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. 2017 May 11;7:1788. doi: 10.1038/s41598-017-01715-2

Table 1.

Distribution of tower height in stick levels and tower shape in the three conditions.

Tower height in stick levels Tower shape Shape description Condition
Baseline Full demo Endstate demo
Level 4 Level-4-tripod As Tripod, but additional stick on top 1
Level 4 Total 0/23 (0%) 0/23 (0%) 1/27 (3.7%)
Level 3 Tripod Three legs, combined with plasticine, two sticks on top of each other added above 3 1
Level-3-tower Three sticks combined vertically on top of each other (at least one stick per level) 2 3 6
Level 3 Total 2/23 (8.7%) 6/23 (26.1%) 7/27 (25.9%)
Level 2 (modified) Level-2-tripod small tripod (at least three legs – plasticine – stick) 2 2
Level-2-tower Two sticks combined vertically on top of each other (at least one stick per level) 4 6 8
Other level-2-constructions 1 2 3
Level 2 Total 5/23 (21.7%) 10/23 (43.5%) 13/27 (48.1%)
Level 1 Level-1-tower Ball of plasticine with vertical stick on top or two level-1-towers combined with sticks combined at top 6 5 4
Hedgehog Ball of plasticine from which several sticks protrude upward and/or sideward 5 2
Other level-1-construction 1
Level 1 Total 11/23 (47.8%) 7/23 (30.4%) 5/27 (18.5%)
Level 0 Horizontal construction Construction with sticks and plasticine, intentionally built in horizontal fashion 3
Plasticine tower Plasticine-only tower 2 1
Level 0 Total 5/23 (21.7%) 0/23 (0%) 1/27 (3.7%)