Temperament a. has been measured using the same nine components across various studies. b. has only been assessed using cross-sectional methods. c. is considered to have a biological basis. d. has...

Temperament

a. has been measured using the same nine components across various studies.

b. has only been assessed using cross-sectional methods.

c. is considered to have a biological basis.

d. has no bearing whatsoever on later development.

Babbling

a. is found only in infants from the Western Hemisphere.

b. occurs only if the infant can hear.

c. develops before cooing.

d. is universal.