6. All impulse buyers are consumers with credit cards.

All shopaholics are impulse buyers.

Th erefore, all shopaholics are consumers with credit cards. Use Venn diagrams to determine whether the following standard-form categorical syllogisms are valid from the Boolean standpoint, valid from the Aristotelian standpoint, or invalid. Th en, identify the mood and fi gure, and cross-check your answers with the tables of valid syllogisms found in Section 5.1.