共 50 条
- [1] STUDENTS TASK-DIFFICULTY AND ACHIEVEMENT IN MATHEMATICS ON PROBLEMS OF MEDIUM TASK-DIFFICULTY PSYCHOLOGIE IN ERZIEHUNG UND UNTERRICHT, 1982, 29 (02): : 76 - 80
- [3] TASK-DIFFICULTY AND TASK-PERFORMANCE IN AUTISTIC-CHILDREN JOURNAL OF CHILD PSYCHOLOGY AND PSYCHIATRY AND ALLIED DISCIPLINES, 1979, 20 (04): : 271 - 285
- [7] TASK-DIFFICULTY AND MOTOR-PERFORMANCE IN SEVERE SUBNORMALITY JOURNAL OF MENTAL DEFICIENCY RESEARCH, 1976, 20 (DEC): : 261 - 265
- [8] MARIJUANA, AGING, AND TASK-DIFFICULTY EFFECTS ON PILOT PERFORMANCE AVIATION SPACE AND ENVIRONMENTAL MEDICINE, 1989, 60 (12): : 1145 - 1152