https://vital.lib.tsu.ru/vital/access/manager/Index ${session.getAttribute("locale")} 5 Intrinsic motivation and achievement in mathematics in elementary school: a longitudinal investigation of their association https://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000547166 Wed 05 Dec 2018 09:40:05 KRAT ]]> Early risk factors of overweight developmental trajectories during middle childhood https://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000625573 Sat 12 May 2018 11:45:36 KRAT ]]> Why children differ in motivation to learn: Insights from over 13,000 twins from 6 countries https://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000528397 Mon 10 Dec 2018 16:08:23 KRAT ]]>