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Longitudinal Predictive Validity of a Learning Potential Test
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marié de Beer --- University of South Africa,The aim of this article is to provide empirical psychometric evidence of the (longitudinal) predictive validity of a learning potential measure—the Learning Potential Computerised Adaptive Test (LPCAT)—in comparison with standard static tests with school aggregate results as the criterion measure... -
Initial Review of the Psychometric Properties of a Computerised Career Preference Test for Career Guidance Assessment
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marié de Beer --- University of South Africa,Psychometric proprties of the Career Preference Computerised Adaptive Test (CPCAT) (De Beer & Marais, 2010; De Beer, Marais, Maree, & Skrzypczak, 2008) are reported. Participants were high school students (n=343; males=279, females=164)at Grade 9 and Grade 11 level from a... -
Morphometric characterisation of Scutellonema bradys populations from the Guinea Savanna and Transitional Rain Forest ecological zones of Ghana
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Seloame Tatu Nyaku --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Yahaya Saaka Jamani --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Eric Cornelius --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Hanif Lutuf --- Department of Crop Science, College of Basic and Applied Sciences, GhanaYam (Dioscorea spp.) forms a large portion of Ghanaian diets and is cultivated in most regions. However, yam is highly susceptible to parasitism by the yam nematode, Scutellonema bradys. Ten major yam communities from 10 districts (Yendi, Karaga, East Gonja,... -
Amplified Fragment Length Polymorphism (AFLP) Based Genetic Diversity Studies in Betel Vine (Piper betle L.)
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Shalini Goyat --- Department of Biotechnology Engineering, Anita Grewal --- Department of Biotechnology Engineering, K. Hima Bindu --- Section of Medicinal Crops, Devendra Singh --- CSIR National Botanical Research Institute, R.S. Katiyar --- CSIR National Botanical Research Institute, S.K. Tewari --- CSIR National Botanical Research Institute, Rakesh Nainwal --- CSIR National Botanical Research Institute,Betel vine has been identified as an important cash crop in India. It is a vegetatively propagated plant and more than 100 landraces (cultivars) are cultivated in India. They are often named after the localities where they are grown. To... -
Assessment of heavy metals pollution in surface and groundwater systems in Oued Righ region (Algeria) using pollution indices and multivariate statistical techniques
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ML Benhaddya --- , Algeria Y Halis --- , Algeria B Hamdi-Aïssa --- , AlgeriaSurface and groundwater samples of the Oued Righ region (south-eastern Algeria) were analysed for Cd, Cr, Cu, Mn, Ni, Pb and Zn by atomic absorption spectrophotometric method. An integrated approach of pollution evaluation indices and multivariate statistical methods (one-way ANOVA,...