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Social and Behavioral Sciences Commons

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Portland State University

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Articles 91 - 95 of 95

Full-Text Articles in Social and Behavioral Sciences

The Effect Of Declining Timber Supplies And Productivity Increases In The Forest Products Industries Upon Employment In Douglas County, Oregon, Patrick L. Burden Jan 1977

The Effect Of Declining Timber Supplies And Productivity Increases In The Forest Products Industries Upon Employment In Douglas County, Oregon, Patrick L. Burden

Dissertations and Theses

This thesis examines some of the factors that will have significant impact upon employment in Douglas County, Oregon to the year 2000.

The major question this research attempts to answer is: Given a continuation of current policies and programs, what will future employment levels in the forest product industries and total employment levels in all industries in Douglas County be to the year 2000.


A Test Of The Simple Recessive Hypothesis For The Inability To Taste Phenyl-Thio-Urea: A Family Study, Susan I. Wolf Aug 1973

A Test Of The Simple Recessive Hypothesis For The Inability To Taste Phenyl-Thio-Urea: A Family Study, Susan I. Wolf

Dissertations and Theses

This thesis is a report on the analysis of family data gathered to test the simple recessive hypothesis for the inability to taste phenyl-thio-urea (P.T.C.). The simple recessive hypothesis states that the inability of a minority of persons to taste high concentrations of P.T.C. is due to the action of an autosomal recessive gene in the homozygous condition.


Behavioral Changes Due To Overpopulation In Mice, James Robert Hammock Jul 1971

Behavioral Changes Due To Overpopulation In Mice, James Robert Hammock

Dissertations and Theses

Previous research has found that if a population were allowed to exceed a comfortable density level, then many catastrophic events occurred such as increased mortality among the young, cannibalism, homosexuality, and lack of maternal functions. The most influential researcher in this area is Calhoun (1962), after whose experimental design a pilot study was fashioned to replicate his results. The results of this pilot study inspired a more detailed research project of which this thesis is an account.

Forty-eight albino mice of the Swiss Webster strain were divided into three groups of sixteen each. Each group consisted of ten females and …


"The Development Of Social Behavior In Primates", Robert A. Hinde Apr 1971

"The Development Of Social Behavior In Primates", Robert A. Hinde

Special Collections: Oregon Public Speakers

No abstract provided.


"The Population Explosion And Ecology", Paul R. Ehrlich Nov 1968

"The Population Explosion And Ecology", Paul R. Ehrlich

Special Collections: Oregon Public Speakers

No abstract provided.