Subiektywność inteligencji – jacy jesteśmy, a jacy myślimy, że jesteśmy | prof. Marcin Zajenkowski

Professor Marcin Zajenkowski discusses his research into individual differences, noting how various psychological fields often overlook this aspect. He shares his experience receiving the Ignobel Prize for research showing that praising someone's intelligence can temporarily boost narcissism, highlighting the prize's motto: 'research that first makes you laugh, then makes you think'.

Zajenkowski explains the two main sources of individual differences: genetics and environment. He differentiates between temperament, which is biologically determined and stable from childhood, and personality, a broader category built upon temperament that includes learned traits like punctuality or narcissism.

Narcissism is presented as a trait everyone possesses to varying degrees, following a normal distribution. Zajenkowski explores the implications of both high and low levels of narcissism, suggesting that a moderate, positive self-perception is vital for psychological well-being. He distinguishes between grandiose narcissism, which is outwardly confident but can cause distress to others, and vulnerable narcissism, which involves internal struggles like anxiety and depression.

The discussion returns to the Ignobel-winning study, where participants were given false feedback on their intelligence. Those told they were 'above average' experienced a temporary increase in narcissism, demonstrating how external validation can influence self-perception. Zajenkowski emphasizes the societal overvaluation of intelligence and the potential negative consequences of false praise.

The conversation shifts to the complexities of psychological measurement, particularly with self-reported questionnaires. While acknowledging the potential for manipulation or social desirability bias, Zajenkowski explains how psychologists strive for reliability and validity in their tests. He shares an anecdote about a study linking self-reported narcissism to objective testosterone levels, validating the approach.

Zajenkowski clarifies that narcissistic personality disorder is diagnosed when traits cause significant suffering or dysfunction, often appearing during vulnerable states. He reveals that narcissism is not correlated with objective intelligence, though individuals with high narcissism tend to remember only positive, 'agentic' feedback, discarding criticism.

The discussion tackles intelligence, from the concept of a general intelligence factor (G) to multiple intelligences. Zajenkowski notes that fluid intelligence peaks around 20-30 years of age, while crystallized intelligence (knowledge from experience) continues to grow. He shares recent research indicating that a broader measure of psychological maturity, combining intellect and personality, peaks between 55-60 years of age.

The conversation addresses the challenges psychology faces with language and public perception, often leading to oversimplification or misunderstanding of complex concepts like emotional intelligence. Zajenkowski stresses the rigorous statistical methods used to ensure the reliability and validity of psychological tests, distinguishing scientific research from popular 'psycho-quizzes'.

Zajenkowski explains the 'Big Five' personality traits (neuroticism, extraversion, openness, agreeableness, conscientiousness) as fundamental dimensions for describing human personality. He discusses ongoing research into higher-order 'meta-traits' like plasticity and stability, and the idea that while core traits remain relatively stable, individuals experience a wide spectrum of states daily, allowing for personal growth and adaptation through conscious effort and habit change.

Professor Zajenkowski outlines his current research projects, including studies on narcissism in children, hormonal influences on narcissism in women, and the link between religiosity and narcissism. He reiterates the importance of constructive praise for children, focusing on effort rather than comparison. The host, Karolina Głowacka, encourages listeners to reflect on their self-perception of intelligence.