Given what we know, we can confirm that the best type of study to determine if daily reading with a parent can increase the speed at which a child learns to read independently is an experimental study.
First, one must design an experiment, in this case, it can be to allow the child to read alone for a week, then measure reading speed. Then repeat this while reading with a parent and measure the speed again. After 2 weeks, compare the results.
Therefore, with an experimental study, one can test the reading speed of the child and determine if it increases when reading with a parent.
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