Results showed that in Vienna people yawned
more in summer than in winter, whereas in Arizona people yawned
more in winter than in summer.
Nineteen chimps living in a research facility yawned
when they saw the same action from chimps that they lived with, researchers and staff they had seen before and people who were new to them.
Each subject had to click a button every time they yawned
They observed the dogs' responses when a person yawned
, gaped or did nothing.
In a recent study, students were shown videos of people yawning while researchers counted how many times they yawned
e In a recent study, students were shown videos of people yawning nt were deos awning archers w d WHAT A YAWN J Boosts alertness while researchers counted how many times they yawned
Most remarkably, a recent study at London University showed that the greatest incidence of contagious yawning occurs in dogs, with 72 per cent of the animals in one experiment yawning back when humans yawned
According to an evolutionary psychologist, it is contrary to what had been heard informally; dog owners have claimed that they catch their dogs' yawns, but their dogs never yawned
when they did.
The researchers found that birds placed in a room that became increasingly warmer versus a room at a constant temperature yawned
twice as much.