“…Based on previous research demonstrating how even very subtle environmental cues can prompt behavior change [27,[32][33][34][35][36][37][38][39][40][41][42][43]46,48,49,[51][52][53][54][55][56][57][58][59], we hypothesized that children exposed to the active posters spend a greater proportion of their playtime engaged with active toys (relative to sedentary toys) than children exposed to the nature posters. As in previous research demonstrating downward trajectories in PA as children age [2,18,60-65], and greater PA among boys than among girls [14,15,17,18,24,26], we also tested whether younger children and boys would spend a greater proportion of their playtime with active toys, compared with older children and girls, respectively.…”