PeerRev_Altruism scale: A psychometric study for junior high school student

The purpose of this study is to test the construct validity and reliability on the altruism scale and examine the aspects and indicators that can form this variable. Altruism is measured by three aspects, namely empathy, voluntary, and desire to help. The population in this study are all students of "X" Public Middle School in Semanu, consisting of 572 students, with a total sample of 142 students. The sampling technique in this study is a simple random sampling technique, while the data collection method used is the altruism scale. Research data were analyzed with Structural Equation Modeling (SEM) through the SmartPLS 3.2.8 program. Based on the results of data analysis, the aspects and indicators that made up the altruism variable were declared valid and reliable. The most dominant aspect that reflects altruism is empathy, with a loading factor of 0.823, and the weakest aspect that reflects the variable is the desire to help, with a loading factor of 0.780. This shows that all aspects and indicators are able to reflect and form altruism variables. Thus the measurement model can be accepted because the theory that describes altruism fit variables with empirical data obtained from the subject