Two change theories for an EBP intervention guide

Three questions in two sentences, and the third one cannot be answered at a desk. "Has your preceptor used either theory, and to what result" is empirical: it requires you to ask a person and report what they say. That is the part most posts fudge, usually with a sentence about how the preceptor supports evidence-based practice generally, and it is the part an assessor can most easily tell has not been done. Ask the question directly and specifically — not "do you use change theory" but "when the unit moved to the new protocol, was there a plan for how staff would be brought along, and what happened?" Preceptors rarely name a theory even when they have used one, so listen for the structure and identify it yourself: a period of preparation before the change is Lewin's unfreezing whether or not anyone called it that.

The comparison has to be filtered through your own intervention, which rules out a generic contrast. The question is not which theory is better; it is which makes most sense for implementing this specific change on this specific unit. That means the choice should follow from features of your project. Lewin's three stages suit a discrete change with a clear before and after — a protocol replacing a protocol. Kotter's eight steps suit a change needing broad buy-in across roles, because half its steps are about coalition and communication. Rogers' diffusion of innovations suits a change adopted individual by individual rather than mandated, which is often the case for a practice a nurse can choose to use. Say what it is about your intervention — its scale, whether it is mandated, how many disciplines it touches, how long it will take — that makes one fit better.

The post is short and the sources requirement is only two, which means the temptation to summarise both theories in full should be resisted. One or two sentences each on the mechanism is enough, and then you go straight to the fit argument and the preceptor's answer. A reader who wanted a description of Lewin's model would not have set this question; what they cannot get anywhere else is your account of why it does or does not suit your unit. What earns the marks is the reasoning connecting your intervention's characteristics to a theory's strengths, plus the honesty of the preceptor report — including if the honest answer is that no theory was used and the change quietly reverted. That is a more useful finding than a tidy success, it is extremely common, and saying so plainly reads as observation rather than as criticism of your preceptor.