Which theory describes two modes of thinking: fast, involuntary and slow, deliberate?

• A. Dual process theory
• B. Habitual
• C. Bandwagon effect
• D. Dissonance

Answer: (A)

Two modes of thinking are described by dual process theory, which splits thinking into quick, automatic judgments and slower, deliberate reasoning. The fast, involuntary system kicks in for immediate impressions, instincts, and familiar tasks, while the slow, deliberate system engages when we carefully analyze problems, weigh evidence, or make careful decisions. This framework helps explain everyday cognition, like instantly recognizing a friend (fast) versus solving a complex problem that requires step-by-step reasoning (slow).

Other options don’t fit this two-system idea. Habitual refers to actions done automatically from repetition, not a theory about two distinct thinking processes. Bandwagon effect describes conforming to a group, not how the mind processes information. Dissonance is about the discomfort from holding conflicting beliefs, not modes of thinking.