Design psychology has been employed as theory and practice by practitioners to support how humans experience different forms of design. For more than a century, the psychosocial implications of design and architecture have been explored through various disciplinary lenses such as geography, architecture and environmental psychology. Still, psychology and design are yet to deliberately collaborate for the creation of a new domain. The lack of a common language and shared methodological tools has led to impromptu implementations of design psychology by psychologists and designers in their efforts to humanise design. This approach has resulted in reinforcing behaviors aligned with the current socioeconomic paradigm, without questioning the latter’s impact on socioenvironmental injustices and climatic emergencies. As an alternative, intentional design psychology could instigate a new field of knowledge, grounded in critical, rethought and in time and place approaches, including excluded subjectivities, diverse ways of thinking and indigenous practices.