Students will be given training on nasogastic tube insertion and practice will be demonstrated in the laboratory based on the demonstration method and checklists, and will continue until students learn. Forms will be applied to students as a pre-test. A pilot scenario will be applied to two volunteer fourth year students.

Prebriefing: Students will be informed. Students will implement the scenario in the simulation laboratory and will wear uniforms. The student will be given 5 minutes for preparation, the application will be taken one by one and 15 minutes will be given for practice. Researchers will only observe during this time. During the application, the student will be scored according to the checklist. Students will be recorded with video.

Debriefing: Immediately after the end of the scenario, a debriefing session will be held with groups of 5 people. Feedback will be given on students' performance. Each session will last 20-30 minutes. Students will be given a post-test.

Students will be given training on nasogastric tube insertion and nasogastric tube application will be demonstrated with the demonstration method in the laboratory and will continue until students learn. Forms will be applied to students as a pre-test. A pilot scenario will be applied to two volunteer fourth year students.

Prebriefing: Students will be informed. Students will apply the scenario on the model in the skill laboratory and will wear uniforms. The student will be given 5 minutes for preparation. Students will be taken to the application one by one and 15 minutes of practice time will be given. During the application, the student will be scored according to the checklist. Students will be recorded with video.

Debriefing: Immediately after the end of the scenario, a debriefing session will be held with groups of 5 people. Feedback will be given on students' performance in the debriefing session. Each session will last 20-30 minutes. Students will be given a post-test.

Students will be given training on nasogastic tube insertion and practice will be demonstrated in the laboratory based on the demonstration method and checklists, and will continue until students learn. Forms will be applied to students as a pre-test. A pilot scenario will be applied to two volunteer fourth year students.

Prebriefing: Students will be informed. Students will implement the scenario in the simulation laboratory and will wear uniforms. The student will be given 5 minutes for preparation, the application will be taken one by one and 15 minutes will be given for practice. Researchers will only observe during this time. During the application, the student will be scored according to the checklist. Students will be recorded with video.

Debriefing: Immediately after the end of the scenario, a debriefing session will be held with groups of 5 people. Feedback will be given on students' performance. Each session will last 20-30 minutes. Students will be given a post-test.

The scale was developed by Sherer et al. (1982). The scale, which does not belong to any subjective domain, measures the general perception of self-efficacy - efficacy. The scale consists of 23 items and four subscales. The subscales of the scale are respectively; These are "beginning the behavior", "maintaining the behavior", "Completing the behavior" and "Combating the obstacles". For each item; It is a five-point Likert-type scale as 1 = does not describe me at all, 2 = describes me a little, 3 = is undecided, 4 = describes me well, 5 = describes me very well. A score between 23 and 115 can be obtained from the scale. A high total score from the scale indicates that the individual's self-efficacy-efficacy perception is at a good level. The validity and reliability of the Turkish version of the scale was performed by Gözüm and Aksayan (1999).

The scale was developed by Jeffries and Rizzolo (2006) as 13 items to measure students' simulation activity and self-confidence in learning. Answering the scale for each item; 1=Strongly Disagree, 2=Disagree, 3=Undecided, 4=Agree, 5=Strongly Agree (Franklin et al., 2014). The Turkish validity and reliability study of the scale was carried out by Unver et al. (2017) and the total number of items decreased to 12.

The Nursing Clinical Decision Making Scale was developed by Jenkins (1983) for nursing students. This scale defines how nursing students perceive clinical decision making based on their own statements. The scale consists of 40 items and four subscales. The subscales of the scale are respectively; These are "Exploring options and ideas", "Exploring goals and values", "Evaluating results", and "Searching for information and adopting new information objectively". Each subscale consists of 10 items. Each item of the scale is evaluated as 5=Always, 4=Often, 3=Sometimes, 2=Rarely, 1=Never. A high score from the scale indicates a high perception of decision making (Jenkins, 1983; Jenkins, 2001). The Turkish validity and reliability of the scale was done by Durmaz Edeer and Sarıkaya (2015).

The scale was developed by Sherer et al. (1982). The scale, which does not belong to any subjective domain, measures the general perception of self-efficacy - efficacy. The scale consists of 23 items and four subscales. The subscales of the scale are respectively; These are "beginning the behavior", "maintaining the behavior", "Completing the behavior" and "Combating the obstacles". For each item; It is a five-point Likert-type scale as 1 = does not describe me at all, 2 = describes me a little, 3 = is undecided, 4 = describes me well, 5 = describes me very well. A score between 23 and 115 can be obtained from the scale. A high total score from the scale indicates that the individual's self-efficacy-efficacy perception is at a good level. The validity and reliability of the Turkish version of the scale was performed by Gözüm and Aksayan (1999).