ON THE CONTEXT OF YAWNING - WHEN, WHERE, AND WHY

From personal logs kept by 28 subjects of their yawning during 1 week we found that yawns occurred during the hours of transitions between s leeping and waking. During the day yawns were associated with attendin g class, driving, studying or reading, and watching television. A surv ey of a much larger sample of subjects disclosed some agreement, but s everal discrepancies between what respondents believed about their yaw ning and the actual behavior of those subjects who kept logs.