The researchers wanted to understand what kind of strangers babies are afraid of, and conducted experiments on babies aged 7-19 months  The experiment showed that babies showed positive and gentle reactions to strangers, and they were more afraid of strangers and distanced  The closer they are, the greater the negative emotions
Babies are less afraid of dwarfs than strange adults
In further experiments, the researchers put these babies with strange adults, dwarfs, and children, and found that the babies were more afraid of strange adults and dwarfs than strange children