其他摘要：This research had the objectives to 1) develop an enrichment curriculum for developing life skills in the prevention of sexual problems for school girls in lower secondary schools, and 2) evaluate the efficiency of the enrichment curriculum for developing life skills in the prevention of sexual problems for school girls in lower secondary schools. The research was conducted in 4 stages. Stage1: Study, survey, and synthesis of fundamental data. The samples were 73 teachers of Health and Physical Education Learning Substance Group in schools under the Secondary Educational Service Area Office 3 in ChangwatPhranakhon Si Ayutthaya. The instrument was a survey-type questionnaire. The data was analyzed by mean and percentage. Stage 2: Building an enrichmentcurriculum. The target group was 10 experts. The instrument was a concordance evaluation form of the enrichment curriculum draft and its appropriateness. The data was analyzed by content validity index, mean and standard deviation. Stage 3: Examination of the enrichment curriculum efficiency using one group pretest-posttest experimental design. The samples were 30 Matayomsuksa 2 school girls of Bangsaiywitthaya School. The instrument consisted of enrichment curriculum, knowledge and understanding assessment, behavioral evaluation form, and attitudes questionnaire. The data was analyzed by the efficiency values of the enrichment curriculum (E1/E2) criterion of 80/80, t-value, mean and standard deviation. And Stage 4: Improving the enrichment curriculum. The key informants were the trainers who conducted learning activities. Their recommendations were used to improve the curriculum to be more complete. The research results found as follows. 1. The development of enrichment curriculum for life skills development of prevention of sexual problems for school girls in lower secondary schools had 5 components of life skills development of prevention of sexual problems: Component 1: Building relationships and communication, Component 2: Emotion management, Component 3 : Self-esteem, Component 4 : Critical thinking skills, and Component 5: Health care. They had the appropriateness at the high level and had explicit accordance and relations with the development of the enrichment curriculum. 2.The evaluation of the enrichment curriculum efficiency found that 1) The enrich curriculum having the marks of during learning activities management and post learning activities management (E1/E2) of 91.05/90.67, which were higher than the criterion of 80/80. The understanding marks after learning activities management were significantly higher at .05 level than those before learning activities management. 3) The behavioral prevention of sexual problems of the school girls was significantly higher at .05 level than the mean criterion of 3.50 in every aspect. 4) The attitudes on the enrichment curriculum were significantly higher at .05 level than the mean criterion of 3.50 in every item.
