Videos revolutionized learning but not always for the better. What does the science say? Mayer’s now-classic principles show that true innovation comes from cognitive science, not just flashy media.
The redundancy principle always surprises people when I mention it. Everyone asumes more repetition equals better retention, but the visual channel overload is real. I've seen so many corporate trainings violate this by having identical text on slides while the narrator reads it verbatim, no wonder peoples eyes glaze over.
I can relate! I think it has to do with the fact that the presenter really wants to be absolutely sure that the information gets across so they repeat it. But, as a learner/viewer the effect is clearly the opposite! The potential conflict with accessibility is an interesting topic of debate, in any case.
The redundancy principle always surprises people when I mention it. Everyone asumes more repetition equals better retention, but the visual channel overload is real. I've seen so many corporate trainings violate this by having identical text on slides while the narrator reads it verbatim, no wonder peoples eyes glaze over.
I can relate! I think it has to do with the fact that the presenter really wants to be absolutely sure that the information gets across so they repeat it. But, as a learner/viewer the effect is clearly the opposite! The potential conflict with accessibility is an interesting topic of debate, in any case.