Kindergarten children are more proficient with single-digit arithmetic today than they were in 1951 . This may be due to ___
a. evolutionary increases in the size of the prefrontal cortex
b. increases in the amount of time mothers spend with their children
c. increases in the availability of educational television programs
d. increases in the value of mathematics in society
C
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Tony and Tina can tell at birth that something is wrong with their son. Genetic tests indicate that the child has an extra chromosome in his cells and that chromosome is a sex chromosome. Which of the following does the child most likely have?
a. Klinefelter syndrome b. Down syndrome c. Hemophilia d. Turner syndrome
Vygotsky viewed __________ play as one of the primary contributors to the development of executive functioning.
A. parallel B. rough-and-tumble C. cooperative pretend D. sociodramatic