With research with split-brain preparations speculation concerning hemispheric specialization and differences began to exceed the facts,the speculations include:

Question

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The speculation that tests could be devised to determine right and left brain dominance and ideas that educational practices could be employed to specifically enhance right and left brain functions are both mentioned in the statement. The other speculations, such as each hemisphere being a separate personality which we can measure, exceed the available facts and are therefore not accurate.

With Research with Split-Brain Preparations Speculation Concerning Hemispheric Specialization and Differences