This study, authored by Iakovos Koukas (August 2025), introduces a comprehensive Neuroscientific Model of Intelligence that integrates psychometric, cognitive, and neuroscientific perspectives. Moving beyond traditional IQ-focused frameworks, the model organizes intelligence into four interdependent domains: Analytical-Logical, Sensory-Motor, Social-Emotional, and Higher-Order Creative. Each domain is grounded in distinct neural systems, linked to established psychometric constructs, and demonstrated through real-world applications. By bridging theories such as Spearman’s g-factor, the Cattell–Horn–Carroll model, and the Parieto-Frontal Integration Theory with modern neuroimaging evidence, the study highlights intelligence as a multidimensional, adaptive system rather than a single measurable trait. The framework emphasizes the interplay of reasoning, perception, emotion, and creativity, offering transformative implications for neuropsychological assessment, education, talent development, and leadership training. Ultimately, the model redefines intelligence as a holistic capacity for survival, growth, and human flourishing, calling for an inclusive paradigm that recognizes diverse forms of human potential.