Which statement best describes signs of cognitive fatigue during scent work conditioning?

• A. Improved performance and faster responses
• B. Deterioration in task accuracy, slower responses, reduced enthusiasm, and repeated mistakes despite breaks
• C. No change in behavior or performance
• D. Increased motivation to train

Answer: (B)

Cognitive fatigue shows up as a breakdown in mental processing needed for tasks like scent work: attention, decision-making, and working memory falter under sustained mental effort. In conditioning, this means the dog’s accuracy drops, it takes longer to respond or to indicate a target, and it seems less engaged or enthusiastic. Importantly, these issues persist even after short breaks and show up as repeated mistakes rather than one-off slips. This pattern—declining accuracy, slower response times, reduced drive, and recurring errors despite rest—best captures the impact of cognitive fatigue on performance.

If you saw improved performance or faster responses, that would suggest regained alertness or learning rather than fatigue. No change would imply the dog isn’t yet showing fatigue signs, and increased motivation would indicate heightened arousal rather than cognitive depletion.