Which theorist led the case for the influence of social interactions on cognitive development?

From the twenties to the sixties,

A) spatial memory suffers much less than verbal memory. B) the amount of information people can retain in working memory diminishes. C) adults rehearse more than they did in early adulthood. D) the speed at which adults can repeat information to themselves increases.

When you learned to read English, you may have learned the following saying: "When two vowels go walking, the first does the talking.". If we were to apply this rule to heterozygous genes, we would be most accurate if we said, "When two genes go walking, the ____ one does the talking."

a. masked b. recessive c. dominant d. typical