A detailed job description for speech-langauge therapists can be found at: http://www.bls.gov/oco/ocos099.htm

A detailed description of the scope of practice of an SLP can be found at: http://www.asha.org/docs/html/SP2007-00283.html

A detailed description of the scope of practice of an SLPA can be found at: http://www.asha.org/certification/faq_slpasst.htm#a1