The Relative Importance of Intelligence and Motivation as Predictors of School Achievement: A meta-analysis

Publication date: Available online 12 October 2018Source: Educational Research ReviewAuthor(s): Katharina Kriegbaum, Nicolas Becker, Birgit SpinathAbstractThis meta-analysis summarizes 74 studies (N = 80,145) that simultaneously examined the predictive power of intelligence and motivation for school achievement. First, we found average correlations between intelligence (r = .44) and motivation (r = .27) with school achievement and between intelligence and motivation (r = .17). Moderator analyses showed that the correlation between motivation and school achievement was higher for expectancies than for values. No moderator effects were found for grade level, school form or gender. Second, in a path model, 24% of variance in school achievement was explained overall. From this overall explained variance in school achievement, 66.6% was uniquely explained by intelligence and 16.6% uniquely by motivation, whereas the two predictors commonly explained 16.6%. Thus, the results show that both intelligence and motivation contribute substantial, unique shares to the prediction of school achievement as well as an additional share of commonly explained variance.
Source: Educational Research Review - Category: Child Development Source Type: research

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Source: Stem Cell Reports - Category: Stem Cells Source Type: research
Publication date: Available online 18 April 2019Source: Stem Cell ReportsAuthor(s): Fani Papagiannouli, Cameron Wynn Berry, Margaret T. FullerSummaryTissue homeostasis and repair relies on proper communication of stem cells and their differentiating daughters with the local tissue microenvironment. In the Drosophila male germline adult stem cell lineage, germ cells proliferate and progressively differentiate enclosed in supportive somatic cyst cells, forming a small organoid, the functional unit of differentiation. Here we show that cell polarity and vesicle trafficking influence signal transduction in cyst cells, with pro...
Source: Stem Cell Reports - Category: Stem Cells Source Type: research
Publication date: Available online 18 April 2019Source: Stem Cell ReportsAuthor(s): Yefim Zaltsman, Sayaka Masuko, Joshua J. Bensen, Laura L. KiesslingSummaryLeveraging the extraordinary potential of human pluripotent stem cells (hPSCs) requires an understanding of the mechanisms underlying cell-fate decisions. Substrate elasticity can induce differentiation by signaling through the transcriptional coactivator Yes-associated protein (YAP). Cells cultured on surfaces mimicking brain elasticity exclude YAP from their nuclei and differentiate to neurons. How YAP localization is controlled during neural differentiation has bee...
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Publication date: July 2019Source: Physica E: Low-dimensional Systems and Nanostructures, Volume 111Author(s): Rozalina Zakaria, Siti Munirah Che Noh, Dalibor Petković, Shahaboddin Shamshirband, Richard Penny
Source: Physica E: Low dimensional Systems and Nanostructures - Category: Nanotechnology Source Type: research
Publication date: July 2019Source: Physica E: Low-dimensional Systems and Nanostructures, Volume 111Author(s):
Source: Physica E: Low dimensional Systems and Nanostructures - Category: Nanotechnology Source Type: research
Publication date: May 2019Source: Colloid and Interface Science Communications, Volume 30Author(s): Iori Yamada, Motohiro TagayaAbstractImmobilization of 2,2′-bipyridine-5,5′-dicarboxylic acid (Bpdc) into layered octacalcium phosphate was investigated in the hydrolysis process of α-tricalcium phosphate. 100 interlayer distance altered from 1.9 to 2.5–2.7 nm by the immobilization, suggesting the novel inorganic/organic nanohybrids. The nanohybrids exhibited the blue-shifted photoluminescence peaks with the higher internal quantum efficiency as compared with the case in the Bpdc alone.Graphical abstract
Source: Colloids and Interface Science Communications - Category: Nanotechnology Source Type: research
Publication date: Available online 18 April 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): H. Felhi, M. Smari, A. Bajorek, K. Nouri, E. Dhahri, L. BessaisAbstractIn this work, a novel series of multiferroic materials BiMn2O5 doped by Neodyme has been prepared by a sol-gel method at low temperature. The crystallographic studies using X-ray diffraction and Rietveld Refinement techniques showed the formation of single-phase samples for all compositions, crystallizing in a mullite-type orthorhombic perovskite structure, space group Pbam (Z = 4). The SEM techniques confirmed the formation of sing...
Source: Progress in Natural Science: Materials International - Category: Materials Science Source Type: research
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Source: Materials Science and Engineering: A - Category: Materials Science Source Type: research
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Source: Materials Science and Engineering: A - Category: Materials Science Source Type: research
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