This research is a quantitative research. The concept, theory of reasoned action and the findings mentioned in chapter 2 and applied as a guide to research attitudes and intentions to quit smoking of High Vocational Students Streesiriket as follows.
3.1 Research Model
3.2 Population
3.3 How to select the sample and the sample size
3.4 The instruments used to collect data
3.5 How to store data preparation and data analysis.