paper available at researchgate and academia.edu

I've discussed with people on researchgate about what causes speech problems and looked at some speech pathology lecture  notes. Then i rearranged my research around the question of what do we do if people are aware that they have speaking difficulties vs if they are not aware. heren is an excerpt of my new paper

There are two classes of people with speech challenges,
the first class consists of those who had trouble speaking
since birth. They are aware of the fact they are more
challenging to understand. One hypothesis on speaking
challenges is the disorder is more prevalent in children
because they are overwhelmed by the conceptualizing and
the formatting tasks of language. Bell Labs engineer Robert
Lucky estimated the cortex cannot take more than 50 bits
per second. Mihaly Csikszentmihalyi estimated one
apperception to take 1/15th of a second or 105 bits per
second. Regardless of the figure a person has limited
bandwidth or computing power. Because it takes a lot of
concentration to come up with metaphors and categorize
ideas with words, the quality of speech declines. Along
with this speech has limited prosody referred to in this
paper as words per minute, pitch variance, and stress of
syllables. With the knowledge that they can be
unintelligible, they compensate using repetition or choose
words that does not contain the element that they have
trouble with. They may do these substitutions or
repetitions unconsciously. People with speech aphasia
often have trouble with pronouns. A goal of Clear Audio is
to find the use of pronouns and the repetition by using
summarizing tools. These methods are discussed in section
2. Other people have difficulty speaking later in life due to
a stroke may be confident that their pronunciation is the
same as it was before their decline and may not
incorporate either repetition or choice of words. The
second case is discussed in section 3.