Human capital is increasingly believed to play an important role in the growth process; however, adequately measuring its stock remains controversial. Because the estimated impact that human capital has on economic growth is sensitive to the measures or proxies of human capital, accurate and consistent measures of human capital are needed. While many measures of human capital have been develope...

Tinto’s [Rev. Educ. Res. 45 (1975) 89; Tinto, V. (1987). Leaving college. Chicago: The University of Chicago Press; Tinto, V. (1993). Leaving college: rethinking the causes and cures of student attrition. Chicago: The University of Chicago Press] student integration model and Bean and Metzner’s [Rev. Educ. Res. 55 (1985) 485] student attrition model have been influential in explaining persisten...

1 2 Characterization of motor unit recordings in mice 3 4 5 6 7 8 Laura K. Ritter, Matthew C. Tresch, C.J. Heckman, Marin Manuel, Vicki M. 9 Tysseling 10 11 12 13 14 15 16 1 McCormick Biomedical Engineering Department, Northwestern University, Evanston, 17 IL, USA 60208 18 19 2 Physiology Department, Feinberg School of Medicine, Northwestern University, 20 Chicago, IL, USA 60611 21 22 3 Departm...

Genetic differentiation and heterozygosity in pinyon pine associated with herbivory and environmental stress. Evolution 45: 989–999. Okasha S. 2008. Evolution and the levels of selection. Oxford, UK: Oxford University Press. Parrent JL, Peay K, Arnold AE, Comas LH, Avis P, Tuininga A. 2010. Moving from pattern to process in fungal symbioses: linking functional traits, community ecology, and phy...