Editing Personalization Principle (section)

=== Challenges ===
Although research on personalized messages in a variety of interactive and non-interactive multimedia settings has shown significant improvements in transfer scores than multimedia environments with formal messages (Moreno & Mayer, 2000, 2004), sensitive procedures in  measuring subjects cognitive load has been lacking. One of the  Design-A-Plant experiments by Moreno & Mayer (2004) did find that  participants of the personalized message group had reported significantly lower levels of perceived cognitive load, than students of the non personalized group (d=0.67), however there could have been other underlying factors that had brought about these results. In any case, more research should be carried out that involves sensitive procedures for measuring generative, extraneous, and essential processing, in the aim to provide more evidence that personalized messages lead to significantly less cognitive processing than formal messages in multimedia environments.