Extensive empirical research demonstrates that human executive control is multifaceted rather than unitary, consisting of separable and distinct cognitive and neural processes.
The claim posits that a single most comprehensive model accounts for all aspects of human executive control. However, multiple high-quality neuroimaging, developmental, and psychometric studies directly contradict this by showing that executive functions are nonunitary, comprising diverse and separable components such as updating, shifting, inhibition, and processing speed. Therefore, the claim is clearly refuted by the retrieved evidence.