Cumulative semantic cost without successful naming

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Linguistics

Background:

• Accessing semantic information can impede subsequent retrieval of related items, known as cumulative semantic cost.
• This phenomenon, observed in picture-naming tasks, shows increased naming times with more previously named items from the same category.

Purpose of the Study:

• To investigate if successful retrieval of previous within-category items is necessary for cumulative semantic cost in children.
• To examine the role of retrieval attempts versus successful retrieval in semantic interference.

Main Methods:

• Two picture-naming experiments involving 229 children aged 4-11 years.
• Analysis of naming latencies and nonresponse rates in relation to previous item retrieval success.

Main Results:

• Younger children exhibited higher nonresponse rates, indicating less consolidated lexical representations.
• Cumulative semantic cost occurred regardless of whether previous within-category items were successfully named.
• Nonresponses and successful retrievals of prior items showed similar semantic costs.

Conclusions:

• The act of attempting lexical retrieval, not successful retrieval, triggers semantic cost in picture naming.
• This cost may stem from the weakening of semantic-to-lexical mappings for related words.
• Findings align with retrieval-induced forgetting mechanisms in memory research.