VALIDITY OF THE STUDENT STRESS INVENTORY (SSI) FOR MEASURING STRESS LEVELS AMONG SECONDARY SCHOOL STUDENTS

This article discusses the item validity in a questionnaire used to measure the stress level of secondary school students. The instrument is adapted from the Student Stress Inventory (ISP) designed for university students by Mohammad Aziz Shah Mohamed Arip, Durrah Nadiah Kamaruzaman, Azila Roslan & Aslina Ahmad (2020). The ISP is based on a combination of two main theories, the General Adaptation Syndrome Theory and the Environmental Stress Theory. To obtain item validity for this instrument, the views of eight experts were examined. The validity of the instrument was measured using the Content Validity Index (CVI). The results of the expert validation showed that all experts agreed with the items provided. Meanwhile, with an S-CVI/Ave value of 0.963, the instrument shows a high level of validity. In conclusion, the items in this instrument are considered valid for measuring the stress level of secondary school students based on the high expert validity.