調査目的

  1. Purposes of the researchTo conduct a quantitative research on the Japanese people’s sexual awareness and sexual behavior, document the findings, make them available to the public both in and out of the country, and provide convenience to the media, educational and medical institutions, government, and other relevant establishments. By doing so, toincrease objective and accurate awareness regarding sex and its issues, which tend to get distorted by exaggerations, caricatures, and imposition of social norms, and to identify the differences in sexual awarenessbetween the sexes and different age groups.
  2. Research method
    1. Regions where the research was conductedTokyo and its surrounding prefectures (Tokyo, Chiba, Saitama, Kanagawa)
    2. Target populationMen and women between 16 and 59 who answered “1 or more person(s)” in Q15 regarding sex experience
    3. Research methodInternet survey
    4. Extraction methodRandom sampling by the Internet survey panel
    5. Research period July 29, 2011 (Fri) – Aug 3, 2011 (Wed)
    6. Number of valid samples collected1,000 samples
  3. Research topics
    1. Awareness on romance, marriage, children, sex
    2. Sex experience
    3. First sex experience
    4. Sex in the past year
    5. Masturbation
    6. Use of toys
    7. Pregnancy, birth control, sex diseases, and prevention
    8. Brothel (sex services) and sex offense victims
      * the definition of “sex” in this survey was left to the respondents
  4. Analysis of Survey Findings
    1. The percentages = the number of respondents (the number of samples for each question) is considered100%, and the figures in the findings and charts are rounded to one decimal place. Consequently, the totalpercentage may not always add up to 100%.
    2. For questions with multiple answers, the total sometimes exceeds 100%.
    3. In the findings, some answers are a combination of two or more answers. The ratio in such cases is derived from the total number of respondents, therefore the subtotal of some multiple answers do not match the figures in the findings.
    4. Analysis was difficult when there were less than 30 respondents for a question, therefore many of them are not mentioned in the notes but are included in the charts for reference.
  5. Response attributes (N=1,000)