{"fact":"Just like us, crows can get frustrated! When the task gets harder and the reward is further away, they tend to give up more often.","context":"Inconsistent responding becomes more frequent, the larger the FR requirement, with these \"breaks\" (within-ratio pauses) typically occurring during the initial responses of a ratio.","source":"Robert W. Powell, Responding under basic schedules of reinforcement in the crow., 10.1037/h0032561","index":94}