| dc.description.abstract | Left-handed is a natural behaviour in human populations. The frequency of
left-hander seems highly variable in societies and always at a lower frequency
compared with right-hander. The aim of this study is to determine the frequency
of children age 7 to 21 years old in Blora, Central Java and to collect the data on
their hand precision and power grip. The respondents were elementary students,
junior high school students, high school students and undergraduate students (age
7-21 years old). Subjects were measured with Rife methods, power grip, and
precision grip. Total frequency left-handed children were 5.2% in Blora. The
frequency of left-hander in Blora have a similarity with the frequency of lefthander
in Bogor, but the frequency of left-hander in Blora is lower when
compared with the previous study in Padang. The result indicates that the
frequency of left-hander grows smaller at older groups. Higher education, cultural,
social pressure and environment influences suppress left-handed behaviour. | id |
