The Peabody Picture Vocabulary Test - Revised (PPVT-R) was designed as a measure of receptive language and has replaced the original Peabody Picture Vocabulary Test (PPVT) published in 1959. The PPVT-R retains many features of its predecessor. For example, it consists of two forms (L and M), allows a verbal or nonverbal response, is individually administered, and is untimed (although administration time typically requires only 15-20 minutes). The PPVT-R contains 350 items making it more reliable and discriminating than the PPVT, which had only 300 items. The score is obtained by subtracting errors from total ceiling score. When PPVT-R standard scores are compared to PPVT IQS, WISC-R IQS, and Stanford-Binet IQS, the mean PPVT-R scores have been significantly lower. However, results from two studies indicate comparable mean standard scores between the PPVT-R and McCarthy Scales of Children's Abilities. Correlations ranging from .16 to .78 have been obtained from studies examining the relationship between the PPVT-R standard score equivalents and various "g factor" scores such as Wechsler Full Scale IQS, Stanford-Binet IQS, and McCarthy Scales of Children's Abilities GCIs; correlation coefficients ranging from .40 to .60, however, are more common. The modest coefficients of determination emerging from these correlations suggest limited shared variance; thus PPVT-R scores should not be interpreted as intelligence test scores. No predictive validity (or long-term temporal stability) data are available. The percentage of white children who know a PPVT word correlates 0.98 with the percentage of slightly older black children who know the same words as white children. The black children just seem to learn the words somewhat later. Black children never catch up, however, so black adults know fewer words than white adults (White, 1992). The tests are also methodological bias. Standardized test assess peoples skills and knowledge using methods that some test takers find poorly, frustrating, anxiety-provoking, or silly.