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