Learned Irrelevance describes what phenomenon?

• A. Pre-exposure effect where the dog learns to ignore things that have no meaning to him.
• B. Increases responsiveness to previously ignored cues.
• C. A form of reinforcement to strengthen responses.
• D. A memory decay process unrelated to cues.

Answer: (A)

Learned irrelevance is about how prior exposure to a cue that never predicts anything makes a dog treat that cue as unimportant. When a dog repeatedly encounters a stimulus with no consequence, attention to that stimulus drops. Later, if that same cue is paired with a reward or punishment, learning about it is slower or weaker because the dog has learned to ignore it. For example, if a neutral sound has been heard many times without any outcome, the dog may not respond quickly even if that sound later signals a treat. This is different from simply strengthening a response through reinforcement or from memory decay; it’s about how nonpredictive exposure changes how the dog processes and attends to cues.