Development and validation of the oral presentation evaluation scale (OPES) for nursing students

BACKGROUND: Oral presentations are an important educational component for nursing students and nursing educators need to provide students with an assessment of presentations as feedback for improving this skill. However, there are no reliable validated tools available for objective evaluations of presentations. We aimed to develop and validate an oral presentation evaluation scale (OPES) for nursing students when learning effective oral presentations skills and could be used by students to self-rate their own performance, and potentially in the future for educators to assess student presentations. METHODS: The self-report OPES was developed using 28 items generated from a review of the literature about oral presentations and with qualitative face-to-face interviews with university oral presentation tutors and nursing students. Evidence for the internal structure of the 28-item scale was conducted with exploratory and confirmatory factor analysis (EFA and CFA, respectively), and internal consistency. Relationships with Personal Report of Communication Apprehension and Self-Perceived Communication Competence to conduct the relationships with other variables evidence. RESULTS: Nursing students’ (n = 325) responses to the scale provided the data for the EFA, which resulted in three factors: accuracy of content, effective communication, and clarity of speech. These factors explained 64.75% of the total variance. Eight items were dropped from the original item pool. The Cronbach’s α value was .94 for the total scale and ranged from .84 to .93 for the three factors. The internal structure evidence was examined with CFA using data from a second group of 325 students, and an additional five items were deleted. Except for the adjusted goodness of fit, fit indices of the model were acceptable, which was below the minimum criteria. The final 15-item OPES was significantly correlated with the students’ scores for the Personal Report of Communication Apprehension scale (r = −.51, p < .001) and Self-Perceived Communication Competence Scale (r = .45, p < .001), indicating excellent evidence of the relationships to other variables with other self-report assessments of communication. CONCLUSIONS: The OPES could be adopted as a self-assessment instrument for nursing students when learning oral presentation skills. Further studies are needed to determine if the OPES is a valid instrument for nursing educators’ objective evaluations of student presentations across nursing programs. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12909-022-03376-w.