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Results for “Desegregation”

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At least 19 recordsLinked to original sources
PubMed1987

N-methyl-D-aspartate receptor antagonist desegregates eye-specific stripes.

The optic tecta of surgically produced three-eyed tadpoles were chronically exposed to the N-methyl-D-aspartate (NMDA) receptor antagonist aminophosphonovaleric acid (APV), or to NMDA itself, to assess the influence of NMDA receptor/channels on the eye-specific segregation of retinal ganglion cell (RGC) terminals that occurs whenever two retinas innervate one tectal lobe. Exposure of the tectum to the active isomer of APV produces desegregation of the RGC terminals without blocking electrical activity in the afferents or altering their terminal arbor morphology. Exposure to the inactive isomer of APV causes no perturbation of the normal stripe pattern. APV-induced desegregation is completely reversible within 2 weeks of removal of the APV. In addition, exposure of the optic tectum to NMDA results in stripes with sharper borders and fewer forks and fusions than untreated animals. These results suggest that the NMDA receptor/channel plays a role in eye-specific segregation in the three-eyed tadpole.

2-Amino-5-phosphonovalerate↗
PubMed1980

Self-perception and academic achievement: variations in a desegregated setting.

The author studied 101 black and 412 white fifth-grade students and found no significant racial differences on any measures of general or area-specific (i.e., school, peers, home) self-esteem when socioeconomic status (SES) was controlled but found significant differences by SES on most measures when race was controlled. There was a positive correlation between self-concept of ability and SES when race was controlled, but when SES was controlled black children scored significantly higher than did white children. Black and lower-SES subjects scored significantly lower than other subjects on academic achievement and achievement orientation. This study highlights the need to move from the current concern with the psychological consequences of desegregation for black children toward addressing the misfit relationship between all lower-SES children and the school.

Achievement↗
PubMed1993

The effect of age desegregation on environmental quality for elderly living in public/publicly subsidized housing.

A random sample of elderly living in age-desegregated public housing for the elderly is compared with a random sample of elderly living in age-homogeneous Section 202 housing in the same urban area. Findings suggest that the current trend of mixing young handicapped persons with elderly tenants is associated with a decline in environmental quality on three dimensions--social networks, territoriality, and global measures of satisfaction. The differences are not explained away by pre-existing factors, such as social and economic resources and service provision.

Adult↗
PubMed1978

A fertility reaction to a historical event: southern white birthrates and the 1954 desegregation ruling.

On 17 May 1954 the Supreme Court, in its decision in Brown v. Board of Education, declared de jure segregation of the public schools to be unconstitutional. It is argued here that a consequence of that decision was a decline in childbearing among white Southerners. In the nation as a whole, period fertility rates increased between 1954 and 1955, but in 9 of the 11 former Confederate states they decreased. Further analysis shows that these Southern fertility decreases began about 12 months after the Supreme Court decision. This variation in behavior in reaction to a historical event has important implications for the explanation and prediction of fertility.

Birth Rate↗