Figuring out how a system should work and how changes in the future will affect it.

Repairing machines or systems using the right tools.

Measuring how well a system is working and how to improve it.

Changing what is done based on other people's actions.

Bringing people together to solve differences.

Talking people into changing their minds or their behavior.

Using the best training or teaching strategies for learning new things.

Installing equipment, machines, wiring, or computer programs.

Figuring out what is causing equipment, machines, wiring, or computer programs to not work.

Selecting and managing the best workers for a job.

Writing things for co-workers or customers.

Keeping track of how well people and/or groups are doing in order to make improvements.

Planning and doing the basic maintenance on equipment.

Teaching people how to do something.

Managing your time and the time of other people.

Listening to others, not interrupting, and asking good questions.

Noticing a problem and figuring out the best way to solve it.

Deciding what kind of tools and equipment are needed to do a job.

Making spending decisions and keeping track of what is spent.

Managing equipment and materials.

Thinking about the pros and cons of different options and picking the best one.

Testing how well a product or service works.

Using math to solve problems.

Thinking about the pros and cons of different ways to solve a problem.

Figuring out what a product or service needs to be able to do.

Making equipment and technology useful for customers.

Writing computer programs.

Watching gauges, dials, or display screens to make sure a machine is working.

Using equipment or systems.

Looking for ways to help people.

Using scientific rules and strategies to solve problems.

Talking to others.

Understanding people's reactions.

Reading work-related information.

Figuring out how to use new ideas or things.

Quickly moving your hand, finger, or foot based on a sound, light, picture or other command.

Lifting, pushing, pulling, or carrying.

Exercising for a long time without your muscles getting tired.

Keeping your balance or staying upright.

Creating new and original ideas.

Listening and understanding what people say.

Paying attention to one sound while there are other distracting sounds.

Keeping your arm or hand steady.

Noticing the difference between colors, including shades and brightness.

Communicating by writing.

Noticing when problems happen.

Seeing details up close.

Deciding which thing is closer or farther away from you, or deciding how far away it is from you.

Paying attention to something without being distracted.

Holding or moving items with your hands.

Quickly changing the controls of a machine, car, truck or boat.

Using your arms and/or legs together while sitting, standing, or lying down.

Quickly deciding if you should move your hand, foot, or other body part.

Changing when and how fast you move based on how something else is moving.

Coming up with lots of ideas.

Choosing the right type of math to solve a problem.

Recognizing spoken words.

Seeing hidden patterns.

Telling the difference between sounds.

Quickly comparing groups of letters, numbers, pictures, or other things.

Making fast, simple, repeated movements of your fingers, hands, and wrists.

Quickly moving your arms and legs.

Exercising for a long time without getting out of breath.

Seeing at night or under low light.

Speaking clearly.

Using rules to solve problems.

Quickly knowing what you are looking at.

Communicating by speaking.

Remembering words, numbers, pictures, or steps.

Imagining how something will look after it is moved around or changed.

Grouping things in different ways.

Noticing the direction that a sound came from.

Reading and understanding what is written.

Making general rules or coming up with answers from lots of detailed information.

Ordering or arranging things.

Bending, stretching, twisting, or reaching with your body, arms, and/or legs.

Seeing something to your side when your are looking ahead.

Quickly and repeatedly bending, stretching, twisting, or reaching out with your body, arms, and/or legs.

Seeing details that are far away.

Jumping, sprinting, or throwing something.

Using your lower back and stomach.

Knowing where things are around you.

Doing two or more things at the same time.

Putting together small parts with your fingers.

Moving your arms, legs, and mid-section together while your whole body is moving.

Adding, subtracting, multiplying, or dividing.

Seeing something even if there is a glare or very bright light.

Knowledge of the structure and content of the English language including the meaning and spelling of words, and rules of composition and grammar.

Knowledge of arithmetic, algebra, geometry, calculus, statistics, and their applications.

