Word reuse and combination support efficient communication of emerging concepts

Area of Science:

• Linguistics
• Cognitive Science
• Information Theory

Background:

• Lexicalization is crucial for expressing novel concepts.
• Word reuse and word formation (combination) are common lexicalization strategies, often studied in isolation.
• Existing research separates the study of word meaning extension and word formation.

Purpose of the Study:

• To propose an information-theoretic account of lexicalization strategies.
• To explain the trade-off between word length and informativeness in word reuse and combination.
• To unify the study of word reuse and combination under a single theoretical framework.

Main Methods:

• Developed an information-theoretic model of lexicalization.
• Analyzed a large dataset of lexical items (reuse and compounds) in English, French, and Finnish.
• Compared the communicative efficiency of historical lexical items with hypothetical alternatives.

Main Results:

• Lexicalization strategies are constrained by a trade-off between word length and precision.
• Word reuse favors shorter words at the cost of precision; word combination yields more informative but longer words.
• Historically emerging lexical items demonstrate higher communicative efficiency than hypothetical constructions.
• Literal reuse items and compounds are more communicatively efficient than their nonliteral counterparts.

Conclusions:

• Word reuse and combination are unified under an efficient communication principle.
• Lexicalization strategies are driven by a balance between competing communicative pressures.
• The findings support a unified, information-theoretic account of lexicalization.