Detailed Instructions: Given a sentence in Igbo language, translate the sentence to English language keeping the meaning of the original sentence intact
Q: Igbo sentence: Lee Shadish, Cook, and Campbell (2001) n'ihi na a z zuru ezu n'akuk ihe mere eme na a ikpachara anya elaboration nke mgbak na mwepu gwugwu ndaba, esitidem ndaba, ru ndaba, na mpuga ndaba.
A:
See Shadish, Cook, and Campbell (2001) for a more detailed history and a careful elaboration of statistical conclusion validity, internal validity, construct validity, and external validity.