UNT Theses and Dissertations - 2 Matching Results

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Parental Socialization Value Change through Time and Space

Description: Parental socialization values are compared over sixty years by using data from the Denton Parent Project collected in 1989 and from similar questions asked of parents in Middletowri in 1924 and 1978, The objectives of the study were as follows: how have parental socialization values changed through time since the 1920s; has the impact of parental social class status on parental socialization values decreased over time; compare Alwin's study on obedience and autonomy to see how trend has changed from 1978 Middletown to 1989 Denton; and, finally, look at certain family structure variables to determine their influence. Today's parents emphasize social acceptance and a sense of social responsibility in child training practice. Social class still has an impact on parental socialization values but not as great as expected.
Date: December 1990
Creator: Chen, Yan, 1965-
Partner: UNT Libraries

Genic Differentiation and Evolution in the Ground Squirrel Subgenus Ictidomys (Spermophilus)

Description: The genetic structure of 26 natural populations of three species (S. tridecemlineatus, S. mexicanus, and S. spilosoma) of the Ictidomys subgenus of ground squirrels was analyzed using chromosomal and electrophoretic techniques. Chromosomal variation was not observed in S. mexicanus, and only slight karyotypic variation was found in the other two species. Chromosomal evidence indicated hybridization between S. tridecemlineatus and S. mexicanus, placing these species within the classical definition of semispecies. Analysis of electrophoretic variation at 29 genetic loci indicated close genetic relationships between these species. Evolution in Ictidomys appears to be linked with Pleistocene events, and speciation appears to have occurred within the last 155,000 years.
Date: December 1975
Creator: Cothran, E. Gus, 1951-
Partner: UNT Libraries