Game concept
Childhood Trait
From the game's encyclopedia
Every child gains a Childhood Trait as they are growing up, such as Rowdy or Charming.
The gained trait is indicative of which Education Focus would suit them best.
The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.
Childhood Trait is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Every child gains a Childhood Trait as they are growing up, such as Rowdy or Charming." It is part of Trait. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.
Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.