This study examines the complex relationship between psychology and communication using a quantitative approach. Data was collected from 535 participants, including psycholinguists, linguists, psychologists, and researchers, through online questionnaires via Google Forms. Employing purposive sampling, participants with relevant expertise were targeted. SPSS was used for data analysis, and Structural Equation Modelling (SEM) tested the validity of hypotheses. The study identifies several key correlations: higher emotional intelligence is linked to more effective communication skills; self-efficacy correlates positively with assertive communication behaviors; communication apprehension negatively affects interpersonal communication quality; higher empathy leads to more empathetic interactions; and social influence significantly impacts group communication dynamics and decision-making. These findings offer valuable insights into the interplay between psychological factors and communication processes, highlighting their importance in improving interpersonal interactions. The study contributes to the understanding of how psychological factors shape communication behaviors, providing practical implications for enhancing communication in various contexts.