Question

When 1-year-old babies in an experiment were placed on an ambiguous visual cliff and saw an expression of fear on their mothers' faces, what portion of them crossed the cliff?

Answer 1

the answer is: None of them

For most children, we develop a functional ability to distinguish facial expression by the age of 6 or older. there are only 1 facial expression that recognized by 1-year old infants (happy and angry) , while the other complex expressions would look generally the same for them.