creators_name: Shao, Z. F. creators_name: Liu, Y. F. creators_name: Zhong, Y. P. type: journalp datestamp: 2007-08-20 lastmod: 2011-03-11 08:56:56 metadata_visibility: show title: Research on Problem Difficulty (in Chinese) ispublished: pub subjects: cog-psy full_text_status: public keywords: problem solving, problem difficulty, artificial problem abstract: This paper examines some sources of problem difficulty with the tool of a new type of artificial problems. The sources are: 1) the number of known variables: it has no effects on problem difficulty. 2) the number of unknown variables: problem difficulty will increase when it increases. 3) whether prompting the names are not prompted. 4) the arrangement of variables; problem difficulty will increase if variables are arranged in disorder. 5) the number of operations (processes) to choose; problem difficulty will increase when it increases. 6) the similarity of the operations to choose: problem difficulty will increase when operations are similar. 7) the style of presentation of the former problems; it can change the likelihood that the attributes of problems enter man’s sphere of consciousness; problem difficulty will increase when the attributes of the former problems are unlikely to enter man’s sphere of consciousness. date: 1996 date_type: published publication: Psychological Science volume: 19 pagerange: 278-281 refereed: FALSE citation: Shao, Z. F. and Liu, Y. F. and Zhong, Y. P. (1996) Research on Problem Difficulty (in Chinese). [Journal (Paginated)] document_url: http://cogprints.org/5657/1/Research_on_Problem_Difficulty.pdf