@article {Raven:August 2000:0010-0285:1,
	author = "Raven J.",
	title = "The Ravens Progressive Matrices: Change and Stability over Culture and Time",
	journal = "Cognitive Psychology",
	volume = "41",
	year = "August 2000",
	abstract = "<P>Data relating to the stability and variation in the norms for the Raven&#039;s Progressive Matrices Test (a well-validated measure of basic cognitive functioning) for different cultural, ethnic, and socioeconomic groups on a worldwide and within-country basis are first summarized. Subsequent sections deal with variation over time. A possible explanation for the variation in norms over time and between ethnic groups within countries is offered. <B>Copyright 2000 Academic Press.</B></P>",
	pages = "1-48(48)",
	url = "http://www.ingentaconnect.com/content/ap/cg/2000/00000041/00000001/art00735"
}