“…Two versions are available: collapsed (short) and expanded. The TOPO was developed from a literature search of play typologies, including Rubin's widely used Play Observation Scale (Rubin, 2001). After developing further items that better captured outdoor play, the TOPO was piloted and then reviewed by content experts, resulting in a final version with nine primary play types (physical play, exploratory play, imaginative play, play with rules, bio play, expressive play, restorative play, digital play, and non‐play).…”