Research on the Relationship Between the Credibility of Consumer Online Reviews and Purchase Decisions Under International Law

With the continuous improvement of international law, cross-border e-commerce platforms have been continuously developing and improving, becoming one of the main ways of international trade and economy. Online reviews substantially influence purchase decisions, yet their reliability is often eroded by manipulation, bias, and fraud. Prevailing methods depend mainly on sentiment analysis of review text, neglecting behavioral cues, probabilistic signals, and cross-platform variability. This study proposes the review credibility–trust integrated model—a comprehensive framework that unifies multi-dimensional credibility scoring, consumer trust formation, perceived risk estimation, and contextual factors (e.g., seller reputation, product category). The review credibility–trust integrated model synthesizes textual, behavioral, and probabilistic evidence to quantify review credibility and leverages structural equation modelling to disentangle the relationships among credibility, trust, risk perception, and purchase intention.