear too early; for my mind misgives/ Some consequence yet hanging in the stars/ Shall bitterly begin his fearful date…/ By some vile forfeit of untimely death. / But he that hath the steerage of my course / Direct my sail!” (1. 4. 107-113). 


--> Romeo: “Did my heart love till now? Foresweare it sight!/ For I never saw true beauty till this night” (1. 5. 54-55)