(10)  TI: APPERCEPTION IN CHESS PLAYERS LONG-RANGE PLANNING
      AU: SAARILUOMA_P, HOHLFELD_M
      NA: UNIV HELSINKI,DEPT PSYCHOL,FABIANINKATU 28,SF-00100 HELSINKI 
          10,FINLAND
          UNIV TUBINGEN,DEPT PSYCHOL,W-7400 TUBINGEN 1,GERMANY
      JN: EUROPEAN JOURNAL OF COGNITIVE PSYCHOLOGY 1994 Vol.6 No.1 pp.1-22
      AB: Chess players' long-range planning or chess-strategic thinking is 
          based on more or less poorly definable and intuitive notions such 
          as weak-square, initiative, space advantage, etc. Since these 
          concepts are fuzzy and thus close to everyday concepts, chess 
          players' long-range planning provides a good environment to study 
          apperception with poorly definable notions. The three experiments 
          provided data indicating that problem subspace abstraction has 
          both benefits and costs. Active representation blockades 
          alternative representations unless subjects restructure. As a 
          result, chess players often make serious cognitive errors by 
          abstracting the wrong problem subspaces. Even in strategical 
          positions, the problem subspaces generated are self-consistent 
          and bound by unconscious content-specific principles.
      KP: SKILL