How coaching training transforms nurses' behaviour: The effectiveness of coaching training according to objective measures

AIM: To evaluate the transition of behavioural changes of participants before and after the training using a scale that can objectively evaluate coaching training for nurses. DESIGN: After a cross‐sectional study, a quasi‐experimental study was conducted. METHODS: We examined the reliability and validity of the Coaching Skill Assessment plus (CSAplus), which was developed to measure the effectiveness of coaching training for corporate leaders. Next, a repeated measures analysis of variance was conducted on two types of coaching training for nurses conducted at a university hospital, with the CSAplus scores of participants before, 1 month and 6 months after the training as the dependent variable. RESULTS: The CSAplus is a three‐factor instrument with good reliability and validity. Participants' CSAplus scores improved after training, but there were differences in the magnitude and persistence of the training effects. PUBLIC CONTRIBUTION: Hospital staff, professional coaches and their clients were involved in data collection.