Abstract
The most remarkable learning effects on five-year-old children have been reported previously, as the results of experimental learning of tying strings (Mamusubi-square knot) among elementary school pupils (6 and 7 years old) and preschool children (4 and 5 years old). The same experiments were conducted during September l992 and January 1993 on three-year-old children (45 subjects in preschool and 6 subjects at home) for the purpose of investigating lower age limit of such learning effects. The present studies showed that it was difficult for the subjects to perform correct tying. Based on such results, it is presumed that in general, those who can perform correct tying among three-year-old children are very few even after long period of practice.
