Developmental Changes on Techniques for Daily Living (1) -Consciousness towards Necessity of Techniques- By the method of a questionnaire, 1,618 subjects (males 776, females 842) were asked to give their opinion about each of 66 items on techniques selected from daily living. There were 848 adults and 770 students among the 1,618 subjects; 266 students were from 2 junior high schools, 204 from a senior high school and 300 from a university. The results are as follows : 1. Consciousness towards necessity of techniques for daily living shows an upwad trend as the age increases. 2. The type of developmental changes of consciousness towards necessity of techniques are classified as : upward-type(A), downward-type(B) and the others-type(C). Upward-type(A) is the technique which is basic and needs knowledge and discernment. Downward-type(B) is that which is not always necessary and can be done with other techniques. 3. Sex differentiation is apparent already at the junior high school level, and it is concluded that girls show a higher score of necessity than boys. Some items show similar response for both sexes in respect of developmental grades. 4. The tendency of the developmental changes is similar between boys and girls on the whole. The number of items of the other-type(C) for boys are more than that for girls. Developmental changes of boys is not linear.
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