perceptual set

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Marriage. A couple getting married during a church wedding ceremony. (religion, ceremony, bride, groom)

The Seven Sacraments of the Roman Catholic church

New Zealand. Political/Physical map. Includes locator.

Where Is “Old Zealand”?

Easter Procession of Maria Santisima del Sacromonte in Granada, Spain. This statue is known as Virgen de los Gitanos or The Virgin of the Gypsies.

What is Holy Week?

King Cobra snake in Malaysia. (reptile)

9 of the World’s Deadliest Snakes

African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.

Timeline of the American Civil Rights Movement

Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

Battle of the Alamo from "Texas: An Epitome of Texas History from the Filibustering and Revolutionary Eras to the Independence of the Republic, 1897. Texas Revolution, Texas revolt, Texas independence, Texas history.

6 Wars of Independence

perceptual set

animal behavior

Also known as: search image

Learn about this topic in these articles:

effect on coloration development

In coloration: Coloration changes in populations
The phenomenon—known as a perceptual set or a search image—is exemplified by the predator of the European snail Cepaea. Predators encounter one morph and form a search image; they continue to hunt for that one form until its increasing rarity causes the predator to hunt randomly, encounter a different…
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