Monotropism describes an attentional system where focus naturally organizes around a small number of interests or streams at a time. The term was first articulated by Autistic writer Dinah Murray to describe how autistic attention tends toward depth, immersion, and continuity rather than divided focus.

A monotropic system prefers staying with one channel long enough for meaning, understanding, or stability to form. When attention is pulled across competing demands, the system can strain. Tanya Adkin later coined the term monotropic split to describe the distress that can arise when attention is forced between multiple streams. Sudden transitions, multitasking, or constant interruptions may trigger overwhelm, shutdown, or fatigue.

For many Autistic people, monotropic attention feels stabilizing. It narrows the world and quiets background noise. In a culture built around constant pivoting, monotropic minds are often working much harder than others realize.

Monotropism is not the same as hyperfocus. Hyperfocus is a temporary state of intense attention that many people experience. Monotropism is the underlying attentional architecture. Hyperfocus is an attention mode; monotropism is an attention system.