?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Research+on+Problem+Difficulty+(in+Chinese)&rft.creator=Shao%2C+Z.+F.&rft.creator=Liu%2C+Y.+F.&rft.creator=Zhong%2C+Y.+P.&rft.subject=Cognitive+Psychology&rft.description=This+paper+examines+some+sources+of+problem+difficulty+with+the+tool+of+a+new+type+of+artificial+problems.+The+sources+are%3A+1)+the+number+of+known+variables%3A+it+has+no+effects+on+problem+difficulty.+2)+the+number+of+unknown+variables%3A+problem+difficulty+will+increase+when+it++increases.+3)+whether+prompting+the+names+are+not+prompted.+4)+the+arrangement+of+variables%3B+problem+difficulty+will+increase+if+variables+are+arranged+in+disorder.+5)+the+number+of+operations+(processes)+to+choose%3B+problem+difficulty+will+increase+when+it+increases.+6)+the+similarity+of+the+operations+to+choose%3A+problem+difficulty+will+increase+when+operations+are+similar.+7)+the+style+of+presentation+of+the+former+problems%3B+it+can+change+the+likelihood+that+the+attributes+of+problems+enter+man%E2%80%99s+sphere+of+consciousness%3B+problem+difficulty+will+increase+when+the+attributes+of+the+former+problems+are+unlikely+to+enter+man%E2%80%99s+sphere+of+consciousness.&rft.date=1996&rft.type=Journal+(Paginated)&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F5657%2F1%2FResearch_on_Problem_Difficulty.pdf&rft.identifier=++Shao%2C+Z.+F.+and+Liu%2C+Y.+F.+and+Zhong%2C+Y.+P.++(1996)+Research+on+Problem+Difficulty+(in+Chinese).++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F5657%2F