In fact, at the initial stage of baby's understanding of words, the first words they learn are "mom" and "dad", because he or she often hears these words around: "the baby's dad is coming to hug you" or "mom fed you" and so on. However, many parents are puzzled. How old do babies start to combine these words and meanings?
Experts in early childhood education and 24 6-month-old babies conducted an experiment to find out how older babies associate words with specific objects. In the laboratory, the researchers photographed each parent's face with a white background, then sat the baby on the mother's lap, and put a TV set on each side of the baby to play the baby's mother's or father's face respectively. Then call out in a synthesized voice: "Dad" or "Mom". Through the observation of researchers, babies will spend more time looking at the faces of called relatives.
However, the researchers are not satisfied with this result, and they want to rule out another possibility of this result. In fact, some people may think that babies may put the same thing under one label. Just as the word "dog" may be used by children to address cats, cows or other quadrupeds, the word "mother" may also be used in this way, that is, babies may use this word to address all women and use the word "father" to address all men.