The authors tested the hypothesis that personalized messages in a multimedi
a science lesson can promote deep learning by actively engaging students in
the elaboration of the materials and reducing processing load. Students re
ceived a multimedia explanation of lightning formation (Experiments 1 and 2
) or played an agent-based computer game about environmental science (Exper
iments 3, 4, and 5). Instructional messages were presented in either a pers
onalized style, where students received spoken or written explanations in t
he 1st- and 2nd-person points of view, or a neutral style, where students r
eceived spoken or written explanations in the 3rd-person point of view. Per
sonalized rather than neutral messages produced better problem-solving tran
sfer performance across all experiments and better retention performance on
the computer game. The theoretical and educational implications of the fin
dings are discussed.