Collecting some haptic discrimination tasks I’m finding in the literature.

Collecting some haptic discrimination tasks I’m finding in the literature.
 
2.2.3. Roughness
How rough or smooth does the material appear to you? Low values indicate that the surface feels smooth; high values indicate that it feels rough.
 
2.2.4. Orderliness
How ordered or chaotic does the material appear to you? Low values indicate that the material’s surface shows no regularities but rather is random or chaotic. High values mean that the surface has an ordered, regular structure.
 
2.2.5. Hardness
How hard or soft does the material appear to you? How much force would be required to change the shape of the material? Low values indicate that the surface feels soft; little force is required to change the shape of the material. High values indicate that it feels hard and cannot easily be deformed.
 
2.2.6. Warmth
How warm or cold does the material appear to you? Low values indicate that the material feels warm or body temperature; high values indicate that the material feels cold to the touch.
 
2.2.7. Elasticity
How elastic or stiff does the material appear to you? Low values indicate that the material is not elastic. It is either stiff or its form remains changed after deformation. High values indicate the material is very elastic. After deformation, it will return to its original form.
 
2.2.8. Friction
How high does the friction of the material appear to you? Low values indicate that the material has low friction and is slippery. High values indicated that you feel a lot of friction when touching the material.
 
2.2.9. Three-Dimensionality
How three-dimensional does the material’s surface appear to you? Low values indicate that the surface is flat, high values indicate that the surface has a threedimensional structure.
 
2.2.10. Texture
How textured/patterned or homogeneous/uniform is the material’s surface? Low values indicate that the surface is uniform, high values indicate that the material has a pattern or texture.
 

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