NATIONAL SPEECH & DEBATE ASSOCIATION
ARGUMENT CONSTRUCTION
Elements of an Argument
Arguments may take many forms, but successful arguments share a specific set of elements. A complete
argument contains:
a claim, or the basic idea of the argument;
a warrant, or an explanation why the claim is true;
data, or evidence; and
an impact, or a reason why the argument is important.
These elements should be present in all forms of argumentation. They are especially important in verbal
argumentation because the audience must be able to follow the argument. In written argumentation,
readers may absorb and process the argument at their own pace; if they are confused, they can reread a
passage or sentence.
Structure of an Argument
Claim The main point of the argument; what the debater
seeks to prove true.
Warrant The logical justification for the claim; why the
claim is true.
Data The information or evidence used to bolster the
warrant.
Impact The reason the argument should matter to the
audience.
Example of Each Element of an Argument
Claim Legalizing marijuana will increase government
revenues.
Warrant Governments can place taxes on legalized
marijuana.
Data Business Week, March 29, 2009—Legalized
marijuana, if sold in stores at the same prices as
sold on the street, would yield $40 to $100 billion
in new tax revenue.
Impact In a country where both federal and state
governments run massive deficits, and where
programs from welfare to education are being cut
across the board, we need to do whatever we can
to increase revenue streams.
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NATIONAL SPEECH & DEBATE ASSOCIATION
ARGUMENT CONSTRUCTION
INSTRUCTIONS: In the space provided, list your proposed topics for debate. For each topic, list the
claim, warrant, three pieces of data, and an impact.
Argument Topic #1:
Claim
Warrant
Data 1.
2.
3.
Impact
Argument Topic #2:
Claim
Warrant
Data 1.
2.
3.
Impact
Argument Topic #3:
Claim
Warrant
Data 1.
2.
3.
Impact