Updated 11-Feb-2021
I'll come back and write more about this later (especially how to help with this with one's children), but for now here are some resources:
- Submenu Navigation - Nielsen Norman Group
- Seeking information online: the influence of menu type, navigation path complexity and spatial ability on information gathering tasks
- Online Spatial Reasoning Task
- Recognizing Spatial Intelligence - Scientific American
- Measuring Human Capabilities: An Agenda for Basic Research on the Assessment of Individual and Group Performance Potential for Military Accession (2015) - Chapter: 4 Spatial Abilities