Final answer:
It is true that certain people have both biological and psychological vulnerabilities toward developing anxiety disorders. Studies have shown that traits like neuroticism can increase the risk for such disorders and have significant health consequences. The Eysencks' theory supports the link between high neuroticism and anxiety.
Step-by-step explanation:
It is true that theorists now believe that certain people are born with a biological vulnerability to experience anxiety and also develop a psychological vulnerability toward anxiety disorders. Research on personality and illness, such as the studies by Friedman and Booth-Kewley and by Mykletun et al., suggest that personality traits like neuroticism, which encompasses characteristics like being anxious, moody, and sad, can be a risk factor for chronic health problems and mortality. The Eysencks' theory supports this by stating that those scoring high in neuroticism are more likely to be emotionally unstable and have an inclination towards feeling anxious.
Anxiety disorders are the most common mental disorders in the United States with significant population impact, indicating the relevance of this vulnerability. Persistent and repeated exposure to stress, which can be heightened in individuals with higher neuroticism, is associated with health consequences such as heart disease and impaired immune function. Thus, combining these psychological perspectives with known biological factors, such as in the biosocial model proposed by Zuckerman, paints a comprehensive picture of the multifaceted contributions to anxiety disorders.