Critical Thinking in Nursing
What critical thinking means in nursing — the five reasoning skills shown through real clinical scenarios, mapped to the nursing process (ADPIE) and clinical judgment, with study tips for nursing students.
In nursing, critical thinking is the disciplined reasoning behind safe, effective care: interpreting assessment data, recognising what matters, questioning assumptions, and deciding the best next step under uncertainty. It is the engine of the nursing process and underlies the clinical-judgment skills assessed by the Next Generation NCLEX. This page explains the core reasoning skills with nursing examples and maps them to the nursing process — as educational material for nursing students, not clinical guidance.
The five reasoning skills in a nursing context
The same skills measured by a general critical thinking test show up at the bedside:
Judging what a set of vital signs and observations most likely indicates — without over-reading a single data point.
Noticing when a care decision rests on an unstated assumption (e.g. that a symptom has the "obvious" cause) and checking it.
Following a protocol or guideline correctly to the conclusion it actually supports, no more and no less.
Deciding whether the available evidence genuinely warrants a conclusion, or whether more assessment is needed first.
Weighing competing explanations or recommendations and judging which is best supported by the evidence.
Critical thinking and the nursing process (ADPIE)
The nursing process gives that reasoning a structure. Each step is a thinking step, not just a task:
| Nursing process step | The thinking it requires |
|---|---|
| Assessment | Gather and recognise relevant cues; separate observation from inference. |
| Diagnosis | Analyse cues and form the most defensible hypothesis about the problem. |
| Planning | Prioritise; weigh options and expected outcomes against the evidence. |
| Implementation | Act on the reasoned plan while staying alert to new, disconfirming cues. |
| Evaluation | Judge whether the outcome matches the prediction and revise the reasoning if not. |
An example of critical thinking in nursing
A post-operative patient is slightly more confused than an hour ago, with a marginally lower blood pressure. A nurse using critical thinking does not treat each cue in isolation: they recognise the cues, consider what could connect them, gather further assessment data, weigh the possibilities, and escalate appropriately — then evaluate the result. That linking of evidence to a reasoned, reviewable next step is critical thinking in action. (Illustrative example for learning only — not a care protocol.)
Critical thinking vs. clinical judgment
Critical thinking is the general reasoning skill set; clinical judgment is that reasoning applied to patient care. The NCSBN Clinical Judgment Measurement Model describes how nurses recognise and analyse cues, prioritise hypotheses, take action, and evaluate outcomes — in effect, critical thinking carried through the nursing process.
How nursing students can develop critical thinking
- Practise connecting cues instead of memorising isolated facts.
- Ask "what else could explain this?" before settling on the obvious answer.
- Work through case studies using the nursing process deliberately, step by step.
- Seek feedback on your reasoning, not just your final answer.
- Benchmark your general reasoning with the free test, then strengthen your weakest skill with exercises.
This page is educational material about reasoning skills for nursing students. It is not medical advice, a care protocol, or a substitute for your program's curriculum, clinical instructors, or institutional policies. Sources: the nursing process (ADPIE); NCSBN Clinical Judgment Measurement Model (Next Generation NCLEX); American Nurses Association.
Frequently asked questions
Why is critical thinking important in nursing?
Nursing involves constant judgement under uncertainty — interpreting assessment data, recognising what matters, and deciding what to do next. Strong reasoning helps nurses notice subtle changes, question assumptions, and prioritise safely. It underpins the nursing process and the clinical-judgment skills assessed by the Next Generation NCLEX.
What is an example of critical thinking in nursing?
A nurse notices a post-operative patient is slightly more confused and has a marginally lower blood pressure than an hour ago. Rather than treating each in isolation, the nurse connects the cues, considers possible explanations, gathers more data, and escalates — that linking of evidence to a reasoned next step is critical thinking in action. (Educational illustration only, not clinical guidance.)
How is critical thinking different from clinical judgment?
Critical thinking is the general reasoning skill set; clinical judgment is that reasoning applied to patient care. The NCSBN Clinical Judgment Measurement Model describes how nurses recognise and analyse cues, prioritise hypotheses, take action, and evaluate outcomes — essentially critical thinking within the nursing process.
How can nursing students develop critical thinking?
Practise connecting cues rather than memorising facts, ask "what else could explain this?", use case studies and the nursing process deliberately, and seek feedback on your reasoning. Measuring your general reasoning with a test and targeting your weakest skill is a useful complement to clinical study.