# Bigger versus smaller: Children's understanding of size comparison words becomes more precise with age

## TL;DR

Children's understanding of size comparison words like 'bigger' and 'smaller' improves and becomes more precise as they grow older.

## Contribution

The study reveals how children's interpretations of size comparison words develop and become more accurate with age.

## Key findings

- Children were most successful with words describing size increases.
- Younger children often misinterpreted 'smaller' and 'shorter', building bigger structures instead.
- Understanding of the dimensional aspect of 'taller' developed gradually over time.

## Abstract

The ability to compare plays a key role in how humans learn, but words that describe relations between objects, like comparisons, are difficult to learn. We examined how children learn size comparison words, and how their interpretations of these change across development. One‐hundred‐and‐forty children in England (36–107 months; 68 girls; majority White) were asked to build block structures that were bigger, longer, smaller, shorter, or taller than an experimenter's. Children were most successful with words that refer to size increases. Younger children were less accurate with smaller and shorter, often building bigger structures. The dimensional aspect of taller emerged gradually. These findings suggest that children's interpretation of the meaning of size comparison words changes and becomes more precise across development.