1Mayer R E. The cambridge handbook of multimedia learning. New York: Cambridge University Press, 2005.
2Mayer R E, Sobko K, Mautone P D. Social cues in multimedia learning: Role of speaker's voice. Journal of Educational Psychology, 2003, 95(2): 419-425.
3Sweller J. Cognitive load theory, learning difficulty, and instructional design. Learning and Instruction, 1994, 4:295-312.
4Craig S D, Gholson B, Driscoll D M. Animated peda- gogical agents in multimedia educational environments: Effects of agent properties, picture features, and re- dundancy. Journal of Educational Psychology, 2002, 94(2) : 428-434.
5de Koning B B, Tabbers H K, Rikers R M J P, et al. Attention guidance in learning from a complex ani- mation: Seeing is understanding? Learning and In- struction, 2010, 20(2): 111-122.
6de Koning B B, Tabbers H K, Rikers R M J P, etal. Attention cueing in an instructional animation: The role of presentation speed. Computers in Human Be- havior, 2011, 27(1): 41-45.
7Underwood G, Jebbett L, Roberts K. Inspecting pic- tures for information to verify a sentence: Eye move- ments in general encoding and in focused search. The Quarterly Journal of Experimental Psychology: Human Experimental Psychology, 2004, 57 (1) : 165-182.
8Paas F struetio effort 1993, , Van Meienboer hal conditions: An and performance 35:737-743 J J G. The efficie approach to comb measures. Human ncy of in- ine mental Factors,.
9Rayner K. Eye movements in reading and informationprocessing: 20 years of research. Psychological Bul- letin, 1998, 124(3): 372-422.
10Garner R. Metacognition and reading comprehension. Norwood, NJ: Ablex, 1987.
