The Relation of Infants' Home Environments to Mental Test Performance at Fifty-Four Months: A Follow-Up Study

1976 ◽  
Vol 47 (4) ◽  
pp. 1172 ◽  
Author(s):  
Robert H. Bradley ◽  
Bettye M. Caldwell
Keyword(s):  
Test Performance ◽  
Home Environments ◽  
Mental Test ◽  
Follow Up Study

Teenage job aspirations and career attainment in adulthood: A 17-year follow-up study of teenagers who aspired to become scientists, health professionals, or engineers

2001 ◽  
Vol 25 (2) ◽  
pp. 124-132 ◽  
Author(s):  
Ingrid Schoon
Keyword(s):  
Test Performance ◽  
School Environment ◽  
Parental Education ◽  
Contextual Factors ◽  
Social Background ◽  
Ability Test ◽  
Follow Up Study ◽  
Career Attainment ◽  
Nationally Representative

A longitudinal perspective was taken to investigate the predictive validity of teenage job aspirations, and the relative impact of individual and contextual factors on the formulation and realisation of career aspirations at age 16. The follow-up study of a nationally representative cohort of 7649 individuals born in the United Kingdom showed that teenage job aspirations predict specific occupational attainments in adulthood. Job aspirations expressed in adolescence differed between the sexes, and were related to parental education, teacher-ratings and self-ratings of ability, test scores in mathematics, and the school environment. Occupational attainment at age 33 was significantly related to the job aspirations expressed at age 16, but also to the belief in one’s own ability, mathematical test performance, specific personality characteristics, as well as social background and gender. It is concluded that for the understanding of occupational development across the lifespan both individual and contextual factors have to be considered.

Electron Microscopy of Human Gallstones

1971 ◽  
Vol 29 ◽  
pp. 296-297
Author(s):  
C. Wolpers ◽  
R. Blaschke
Keyword(s):  
Electron Microscopy ◽  
Room Temperature ◽  
Bile Pigment ◽  
X Ray Diffraction ◽  
Triclinic Crystal System ◽  
X Ray ◽  
Follow Up Study ◽  
Infra Red ◽  
Main Components

Scanning microscopy was used to study the surface of human gallstones and the surface of fractures. The specimens were obtained by operation, washed with water, dried at room temperature and shadowcasted with carbon and aluminum. Most of the specimens belong to patients from a series of X-ray follow-up study, examined during the last twenty years. So it was possible to evaluate approximately the age of these gallstones and to get information on the intensity of growing and solving.Cholesterol, a group of bile pigment substances and different salts of calcium, are the main components of human gallstones. By X-ray diffraction technique, infra-red spectroscopy and by chemical analysis it was demonstrated that all three components can be found in any gallstone. In the presence of water cholesterol crystallizes in pane-like plates of the triclinic crystal system.

A 10-year follow-up study of fixed metal ceramic prosthodontics

1997 ◽  
Vol 24 (10) ◽  
pp. 713-717 ◽  
Author(s):  
R. NAPANKANGAS ◽  
M.A.M. SALONEN ◽  
A.M. RAUSTIA
Keyword(s):  
Follow Up Study ◽  
Metal Ceramic
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