Two experiments were conducted to see if teaching poor readers to use inner speech could improve their reading and writing. In the first experiment, there were 8 third grade children, 4 in the experimental group and 4 in the control one, matched from a pre-test of reading. In the experiment group, the children were trained to use inner speech in 27 tasks, from explicit self-speech of the adult and of the child to implicit self-speech by the child alone. The results show significant differences between the two groups in the post-test of reading. In the second experiment, there were 6 students in second grade, 3 in the experimental group and 3 in the control one. In the experimental group, the children were trained to use inner speech in 18 tasks: 6 cognitive tasks that do not require short term memory as in the first experiment, 6 reading tasks, 6 writing tasks. In the experimental group, the children were trained to use self-speech to process the tasks whereas, in the control group, the adult's hell was mostly visual. The results were that the experimental group succeeded significantly better in the post-tests of reading and writing.
