Before revision: Hattie himself admitted that of the two statistics in Visible Learning, one was calculated incorrectly throughout the book.John Hattie admits that half of the Statistics in Visible Learning are wrongTopphol, Arne Kåre.
After revision: Hattie himself admitted that half of the statistics in Visible Learning, were calculated incorrectly throughout the book.John Hattie admits that half of the Statistics in Visible Learning are wrongTopphol, Arne Kåre.