Figure 1
From: Depths and limits of spontaneous categorization in a family dog
Experimental setup in the different tests. In the baseline (a), 20 randomly chosen familiar objects (including those belonging to the different categories) are on the floor; In the Test with familiar objects of the familiar categories (b), all the 25 objects belonging to the 4 categories (balls, Frisbees, rings, ropes) are on the floor; In the categorization test (c), 4 novel toys belonging to the 4 categories are on the floor. In the color categorization test (d), 8 objects of 5 different colors are on the floor.
