Newborns are too noisy for researchers to concentrate.
Newborn babies are hard to acquire in large enough quantities.
It's impossible to ensure that test is unaffected by discomfort.
New-born infants sleep most of the day.
Perceptual ocular technique
Preferential looking technique
Preventative leading technique
3
18
24
True
False
Relative size
Disparity
Motion parallax
Superposition
Angle of convergence
They flew into violent rages.
Sudden changes of illumination startled the animals.
They did not blink at a threatening motion towards the face.
They needed to be fed more often.
True
False
True
False
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