This study will be conducted as a single-blind randomized control group intervention trial to examine the effect of using concept maps on the students' knowledge levels about toxic stress in newborns, which is explained to second-year nursing students.

The Newborn Toxic Stress Knowledge Test (1st Test) will be administered to intervention and control group students who agree to participate in the research, before the 4-hour High Risk Newborn theoretical lecture. Training on Toxic Stress in Newborns will be given to both groups, and then a post-training knowledge test (2nd Test) will be administered. The initiative group will be composed of students who apply concept maps and make in-class maintenance plans after theoretical training. The control group will consist of students who receive theoretical training and implement in-class care plans. After the concept map application, a knowledge test will be applied again (3rd Test).

The data of the research will be collected with the Personal Information Form and Newborn Toxic Stress Information Test.

The personal information form was prepared by the researchers. In shape; There are questions about the student's age, gender, secondary school graduation status, whether they choose the nursing profession willingly, whether they consider the nursing profession suitable for themselves, whether they have heard the term concept map and whether they have applied concept map.

Newborn Toxic Stress Information Test was prepared by researchers. The test consists of 25 multiple choice questions. It consists of true, false and I don't know options.

Inclusion Criteria:

• Enrolled in the course
• Had not taken this course before
• Accepted to participate in the research

Exclusion Criteria:

• Have any records of absence
• Taken this course before
• Graduate of health vocational high school