The survey research aimed to: 1) study the behaviors of self-directed learning; 2) compare levels of self-directed learning behaviors which is classified by personal status; and 3) study guidelines for self-directed learning. The subject obtained through stratified random sampling consisted of 319 first-fourth year undergraduates of the Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon. The research tool was a questionnaire. The frequency percentage mean standard deviation t-test and ANOVA were used for data analysis and hypothesis testing. The results were as follows: 1. The overall level of students’ behaviors for self-directed learning was high (X = 3.74; S.D.= 0.74) that were self-evaluation competency (X = 3.89; S.D.= 0.74) self-management competency (X = 3.75; S.D.=0.76) self-learning competency (X = 3.74; S.D.=0.70) self-searching competency (X = 3.72; S.D.=0.72) and characteristics of self-directed learners (X = 3.59; S.D.=0.77) respectively. 2. There was no difference of self-directed learning behaviors when genders and educational levels were considered. In contrast there were statistically significant difference at 0.05 when academic performance was considered. 3. The overall level of students’ opinions on guidelines for self-directed learning was high (X = 3.51;S.D.= 0.85) self-directed was academic matter (X = 3.74; S.D.=0.76) physical matter (X = 3.41 ; S.D.=0.93) management (X = 3.40; S.D.=0.87) respectively.

This research were to study learning behavior and the relationship between learning behavior and academic achievement of students in taxation. The samples were students who studying management at the faculty of Business Administration and Liberal Art at RMUTL-Nan. The instruments for collecting data were behavior observation and tests. The statistical methods for analyzing data were mean and Pearson Product-Moment Correlation Coefficient. The results showed that the students’ learning behavior in taxation was at good level but the average achievement was moderate score: 63.81 out of 100 scores (C). The students’ learning behavior of five domains found that the intention of punctuality timely attention responsibility and attendance were good. Their understanding behavior was moderate. There was positive statistically significant relationship between learning behaviors and academic achievement of students in taxation at 0.01 levels. The correlation coefficient was 0.703.The learning behaviors could predict the academic achievement as 49.40 percent.