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Duck test. A mallard, shown looking like a duck and swimming like a duck. The duck test is a form of abductive reasoning. This is its usual expression: If it looks like a duck, swims like a duck, and quacks like a duck, then it probably a duck. The test implies that a person can identify an unknown subject by observing that subject's habitual ...
Rorschach test. The Rorschach test is a projective psychological test in which subjects' perceptions of inkblots are recorded and then analyzed using psychological interpretation, complex algorithms, or both. Some psychologists use this test to examine a person's personality characteristics and emotional functioning.
Mirror test. The hamadryas baboon is one primate species that fails the mirror test. The mirror test —sometimes called the mark test, mirror self-recognition ( MSR) test, red spot technique, or rouge test —is a behavioral technique developed in 1970 by American psychologist Gordon Gallup Jr. as an attempt to determine whether an animal ...
Elephant cognition is animal cognition as present in elephants. Most contemporary ethologists view the elephant as one of the world's most intelligent animals. With a mass of just over 5 kg (11 lb), an elephant's brain has more mass than that of any other land animal, and although the largest whales have body masses twenty times those of a ...
Hunting for elephant ivory in Africa and Asia has led to natural selection for shorter tusks and tusklessness. Skin Asian elephant skin. An elephant's skin is generally very tough, at 2.5 cm (1 in) thick on the back and parts of the head. The skin around the mouth, anus, and inside of the ear is considerably thinner. Elephants are typically ...
Duck test#Elephant test. This page is a redirect. The following categories are used to track and monitor this redirect: With possibilities: This is a redirect from a title that potentially could be expanded into a new article or other type of associated page such as a new template. The topic described by this title may be more detailed than is ...
Shepard elephant. The Shepard elephant, also known as L'egs-istential Quandary or the impossible elephant is an optical illusion, of the type impossible object, based on figure-ground confusion. As its creator Roger Shepard explains: [1] The elephant…belongs to a class of objects that are truly impossible in that the object itself cannot be ...
Elephant's toothpaste. Elephant's toothpaste is a foamy substance caused by the rapid decomposition of hydrogen peroxide ( H2O2) using potassium iodide (KI) or yeast and warm water as a catalyst. [1] How rapidly the reaction proceeds will depend on the concentration of hydrogen peroxide.