Question 1

Baby Marcey recently surprised her mother by saying "me milk" when asking for milk. Marcey's mother, knowing appropriate language milestones for an 18-month-old, recognizes that her daughter has just exhibited:

Accepted Answer

Telegraphic speech is when toddlers use two-word phrases that convey a complete idea, typical for an 18-month-old.

Question 2

The amount of synaptogenesis that occurs at 7 months of age appears to have a relationship to receptive language skills. Which of the following is accurate regarding this relationship?

Accepted Answer

A gray matter concentration of 0.34 is associated with a mean T-score of 50, indicating average receptive language abilities at 12 months of age.

Question 3

Humans spend the most time in REM sleep when they are _____ year(s) of age.

Accepted Answer

Infants spend the most time in REM sleep, with up to 50% of their sleep time being in the REM stage. As humans age, the percentage of time spent in REM sleep decreases. Therefore, option B (0 to 1 year) is the best choice.

Question 4

By adulthood, human bodies have grown to about _____ times their newborn size.

Accepted Answer

By adulthood, human bodies have grown to about 21 times their newborn size.

Question 5

Mothers and fathers use infant-directed speech with their babies because:

Accepted Answer

Parents use infant-directed speech because babies are more attentive and engaged when they hear it. This type of speech is characterized by a higher pitch, exaggerated intonation, slower tempo, and simpler vocabulary, which are all used to capture the infant's attention and facilitate language acquisition. It is not due to laziness, immaturity, or trying too hard to bond with their children.

Quiz 3: Infancy: Physical and Cognitive Development

Baby Marcey recently surprised her mother by saying "me milk" when asking for milk. Marcey's mother, knowing appropriate language milestones for an 18-month-old, recognizes that her daughter has just exhibited:

The amount of synaptogenesis that occurs at 7 months of age appears to have a relationship to receptive language skills. Which of the following is accurate regarding this relationship?

Humans spend the most time in REM sleep when they are _____ year(s) of age.

By adulthood, human bodies have grown to about _____ times their newborn size.

Mothers and fathers use infant-directed speech with their babies because: