American Sign Language is a complete and complex visual language. Just like spoken languages use sounds to form words, ASL uses several visual components to create meaning. These components are called parameters.
Understanding ASL parameters helps students recognize how signs are formed and how small changes in a sign can completely change its meaning. Learning these elements also improves both receptive skills and expressive clarity.
In ASL, there are five main parameters that make up every sign.
Handshape refers to the configuration or shape of the hand while producing a sign.
ASL uses many different handshapes. Some signs share the same handshape, while others use completely different ones.
For example:
APPLE
CANDY
COOKIE
These signs all use a handshape produced near the mouth area.
Changing the handshape can create a completely different sign.
Location refers to where the sign is produced on or near the body.
Some signs occur near the head, while others are produced near the chest, torso, or in neutral signing space.
For example:
MOTHER – signed near the chin
FATHER – signed near the forehead
Although these signs use the same handshape and movement, the location changes the meaning.
Movement describes how the hands move while forming a sign.
Movement can include:
• tapping
• sliding
• circular motion
• repeated movement
A famous example of movement differences is:
SIT
CHAIR
Both signs use the same handshape and location, but SIT uses one movement while CHAIR uses a repeated movement.
This small change creates a new meaning.
Palm orientation refers to the direction the palm faces while signing.
The palm may face:
• up
• down
• inward
• outward
• sideways
Changing the palm orientation can sometimes change the meaning of a sign or affect how clearly it is understood.
Non-manual signals include facial expressions, head movement, and body movement.
These signals play an important role in ASL grammar and meaning.
For example, facial expressions can show:
• questions
• emotions
• intensity
• grammatical information
Without non-manual signals, many signs would lose important meaning.
Understanding parameters helps students see that ASL is structured and systematic, just like any other language.
Small changes in a parameter can create a completely different sign. Because of this, paying attention to detail is very important when learning ASL.
When students recognize these patterns, they become better at:
• recognizing signs quickly
• producing clearer signs
• understanding how ASL works
A minimal pair occurs when two signs differ by only one parameter.
These pairs are useful for understanding how small changes affect meaning.
Examples include:
SIT / CHAIR
SUMMER / DRY
MOTHER / FATHER
Studying minimal pairs helps students see how ASL signs are built.
One of the best ways to learn parameters is to compare signs and look for differences.
When you examine signs closely, you begin to notice patterns in handshape, location, movement, and palm orientation.
These patterns help you better understand the structure of ASL.
Now that you understand the five parameters of ASL, try applying your knowledge.
In the Odd One Out activity, you will see four ASL vocabulary words. Three of the signs share the same parameter, while one sign is different.
Your task is to identify the sign that does not belong.
This activity helps you practice recognizing how parameters influence the meaning and structure of ASL signs.