A greater need for user-centered care and an evidence-based clinical practice are factors that emphasize critical thinking as a professional competence. Furthermore, critical thinking is an essential competence that allows clinical reasoning, problem solving and decision-making in the critical clinical practice of all specializations in Physiotherapy. However, no instrument has been found that specifically assesses the critical thinking of physiotherapists in their clinical practice.

Multicenter, descriptive, cross-sectional and correlational study in two phases. Phase 1: adaptation of the N-CT-4P to the population of physiotherapists; Phase 2: analysis of the psychometric properties of the new instrument and levels of critical thinking through a cross-sectional study. Sociodemographic and professional variables and variables referring to the measurement of critical thinking (total score of the questionnaire and of each of its dimensions) will be collected. Its psychometric properties, internal consistency, repeatability analysis, discriminant validity and construct validity will be analyzed through confirmatory factor analysis and a multiple regression analysis will be performed.

Inclusion Criteria:

• Be a Graduate, Diploma or Bachelor of Physiotherapy
• Have an employment contract, as a care physiotherapist at the time of answering the questionnaire.

Exclusion Criteria:

• Have a contractual continuity of less than 15 days.

Health centers