Involvement of frontal lobe in intelligence can be understood in terms of which of the following sequence:

Correct option is B

The prefrontal cortex (PFC) plays a central role in intelligence through a sequential processing pathway. The frontal lobe first engages in focusing attention internally, directing cognitive resources toward relevant mental representations. This internal attentional focus enables response selection, the executive function of choosing appropriate actions from competing alternatives while inhibiting irrelevant responses. These processes feed into working memory, maintaining and manipulating information for ongoing cognitive tasks. Finally, this integrated system supports general reasoning (fluid intelligence), enabling abstract thinking, problem-solving, and adaptation to novel situations, consistent with Duncan's (2000) research on frontal involvement in g-factor.

Information Booster:
● Duncan's (2000) research identified the lateral prefrontal cortex as critically involved in general intelligence (g) and fluid reasoning tasks.
● Internal attention (endogenous) involves self-directed cognitive control, distinct from stimulus-driven external attention, mediated by dorsolateral PFC.
● Response selection reflects executive functions including inhibitory control, decision-making, and conflict resolution between competing action plans.
● Working memory (Baddeley & Hitch model) includes central executive functions primarily localized in prefrontal regions for cognitive control.
● Fluid intelligence (Gf), measured by tests like Raven's matrices, heavily relies on prefrontal cortex integrity and working memory capacity.
● Frontal lobe damage typically impairs planning, abstract reasoning, and cognitive flexibility while preserving crystallized knowledge.