The perceptual set of elevated alertness described in policing is best described as which term?

• A. Cognitive dissonance
• B. Confirmation bias
• C. Perceptual set
• D. Motivated reasoning

Answer: (C)

Perceptual set is a mental predisposition to perceive sensory information in a particular way, shaped by expectations, past experience, and current goals. In policing, a state of elevated alertness primes officers to detect and interpret cues as potential threats, so they’re more likely to notice suspicious behavior and respond quickly. This explains why it’s the best description: it captures the ready-for-threat mindset that biases perception toward danger. It isn’t about resolving conflicting beliefs (cognitive dissonance), nor about seeking only information that confirms a preconception (confirmation bias), nor about shaping conclusions to fit a desired outcome (motivated reasoning).