The present article investigates semantic change in psychology-related concepts, in scientific and social media texts comparatively. We assess patterns of change over 15 years (2010-2025) and compare word usage in a corpus of Psychology journals abstracts and Reddit comments, testing whether specialized communities on social media align with psychology experts. We analyze semantic breadth, semantic displacement and neighbours similarity evolutions, and in addition include in our experiments contextual embeddings alongside static Word2Vec embeddings. Our results reveal diverse patterns of semantic change across the examined concepts and confirm that many terms are used differently on social media compared to specialized literature. Furthermore, Reddit communities focused on psychology discussions occupy an intermediate position, adopting a more objective stance than general-domain threads while remaining distinct from specialized literature.