Create an account
a counter example to a syllogism is a syllogism of the same form as the original, but with obviously true premises and false conclusion, in order to show the original to be invalid.
key point #1
the validity of syllogisms depends solely on their form. Certain forms are always valid; other forms are always invalid.
do not assume a syllogism is valid if you cannot think of a counter example to it. You may just need to be more creative.
key point #2
when developing counterexamples, try starting with a false conclusion, then find a middle term which results in true premises.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together