This methodological article aims to elucidate the theoretical aspects of quantile regression, advocating for its broader recognition and utilization as a predictive tool. Despite its utility, quantile regression remains relatively obscure. To enhance comprehension and facilitate its application, we illustrate its implementation through an example in the domain of social and health psychology, specifically focusing on attitudes towards individuals living with HIV/AIDS. By providing a practical demonstration within this context, we aim to demystify quantile regression and highlight its relevance in various fields of research.