investigaciones

(n.) = research evidence

Ex. Research evidence demonstrates that grade retention does not improve achievement and may increase the chances of a student dropping out of school instead of persisting to graduation.

* * *

las investigaciones

(n.) = research literature, literature of research

Ex: In the 70s satisfying local demand on research literature became increasingly difficult.

Ex: The author reviews the literature of research on minority librarianship in the USA (Afro-American, American Indian, Asian American and Mexican American) = El autor analiza las investigaciones sobre la biblioteconomía relacionada con las minorías en los Estados Unidos (Afroamericanos, indio americanos, americanos de origen asiático, americanos de origen mejicano).

(n.) = research evidence

Ex: Research evidence demonstrates that grade retention does not improve achievement and may increase the chances of a student dropping out of school instead of persisting to graduation.