Evaluates claimants’ medical and mental health records and evidence to determine whether a medical or mental condition meets or equals the medical criteria listed in the federal social security listing of impairments for social security disability benefit eligibility. Determines claimants’ mental residual functional capacity based on impairments/conditions and third party subjective evidence. Establishes the earliest medical onset date of claimants’ disability by reviewing the claimants’ medical and mental health records based on acceptable psychological theories, concepts, and methods, and federal social security disability rules and regulations. Provides a reasoned statement integrating social security administration disability determination principles with clinical psychology for the purpose of substantiating findings. Conducts psychological consultations with professional adjudicative staff by explaining psychological concepts, theories, and methodologies and how these relate to the mental criteria in the listing of impairments. Participates in training and staff development for new and current adjudicative staff. Performs other duties as assigned.