• Familiarization with immersive virtual reality simulation (1 hour)
• Video tutorial introducing paediatric ABCDE assessment, emergency teamwork and communication, and core elements in debriefing (1 hour)
• Three immersive virtual reality simulation-based pediatric emergency team training scenarios with facilitator-guided debriefing (2 hours)

The investigators will assess medical students' time to critical actions measured as time in seconds to administration of oxygen (pneumonia case) or beta2 agonist (asthma case), administration of a fluid bolus (10 mL/kg body weight), and completion of the ABCDE assessment. If the team does not perform the action, they will be assigned a time of 900 seconds.

Medical students will be video recorded before and after the intervention while managing a mannequin-based pediatric emergency in teams of two. Two independent raters blinded to group allocation will assess each team's time to predefined critical actions based on the videos.

This validated questionnaire is designed for learners to evaluate a debriefing on a 7-point Likert scale ranging from 1 = extremely ineffective to 7 = extremely effective. In consultation with the Debriefing Assessment for Simulation in Healthcare Student Version (DASH-SV©) developers, the investigators have replaced 'The facilitator' with 'We' in the self-guided debriefing group to fit the context. DASH-SV has been translated into Danish using a forward-backward translation process by two professional translators.

This validated questionnaire measures the subjective motivation related to a specific activity on a 7-point Likert scale ranging from 1 = not at all true to 7 = very true. Intrinsic Motivation Inventory (IMI) consists of 22 items across four domains: interest/enjoyment (seven items), perceived competence (five items), perceived choice (five items), and pressure/tension (five items). In this study, the investigatorswill use the seven-item Interest/Enjoyment domain, which is considered the direct measure of intrinsic motivation. IMI has previously been translated professionally to Danish and tested in a Danish context.

This validated questionnaire measures the subjective usability of a product on a 5-point Likert scale ranging from 1 = strongly disagree to 5 = strongly agree. The System Usability Scale (SUS) item scores are subsequently converted into a single SUS score on a scale from 0 to 100 (0 = lowest, 100 = highest). SUS has previously been translated professionally to Danish and validated in a Danish context.

This validated scale measures subjective workload related to a specific activity. The scale ranges from 0 to 21, and the item scores are subsequently converted into a single score from 0 to 100 (0 = lowest, 100 = highest). National Aeronautics and Space Administration Task Load Index (NASA-TLX) has been translated into Danish using a forward-backward translation process by two professional translators.

Virtual Reality Sickness Questionnaire(VRSQ) is a validated questionnaire designed to measure symptoms of cybersickness experienced during immersive virtual reality use. It evaluates nine symptoms on a Likert-type scale ranging from 0 = none to 3 = severe.