[Comparative evaluation of the mental work capacity of 7th-grade schoolchildren who started school at the ages of 6 and 7 years].
D000124:Achievement; D002648:Child; D004521:Educational Measurement; D006801:Humans; D007361:Intelligence Tests; D008570:Memory, Short-Term / Q000502:physiology; D008606:Mental Processes / Q000502:physiology*; D014586:USSR; D014936:Word Association Tests
Sravnitel'naia otsenka umstvennoi rabotosposobnosti shkol'nikov 7-go klassa, nachavshikh obuchenie v 6 i 7 let.