Which ability would be most impaired with damage to the vestibular senses?

Which of the following statements regarding Horn and Cattell's theory of crystallized and fluid intelligence is FALSE?

A) Fluid intelligence peaks at approximately age 18. B) Crystallized intelligence consists of vocabulary and number abilities. C) Crystallized intelligence increases throughout adulthood. D) Fluid intelligence consists of mechanical skills.

Although panic attacks seem to come out of nowhere, they usually occur in the aftermath of stress, prolonged emotion, exercise, specific worries, or frightening experiences. Delayed attacks after life-threatening scares are common

What is the essential difference between people who have panic attacks and develop panic disorder and those that do not? What will be an ideal response?