Higher self-control capacity predicts lower anxiety-impaired cognition during math examinations

We assumed that self-control capacity, self-efficacy, and self-esteem would enable students to keep attentional control during tests. Therefore, we hypothesized that the three personality traits would be negatively related to anxiety-impaired cognition during math examinations. Secondary school students (N = 158) completed measures of self-control capacity, self-efficacy, and self-esteem at the beginning of the school year. Five months later, anxiety-impaired cognition during math examinations was assessed. Higher self-control capacity, but neither self-efficacy nor self-esteem, predicted lower anxiety-impaired cognition 5 months later, over and above baseline anxiety-impaired cognition. Moreover, self-control capacity was indirectly related to math grades via anxiety-impaired cognition. The findings suggest that improving self-control capacity may enable students to deal with anxiety-related problems during school tests.

Changing ecology of Lake Victoria cichlids and their environment: evidence from C13 and N15 analyses

Eutrophication is an increasing global threat to freshwater ecosystems. East Africa’s Lake Victoria has suffered from severe eutrophication in the past decades which is partly responsible for the dramatic decline in haplochromine cichlid species diversity. However, some zooplanktivorous and detritivorous haplochromine species recovered and shifted their diet towards macro invertebrates and fish. We used four formalin preserved cichlid species caught over the past 35 years to investigate whether stable isotopes of these fish are reflecting the dietary changes, habitat differences and if these isotopes can be used as indicators of eutrophication. We found that d15N signatures mainly reflected dietary shifts to larger prey in all four haplochromine species. Shifts in d13C signatures likely represented habitat differences and dietary changes. In addition, a shift to remarkably heavy d13C signatures in 2011 was found for all four species which might infer increased primary production and thus eutrophication although more research is needed to confirm this hypothesis. The observed temporal changes confirm previous findings that preserved specimens can be used to trace historical changes in fish ecology and the aquatic environment. This highlights the need for continued sampling as this information could be of essence for reconstructing and predicting the effects of environmental changes.

Improving math and science assessment : report on the Secretary's third conference on mathematics and science education /

"PIP 94-1201"--P. [4] of cover.

Development of the DEPLOY computer math model for the investigation of various airbag and crash parameters on the out-of-position occupant. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Histoire générale des mathḿatiques depuis leur origine jusqu'à l'année 1808.

The table, by M. Bonnycastle, is taken from his English translation of the 1st edition.

Department of Education : the Eisenhower Math and Science State Grant Program : report to the Chairman, Subcommittee on Elementary, Secondary, and Vocational Education, Committee on Education and Labor, House of Representatives /

"November 1992."

Geschichte der antiken philosophie, von Karl Jöel. Erster band.

No more published.

Set theory and metric spaces. Math. 261, autumn, 1950.

Cover title.

Differentiable manifolds. [Notes] Math 354 A, Spring 1952.

Mode of access: Internet.

Math/science : Peace Corps, an ACTION program.

Mode of access: Internet.

Secondary math and science education [microform] : hearing before the Subcommittee on Science, Research, and Technology of the Committee on Science and Technology, U.S. House of Representatives, Ninety-seventh Congress, second session, May 7, 1982.

"No. 169."

Introduction to differential geometry : [notes for Math. 140, Dept. of Mathematics, University of Chicago /

Caption title.

Semper Pauperes habetis vobiscum, me autem non semper habetis, Math. C. XXVI.V.n. /

Plancha nº 23 de la obra: Schola Italica Picturae. Número de la página en el ángulo superior derecho.

Illinois Standards Achievement Test sample math materials.

Cover title.