Concept map is a useful cognitive tool for enhancing a student's critical thinking (CT) by encouraging students to process information deeply for understanding. However, the evidence regarding its effectiveness on nursing students' CT is contradictory. This paper compares the effectiveness of concept mapping and traditional linear nursing care planning on students' CT. Methods: An experimental design was used to examine the CT of 60 baccalaureate students who participated in pediatric clinical

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... ursing course in the Shahrekord University of Medical Sciences, Shahrekord, Iran in 2013. Results: Participants were randomly divided into six equal groups of each 10 student, of which three groups were the control group, and the others were the experimental group. The control group completed nine traditional linear nursing care plans, whereas experimental group completed nine concept maps during the course. Both groups showed significant improvement in overall and all subscales of the California CT skill test from pretest to posttest (P < 0.001), but t-test demonstrated that improvement in students' CT skills in the experimental group was significantly greater than in the control group after the program (P < 0.001). Conclusions: Our findings support that concept mapping can be used as a clinical teaching-learning activity to promote CT in nursing students.