Findings revealed that the majority of students in both groups were female and unmarried, with no occupation or experience at group work. They mostly lived with their parents. Chi-square and Mann-Whitney tests showed no significant difference between the two groups in the above variables as well as age, average score of the previous term and units passed (P>0.05).
Table 1 shows the mean scores of clinical report forms in both groups. Paired t-test showed a significant difference between the scores of the control and experimental groups (P = 0.0001). In table 2, the mean scores of each critical thinking skill in both groups are presented. Mann-Whitney test and t-test showed a significant difference between the scores of the two groups, except for seeking information (P = 0.0001). Table 3 provides the total scores of critical thinking abilities in both groups. These scores showed a significant difference between the control and experimental groups, verified by paired t-test (P = 0.0001). Additionally, diagram 1 shows the difference between critical thinking abilities in both groups.