Finding an Arguments Validity Using the Mood and Figure

Mood: AOO

Figure: 1

Validity: Invalid

1. All Athenians are Greek.

2. Some humans are not Athenians.

3. So, some humans are not Greek.

Mood: AAA

Figure: 1

Validity: Valid

1. All sentient creatures are rights-holders.

2. All animals are sentient.

3. So, all animals are rights-holders.

Mood: EAE

Figure: 1

Validity: Valid

1. No evil things are good things.

2. All serial killers are evil things.

3. So, no serial killers are good things.

Mood: AAA

Figure: 3

Validity: Invalid

1. All liars are self-deceived people.

2. All liars are wicked people.

3. So, all wicked people are self-deceived people.

Mood: AAA

Figure: 2

Validity: Invalid

1. All dogs are animals.

2. All cats are animals.

3. So, all cats are dogs.

Mood: AII

Figure: 1

Validity: Valid

1. All psychopaths are happy people.

2. Some criminals are psychopaths.

3. So, some criminals are happy people.

Mood: AOO

Figure: 1

Validity: Invalid

1. All people of faith are virtuous people.

2. Some highly moral people are not people of faith.

3. So, some highly moral people are not virtuous people.

Mood: EAO

Figure: 1

Validity: Valid only if the minor term refers.

1. No gin drinkers are Russian speakers.

2. All English miners are gin drinkers.

3. So, some English miners are not Russian speakers.

Mood: AOO

Figure: 2

Validity: Valid

1. All meaningful activities are worth doing well.

2. Some hobbies are not things worth doing well.

3. So, some hobbies are not meaningful activities.

Mood: AEE

Figure: 2

Validity: Valid

1. All brain events are physical events.

2. No mental events are physical events.

3. So, no mental events are brain events.