Agency for Persons with Disabilities ; Revises definition of term "developmental disability"; defines "Tatton-Brown-Rahman syndrome"; requires level 2 employment screening for all employees of residential facilities & adult day training programs; requires agency to contract with state university to develop & administer certain surveys; provides requirements for such surveys; requires state university to submit certain report to agency by specified date; requires agency to conduct public hearings on specified information; conduct or contract for gap analysis for specified purposes; identify core competencies & performance metrics & make recommendations for standardizing assessments; & submit certain report to Governor & Legislature by specified date.