Studies have also found that higher IQ is associated with more mental illness, including depression, anxiety, and bipolar disorder.
Recent research has found that those with higher intelligence may be more likely to experience worry, anxiety, and other mood disorders.
In GAD patients, high IQ was associated with a greater degree of worry (r = 0.46; p = 0.016). In healthy volunteers, high IQ was associated with a relatively lower degree of worry (r = −0.60; p = 0.009). The correlation between IQ and worry was significant in both the GAD group and the healthy control group.
Signs of Genius in Adults. The signs of high intellectual power in adults are similar to those in children. They include quick learning, interest in unique topics, and the ability to process information fast, among others.
Signs of intelligence include better rhythm, liking dark humour, being prone to worry, sleeping late, high self-control and new ideas. Signs of intelligence are many and varied and go way beyond a standard IQ test.
Studies have also found that higher IQ is associated with more mental illness, including depression, anxiety, and bipolar disorder.
Those with high IQ had higher risk for psychological disorders (RR 1.20 - 223.08). High IQ was associated with higher risk for physiological diseases (RR 1.84 - 4.33). Findings lend substantial support to a hyper brain/hyper body theory.
Some psychologists believe that the ability to listen to another person, to empathize with, and to understand their point of view is one of the highest forms of intelligent behavior.
Recap: 4 Reasons highly intelligent people fail
They are born into bad circumstances, poverty, a toxic family, a lack of resources and opportunities. They suffer from mental illness, which creates myriad other barriers to career advancement and better paychecks. They lack people skills or are arrogant.
For example, raw speed in processing information appears to peak around age 18 or 19, then immediately starts to decline. Meanwhile, short-term memory continues to improve until around age 25, when it levels off and then begins to drop around age 35.
Spatial intelligence or picture smart is a quality that is perhaps the rarest of all the nine Howard Gardner categorized.