Term

Definition
Must be true conclusion based on given information 


Term

Definition


Term

Definition


Term

Definition


Term

Definition


Term

Definition
"If...then" Necessary and Sufficient Conditions 


Term
Conditional Reasoning Features 

Definition
1. Sufficient does not cause the Necessary 2. There is not time requirement for either 3. Conditional relationship does not have to be realistic 


Term

Definition
"If..." requires a Necessary Condition 


Term

Definition
"then" does NOT require a Sufficient Condition 


Term
Repeated Form (valid/invalid?) 

Definition


Term

Definition
Reverse and Negated together Valid Inference 


Term
Switches elements in the Sufficient and Necessary Conditions 

Definition
Invalid Inference Mistaken Reversal 


Term
Negates both conditions but does not switch them 

Definition
Invalid Inference Mistaken Negation 


Term
"Unless X, Y"
Example: "Unless a person studies, she will not receive an A" 

Definition
Term modified by "unless" (except, until, without) becomes necessary condition and remaining term is negated and the sufficient condition Sufficient: A Necessary: Study 


Term

Definition
At least one of the two and possibly both 


Term
"If and only if" (in terms of A and B) 

Definition
A and B OR neither A nor B 

