From pp. 15-16
Researchers posit that explanations in words and
pictures, as opposed to words or pictures, make for increased comprehension
(Mayer, 2001) for the learner.
DaleÕs ÒCone of ExperienceÓ (1946, 1996) provides evidence of these phenomena. DaleÕs research suggested that increasing the modalities by which content was presented could
increase retention rates.
Wiman and Mierhenry (1969) extended DaleÕs concept to conclude that people will generally remember
¥10 percent of what they read
¥20 percent of what they hear
¥30 percent of what they see
¥50 percent of what they hear and see