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Investigates the motor control and coordination of the hand and fingers among young children. Relationship between the manipulation of scissors and chronological age; Determination of sex, individual and personality differences; Methods for scoring graded papers for accuracy.

Although sociologists have long concerned themselves in one way or an- other with conformity, neither they nor psychologists have made systematic paper and pencil studies of conforming behavior. The chief weakness of the paper in any study of behavior is that the symbolized responses of a subject in a test situation may not truly indicate his response in a situation calling for non-symbolized action. This weakness does not render paper and pencil studies worthless, however. In order to determine the cross-sectional consistency of individual conformity, each subject's number of conformity answers out of the twenty-five situations was totaled. Each male individual's score was then placed in his appropriate category for age, community, and occupation, and the arithmetic mean and median computed for each grouping. In the absence of any technique in the present study to parcel out these possible factors, it is assumed for the present that part of the variation in the amount of cross- sectional consistency of conformity responses displayed by individuals of various groupings is due to the effect of prevailing ideologies and conduct norms on individual behavior.

This paper presents an optimal-control-theory model that maximizes the present value of future earnings for an individual--particularly a poor one. Income is assumed to be a function of age and education level, and the rate of schooling is the control variable. A linear tax function is assumed that admits a negative income tax. In spite of numerous difficulties in measuring certain parameters, regression analysis is used to fit income data to age and education level. Then some specific functions for the optimal education plan are derived for different parameter values. The sensitivity of the model to changes in certain controllable and noncontrollable parameters is analyzed, and some implications for government policy are found. [ABSTRACT FROM AUTHOR]

The purpose of the present paper is to examine, in the light of data on certain aspects of the population of the U.S., the various hypothesis concerning the proportion of population 15 to 49 years of age enumerated by scholar A.G. Sundbärg before the Institut Internationale de Statistique nearly forty years ago. Since that time the question has been practically ignored in the U.S. In the course of a brief paper devoted primarily to the relationship of the age distribution of a population to its death rate, the following hypothesis about the age group 15-49 were stated. Examination of many units of the U.S. population might be made with profit in order to determine the truth of the first hypothesis, namely, that the middle age group constitutes one-half of the population. The theory that emigration reduces the percentage of population 15-49 years of age can be studied for the U.S. by determining the percentage 15-49 years of age in States of which the smallest proportion of persons originally born within their borders were living there in 1930. Other measures of emigration would also be desirable, such as the percentage of emigration in the decade from 1920 to 1930, or between 1900 and 1930, but the total migration of living native white persons, regardless of the date of migration, is probably a satisfactory simple index for the purpose.

This paper attempts to bring together the demographic literature on differential migration with economic analysis of regional labor mobility. This is done by estimating a rather simple form of economic model of migration by means of linear regression analysis for specific age, education and occupation groups of male interprovincial migrants in Canada. The data on migration are from the population sample of the 1961 Census of Canada. The pattern of migration differentials displayed by these data is broadly similar to that observed in the United States and elsewhere. The regression results suggest that differential migration by education and occupation groups may be accounted for by the varying responsiveness of the various groups to economic gains obtained through migration. While this seems to be generally true of age differentials as well, the relationship of those to regional income differentials is weaker and points up an important role of motivations other than economic gain. [ABSTRACT FROM AUTHOR]

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The paper examines differential attitudes toward the use in war of nuclear weapons among age strata, analyzed from the perspective of political generations. Data for the study came from a probability sample of 477 adults living in a metropolitan area. On the basis of historical events and the differing climates of public opinion pertaining to war, three political generations are discriminated: Dissent (those born 1943-1949), Gold War (those born 1927-1942), and World War II (those born before 1927). Results suggest the viability of political generations thus defined. The generation of Dissent is most likely to reject nuclear war, while those of the generation of World War II are most .likely to accept nuclear warfare. The basic relationship between age and attitudes toward nuclear war is examined within the context of occupation, sex, fear of communism, and patriotism. [ABSTRACT FROM AUTHOR]

The prominent East-to-West gradient in state divorce rates has frequently been partially attributed to an ecological factor called "frontier atmosphere," which incorporates the effects of mobility on social integration. This paper employs linear statistical procedures to show that, after adjustment of state divorce rates for age distribution, the percent ever married among teenage females is the best statistical predictor of 1960 and 1970 divorce rates, whereas "frontierness," conventionally measured by population mobility, is shown to have negligible effect, controlling for other selected legal and nonlegal factors. This finding suggests that previous ecological studies of divorce have overemphasized the effect of mobility and social stability on geographic divorce rate differentials, perhaps due to the neglect of demographic variables such as age distribution and especially age at marriage. [ABSTRACT FROM AUTHOR]