| Arithmetic estimation competence, as an important part of the mathematical ability, cannotbe replaced when we are solving problems. And estimating strategy is widely used when we aremaking decisions. Therefore, the exploring on the factors that influence individuals to usebetween different strategies helps us to implement targeted trainings to improve individualmathematical cognitive ability, and also can be useful for normal development individuals to geta good learning ability about estimation. Until now, most of the researchers have spent theirattention on how central executive component affect the adaptive use of strategies. However, inprevious studies, estimate task is rarely used to study selection mechanisms of cognitivestrategies of arithmetic, rather than mental arithmetic. The discussion on the separable andexecutive function of the central executive started to become the focus of attention. It has beenshown that the central executive function conversion capabilities have something to do withindividual performance on arithmetic cognitive strategies. It’s the estimation on digital formwhich we skillfully mastered in our practical teaching. But in real life, we will encounter a varietyof estimates. Whether the presentation of the tasks to be estimated have an impact on the use andimplementation of estimating has been rarely studied.In this study, using the choice/no choice operand-recognition paradigm combining eitheroperand-recognition paradigm, they can learn more from each operand level individuals in theselection and implementation of strategy of individualdifferences affect strategies used. Moreimportantly, the operand-recognition paradigm caused conversion price can be more accurate,multiplication estimated conversion capability as we examine the strategies used to provideavenues of research. In addition, eye movement technology to uncover the physiologicalmechanisms in the policy process of applying the normal development of adult subjectscombined technical depth conversion capacity arithmetic estimation strategy selection of eyemovement, while the arithmetic skills as a covariate presented stimuli to explore the impact of the conversion ability of individual strategies used in two different ways (clock and number). Thefollowing conclusions:(1) The effects of two ways of presentation on estimation strategy use are different.Compared with the digital presentation, Clock presentation is not dominant in the strategyexecution, but predominate in the strategy selection.(2)The eye movement patterns of estimation strategy choice of different presentation aredifferent. The presentation affect fixation duration and fixation times of the strategy choice ofmultiplier processing, the fixation duration and fixation times of clock presentation is greater thanthe number presentation.(3)The effects of different processing level on strategy use are different. Switching functionaffect on strategy execution, baseline level of performance is better than manipulate level,however, switching function don’t affect on strategy selection.(4)The eye movement patterns of strategies use are different on different processing levels.Switching function don’t affect the fixation times but affected the fixation duration of interestedareas, the manipulate level is better than the baseline level.(5)The eye movement patterns of manipulate conditions are different. On the condition ofchoice, multiplier of single-digit the fixation duration and times were greater than ten-digit, withpay more attention to the single-digit in the processing, meanwhile, on the condition of no choice,multiplier of ten-digit the fixation duration and times were greater than single-digit, with paymore attention to the ten-digit in the processing, for two conditions were compared, the fixationduration and times up-regulated both more than down-regulation. |