What did de vries find out when she interviewed children regarding their beliefs about people wearing masks and about the constancy of gender as a result of certain irrelevant changes?

De Vries find out that children form 3 to 6 years old may not differenciate identity from appereance. For a child the way someone looks defines them. If someone is wearing a mask, that person becomes the character that masks represents.

Also if a person looks different, for instance if a familiar person changes from the way women or a man look like, this interfers with the recognition of those familair people. If the appereance is different than the original representation they have, they think that person is someone else.

Explanation:

The possibility of differenciating reality from appeareance, requires a person flexible cognitive process. When in a specific time of developing, children use concrete thinking, and they have not yet developed abstract thinking. This is why it is hard for them to separate appearence vs real things.

For example: every old man wearing a Santa outfit, may be identify as Santa.

 The correct answer is :  She reported that three-year-old children tend to believe that changes in appearance lead to changes in identity. He also concluded from his study that the children said that the appearance of an object does not necessarily correspond to its reality.