Assessing critical thinking in baccalaureate nursing students: a longitudinal study.

The purpose of this study was to evaluate the attainment of critical thinking skills of students before and after curriculum revision of a baccalaureate nursing program. The California Critical Thinking Skills Test (CCTST) was used to measure the critical thinking ability of the students at program entry, midpoint, and at exist. The sample consisted of three cohorts of students: cohort 1 (n = 55) was the baseline class before curriculum revision, whereas cohorts 2 (n = 55) and 3 (n = 73) were the first two classes to experience the revised curriculum. The results revealed that cohort 2 achieved significantly higher critical thinking scores than the baseline cohort. Cohort 2 also improved dramatically on all subscales from test 1 to test 3. However, cohort 3 failed to demonstrate improved critical thinking scores over time. Findings have implications for measuring critical thinking.