Urban Density and Park Recreation Motivation: Exploratory Hypothesis Generation Based on High-Density Evidence and Cross-Context Comparison

High-density urban parks are essential spaces for residents in core urban areas for restorative experiences and routine leisure. Research on the impact of cross-density contexts on the motivational structure of park recreation remains limited. Empirical identification under a high-density Built Environment remains limited, and cross-density comparison is largely absent. This study examines five high-density parks using 583 valid questionnaires and the Recreation Experience Preference (REP) scale with exploratory factor analysis (EFA) to identify the motivational structure and motivational expression strength of park recreation. Standardized density assessment and cross-density comparison in existing studies generate exploratory hypotheses. Results identify eight motivational dimensions, explaining 62.36% of the variance. Physical well-being, nature enjoyment, relaxation and family bonding, and social connection are consistently recognized across density contexts, while escape, introspection and self-realization, learning and exploration, and autonomy and independence are more likely to emerge as independent dimensions in high-density contexts. Physical well-being and social connection appear at higher proportions in low-density contexts. This study provides direct empirical evidence on the motivational structure of urban park recreation in high-density Built Environments, exploratory evidence for understanding the potential associations between urban spatial contexts and psychological needs, and a foundation for future research in human-centered urban landscape planning and management.