Knowledge of the chemical composition, structure, and properties of substances and of the chemical processes and transformations that they undergo. This includes uses of chemicals and their interactions, danger signs, production techniques, and disposal methods.

Knowledge of the information and techniques needed to diagnose and treat human injuries, diseases, and deformities. This includes symptoms, treatment alternatives, drug properties and interactions, and preventive health-care measures.

Knowledge of principles and methods for showing, promoting, and selling products or services. This includes marketing strategy and tactics, product demonstration, sales techniques, and sales control systems.

Knowledge of the practical application of engineering science and technology. This includes applying principles, techniques, procedures, and equipment to the design and production of various goods and services.

Knowledge of media production, communication, and dissemination techniques and methods. This includes alternative ways to inform and entertain via written, oral, and visual media.

Knowledge of raw materials, production processes, quality control, costs, and other techniques for maximizing the effective manufacture and distribution of goods.

Knowledge of machines and tools, including their designs, uses, repair, and maintenance.

Knowledge of group behavior and dynamics, societal trends and influences, human migrations, ethnicity, cultures, and their history and origins.

Knowledge of historical events and their causes, indicators, and effects on civilizations and cultures.

Knowledge of relevant equipment, policies, procedures, and strategies to promote effective local, state, or national security operations for the protection of people, data, property, and institutions.

Knowledge of the theory and techniques required to compose, produce, and perform works of music, dance, visual arts, drama, and sculpture.

Knowledge of principles and methods for moving people or goods by air, rail, sea, or road, including the relative costs and benefits.

Knowledge of administrative and office procedures and systems such as word processing, managing files and records, stenography and transcription, designing forms, and workplace terminology.

Knowledge of techniques and equipment for planting, growing, and harvesting food products (both plant and animal) for consumption, including storage/handling techniques.

Knowledge and prediction of physical principles, laws, their interrelationships, and applications to understanding fluid, material, and atmospheric dynamics, and mechanical, electrical, atomic and sub-atomic structures and processes.

Knowledge of principles and methods for describing the features of land, sea, and air masses, including their physical characteristics, locations, interrelationships, and distribution of plant, animal, and human life.

Knowledge of principles and procedures for personnel recruitment, selection, training, compensation and benefits, labor relations and negotiation, and personnel information systems.

Knowledge of principles and processes for providing customer and personal services. This includes customer needs assessment, meeting quality standards for services, and evaluation of customer satisfaction.

Knowledge of plant and animal organisms, their tissues, cells, functions, interdependencies, and interactions with each other and the environment.

Knowledge of different philosophical systems and religions. This includes their basic principles, values, ethics, ways of thinking, customs, practices, and their impact on human culture.

Knowledge of principles and methods for curriculum and training design, teaching and instruction for individuals and groups, and the measurement of training effects.

Knowledge of the structure and content of a foreign (non-English) language including the meaning and spelling of words, rules of composition and grammar, and pronunciation.

Knowledge of laws, legal codes, court procedures, precedents, government regulations, executive orders, agency rules, and the democratic political process.

Knowledge of principles, methods, and procedures for diagnosis, treatment, and rehabilitation of physical and mental dysfunctions, and for career counseling and guidance.

Knowledge of business and management principles involved in strategic planning, resource allocation, human resources modeling, leadership technique, production methods, and coordination of people and resources.

Knowledge of transmission, broadcasting, switching, control, and operation of telecommunications systems.

Knowledge of economic and accounting principles and practices, the financial markets, banking, and the analysis and reporting of financial data.

Knowledge of circuit boards, processors, chips, electronic equipment, and computer hardware and software, including applications and programming.

Knowledge of materials, methods, and the tools involved in the construction or repair of houses, buildings, or other structures such as highways and roads.

Knowledge of human behavior and performance; individual differences in ability, personality, and interests; learning and motivation; psychological research methods; and the assessment and treatment of behavioral and affective disorders.

Knowledge of design techniques, tools, and principles involved in production of precision technical plans, blueprints, drawings, and models.