_Unsatisfactory._ "Both taste the same." "Both have a lot of seeds." "Both have a fuzzy skin." "An apple is bigger than a peach." "One is red and one is white," etc. Again, over 50 per cent of the failures are due to giving differences and about 18 per cent to silence. (c) _Iron and silver_ _Satisfactory._ "Both are metals" (or mineral). "Both come out of the ground." "Both cost money." "Both are heavy." "Both are hard." "Both can be melted." "Both can be bent." "Both used for utensils." "You manufacture things out of both of them." "Both can be polished." These are named most frequently in the following order: (1) hardness, (2) origin from the ground, (3) heaviness, (4) use in making things. _Unsatisfactory._ "Both thin" (or thick). "Sometimes they are the same shape." "Both the same color." "A little silver and lots of iron weigh the same." "Both made by the same company." "They rust the same." "You can't eat them" (!)[59] [59] One is here reminded of the puzzling conundrum, "Why is a brick like an elephant?" The answer being, "Because neither can climb a tree!" A response of this type states a fact, but because of its bizarre nature should hardly be counted satisfactory. Of 60 failures, 32 were due to giving differences and 14 to silence or unwillingness to hazard a reply. (d) _A ship and an automobile_ _Satisfactory._ "Both means of travel." "Both go." "You ride in them." "Both take you fast." "They both use fuel." "Both run by machinery." "Both have a steering gear." "Both have engines in them." "Both have wood in them." "Both can be wrecked." "Both break if they hit a rock." About 45 per cent of the answers are in terms of running or travel, 37 per cent in terms of machinery or structure, the rest scattered. _Unsatisfactory._ "Both black" (or some other color). "Both very big." "They are made alike." "Both run on wheels." "Ship is for the water and automobile for the land." "Ship goes on water and an automobile sometimes goes in water." "An auto can go faster." "Ship is run by coal and automobile by gasoline." Of 51 failures, 32 were due to giving differences and 14 to failure to reply. REMARKS. The test of finding similarities was first used by Binet in 1905. Our results show that it is fully as satisfactory as the test of giving differences. The test reveals in a most interesting way one of the fundamental weaknesses of the feeble mind. Young normal children, say of 7 or 8 years, often fail to pass, but it is the feeble-minded who give the greatest number of absurd answers and who also find greatest difficulty in resisting the tendency to give differences.[60] [60] For further discussion of the processes involved, see VII, 5. VIII, 5. GIVING DEFINITIONS SUPERIOR TO USE