This experiment is a version of the Oddball Task. Participants will hear an animal sound in either the right or left channel. The participant is to respond to what animal sound was just played. On standard trials the animal sound will dominantly play out of one channel (e.g. dog from right, cat from left channel). This occurs 80% of the time. On 'strategy-change' trials, the sound will occur in the opposite channel. This occurs 20% of the time. Responses are made with the keyboard.