IQ or EQ Which is more important

PDF · 1 Jun 2026

The Fast Company article by emotional‑intelligence expert Harvey Deutschendorf examines the long‑standing debate over whether intellectual quotient (IQ) or emotional quotient (EQ) matters more for success at work. It traces the historical shift from viewing IQ as the primary predictor of achievement, through Howard Gardner’s multiple intelligences, to Daniel Goleman’s popularization of EQ. The piece defines IQ as reasoning and problem‑solving ability and EQ as the capacity to recognize, differentiate, and manage one’s own and others’ emotions. It argues that while IQ can open doors—granting education and entry‑level jobs—EQ drives advancement, promotion, and sales effectiveness, citing Goleman, Nobel‑prize‑winning psychologist Daniel Kahneman, and leadership coach Mike Goldman. A brief neuroscience explanation describes how emotional processing in the amygdala precedes rational processing in the neocortex, shaping first impressions. Deutschendorf highlights that IQ is largely set by late adolescence, whereas EQ remains highly malleable throughout life. He uses a race‑car analogy from his book The Other Kind of Smart: the engine and components represent IQ, while the driver represents EQ, emphasizing that a skilled driver can maximize the engine’s potential. The article concludes that both IQ and EQ are essential, but EQ’s flexibility makes it a critical lever for career growth, urging readers to develop their emotional intelligence to complement their cognitive abilities.

Topics

From IQ Dominance to Multiple Intelligences and EQ

Historical evolution of intelligence concepts, covering Howard Gardner’s multiple intelligences and Daniel Goleman’s rise of emotional intelligence.

Defining IQ and EQ: Cognitive vs Emotional Capabilities

Clear definitions of Intellectual Quotient (reasoning, problem‑solving) and Emotional Quotient (recognizing, managing emotions) and their roles in education and early career entry.

EQ as the Engine of Workplace Advancement

Arguments and expert quotes (Goleman, Kahneman, Mike Goldman) that EQ, not IQ, determines promotions, trust, and sales success after technical skills are accounted for.

Neuroscience of First Impressions: Amygdala vs Neocortex

Brief brain‑science explanation of how emotional processing precedes rational thought, shaping first impressions and influencing interpersonal outcomes.

The Race‑Car Analogy: IQ as Engine, EQ as Driver

Deutschendorf’s metaphor from *The Other Kind of Smart* illustrating how a powerful IQ (engine) needs a skilled EQ (driver) to achieve optimal performance, highlighting EQ’s malleability.

Integrating IQ and EQ for Career Success

Synthesis that both intelligences are necessary, but EQ’s developability makes it a strategic focus for ongoing professional growth.

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