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

Testing how well a product or service works.

Managing equipment and materials.

Writing computer programs.

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

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

Repairing machines or systems using the right tools.

Using equipment or systems.

Installing equipment, machines, wiring, or computer programs.

Using scientific rules and strategies to solve problems.

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

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

Figuring out how to use new ideas or things.

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

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

Looking for ways to help people.

Planning and doing the basic maintenance on equipment.

Writing things for co-workers or customers.

Talking to others.

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

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

Selecting and managing the best workers for a job.

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

Managing your time and the time of other people.

Making equipment and technology useful for customers.

Making spending decisions and keeping track of what is spent.

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

Using math to solve problems.

Reading work-related information.

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

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

Teaching people how to do something.

Bringing people together to solve differences.

Talking people into changing their minds or their behavior.

Understanding people's reactions.

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

Jumping, sprinting, or throwing something.

Using your lower back and stomach.

Exercising for a long time without getting out of breath.

Keeping your arm or hand steady.

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

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

Keeping your balance or staying upright.

Remembering words, numbers, pictures, or steps.

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

Ordering or arranging things.

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

Seeing details that are far away.

Noticing the direction that a sound came from.

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

Communicating by writing.

Communicating by speaking.

Reading and understanding what is written.

Adding, subtracting, multiplying, or dividing.

Knowing where things are around you.

Listening and understanding what people say.

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

Doing two or more things at the same time.

Lifting, pushing, pulling, or carrying.

Creating new and original ideas.

Noticing when problems happen.

Holding or moving items with your hands.

Putting together small parts with your fingers.

Exercising for a long time without your muscles getting tired.

Seeing something to your side when your are looking ahead.

Paying attention to something without being distracted.

Grouping things in different ways.

Noticing the difference between colors, including shades and brightness.

Quickly knowing what you are looking at.

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

Seeing hidden patterns.

Using rules to solve problems.

Speaking clearly.

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

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

Quickly moving your arms and legs.

Seeing details up close.

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

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

Seeing at night or under low light.

Coming up with lots of ideas.

Choosing the right type of math to solve a problem.

Recognizing spoken words.

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

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

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

Telling the difference between sounds.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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