Early Word Comprehension in Infants: Replication and Extension

Area of Science:

• Developmental Psychology
• Cognitive Science
• Linguistics

Background:

• Recent studies indicate that infants as young as 6 to 9 months can comprehend the meaning of certain common words.
• This research builds upon prior findings to further investigate early word comprehension in infants.

Purpose of the Study:

• To replicate and extend previous findings on infant word understanding.
• To investigate the age at which infants demonstrate comprehension of common early words.
• To explore the nature of word comprehension in infants aged 6-16 months.

Main Methods:

• Infants (6-16 months) were presented with side-by-side video clips of common objects.
• A sentence naming one of the objects was played.
• Infants' looking behavior towards the named video clip was recorded and analyzed.

Main Results:

• Infants looked at the named video clip at above-chance rates, confirming comprehension of common words.
• Word comprehension was evident by 6-9 months of age.
• A significant increase in performance was observed around 14 months of age.

Conclusions:

• Infants aged 6-9 months possess an understanding of common object words.
• Comprehension of common words significantly improves around 14 months.
• The study suggests that 6-9 month olds have a limited understanding of non-object words (verbs, adjectives), irrespective of the visual stimuli used.