I am currently working with a number of dyslexic adults ranging in age from 19 to 54. Prior to developing an individual learning plan for each of them, we conduct a short interview to help understand their backgrounds and any other issues. One of the key areas we discuss is their schooling experience.
It is quite interesting, because the older adults have quite painful memories of their school time and recount very vivid stories of extremely low self-esteem and self-worth. These older adults do not recall having any support whilst at school, and for some the support they are currently receiving is the first since they left school. They also tend to be quite reserved when talking about dyslexia and prefer 1-2-1 session than group sessions.
However, the younger adults, who may have had support whilst at school, have a more open attitude about their dyslexia - indeed, they have been actively seeking additional support because someone has taken the trouble to explain about their learning difficulties - and also do not seem to mind small group sessions.
I feel that there is also a generational aspect to this question with older learners having very low self-esteem because they, typically, are less informed about dyslexia. Whilst the younger ones have quite good self-esteem brought about by having their dyslexia identified and being much more informed about learning strategies and strengths of dyslexic learners.