Castillo Alvarado, Ligia Carolina and Manzano Campos, Tania Marilin and Miranda Cordero, Daniela Miladis (2018) Physical and motivational factors that affect students´ focus and concentration in class on students´ of the B.A in Modern Languages Specialization in French and English in the English intermediate II Course, semester I, 2017. Bachelor thesis, Universidad de El Salvador.