Abstract
Objectives The purpose of this study was to determine the effects of Problem-Based Learning class on problem solving ability, communication competency and critical thinking disposition in economics class.
 Methods In this study, PBL was applied to the Economic Analysis class for 8weeks. The subjects of this study were 23 students of one university. The collected data were analyzed by paired t-test with SPSS 27.0.
 Results After PBL classes, the subject’s problem solving ability(t=3.794 p=.001) was significantly improved. There was a significant difference in communication competency compared to before classes(t=2.415, p=.024). In addition, critical thinking disposition(t=3.372, p=.003) was significantly improved.
 Conclusions This study provides evidence that PBL class is effective teaching and learning method for problem solving ability, communication competency and critical thinking disposition in economics class.
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