Which type of drug is used as a treatment for ADHD?

One example of socialization through language is described in the study of Portuguese-,

English-, and Mandarin-speaking children and their use of quantifiers such as "all" and "each." The researchers found that a. the Mandarin speakers never learned to distinguish between the two quantifiers. b. all three groups of children were able to distinguish between the two quantifiers at around 6 years of age. c. the Portuguese and Mandarin speakers learned to distinguish between the two quantifiers earlier than the English speakers. d. the English speakers learned to distinguish between the two quantifiers earlier than the Portuguese and Mandarin speakers.

What is the difference between motion parallax and optic flow?

What will be an ideal response?