Mobilityâfrequent standing, walking, stooping, bending, climbing stairs, driving; constant use of a computer; occasional use of a firearm; Liftingâable to lift 50 pounds; Visualâconstant overall vision; constant color perception, constant eye-hand coordination; constant depth perception; frequent reading/close-up work; constant field of vision/peripheral; Dexterityâfrequent repetitive motion and reaching; Hearing/Talkingâconstant requirement to hear normal speech; constant hearing on telephone and radio; ability to hear faint sounds; constant talking on telephone/radio; Emotional/Psychologicalâpotential contact with hostile individuals; exposure to emergency situations; may be exposed to trauma, grief and death; frequent public contact; decision-making and concentration; Special Requirementsâsome assignments may require working weekends, nights, and/or occasional overtime; Environmentalâoccasional exposure to varied weather conditions. Principles of written and oral communication including a thorough knowledge of language mechanics, syntax, and composition; principles and methods of logic and data organization; mathematics, basic statistics and research methods; principles and theories of sociology and psychology, particularly those related to assessment and adjustment of adult and juvenile personality development, behavior patterns and motivation; group and family dynamics; basic interviewing and investigation techniques; basic social casework practice, educational norms, treatment modalities and crisis intervention; basic concepts of law enforcement as well as probation and court practices; basic knowledge of socio-economic, psychosocial, and cultural influences on individual behavior.