Brain researchers say, “Neurons that fire together, wire together,”1 meaning that activities that repeatedly activate a constellation of neurons cause those neurons to connect more closely. If a child goes through puberty doing a lot of archery, or painting, or video games, or social media, those activities will cause lasting structural changes in the brain, especially if they are rewarding. This is how cultural experience changes the brain, producing a young adult who feels American instead of Japanese, or who is habitually in discover mode as opposed to defend mode.
