This article examines the reliability of the instruments by using Partial Least Squares PLS and determined the convergent validity and discriminant validity of the latent variable under study. Specifically, the suggestion for applying PLS-SEM in media and communication studies have followed to prove the potentials of PLS-SEM using 228 datasets. Hence, the current study involves 7-constructs, 51-item which were adopted and adapted from various scholars to measure the complete process of political socialization of youth. The results of the measurement model show that the out of 51 items 42 items are with loadings greater than 0.50. In applying PLS-SEM, the measurement model gives assurance that indicators have a strong relationship with their corresponding latent constructs. Also, items show the convergent and discriminant validity of corresponding constructs. The implication of the measurement model results proved that PLS will assist communication and media studies that are designed as exploratory studied that will lead to theory building.