Abstract: Using the probability principle problems as the materials,two experiments had been conducted to examine the effects of the encoding of multiple examples on problem solving transfer and the process.Experiment 1 probed into the effect of variability of multiple examples combined with the different Self explanation modes on different degree transfer.Experiment 2 using the technology of think aloud,the learning activity and the characters of problem solving had been analyzed in the condition:"multiple/elicited","multiple/spontaneous","uniform/elicited","uniform/spontaneous".It is indicated that:when variability of multiple examples combined with the elicited self-explanation mode,it is beter for transfer and schema generalization.Self-explanation has the key role in understanding principle and acquiring the generalized schema.Different subjects have the different self explanation mode.

Key words: Encoding mode, Transfer, Self-explanation, Think aloud