Dual-user crib design based on the SAPAD model

To meet the needs of mothers and babies for using baby cribs, this study established a product design process integrating SAPAD theory and the Analytic Hierarchy Process (AHP) from the perspective of maternal-infant lifestyles. Information on mother-baby lifestyles obtained from user studies was analyzed through the SAPAD framework to examine the deep meanings of parenting behaviors and key crib-usage behaviors across different contexts. Cluster analysis and AHP were combined to first generate symmetric clustering matrices identifying meaning clusters, then conduct weight analysis with consistency testing to extract users’ core design needs. A core meaning model was constructed to identify corresponding key behaviors and correlates, ultimately yielding five major design modules that translate user requirements into crib design concepts. Design analysis and practice implemented these guidelines, with fuzzy AHP verification confirming the method’s effectiveness in guiding crib design. This approach provides an efficient user-centered model for functional modularization in baby cribs and other multi-user products, effectively resolving demand transformation and functional division challenges in multi-user product design.