Final answer:
An anxiety disorder diagnosed during adolescence does not necessarily continue into adulthood due to the unique experiences and varying paths of the disorder for each individual.
Step-by-step explanation:
Based on the textbook's discussion, it is safe to say that an anxiety disorder diagnosed during adolescence will not necessarily continue into adulthood. The prevalence of anxiety disorders in the U.S. adults stands at about 18% annually, and 28% over a lifetime, according to data from the Anxiety and Depression Institute of America (2021). While these statistics show that anxiety disorders are common, each individual's experience with an anxiety disorder is unique, and the path of the disorder can vary widely from person to person. For some, an anxiety disorder that begins in adolescence may resolve by adulthood, while for others, it may persist.
Therefore, there is no absolute answer to this question, and it would be inaccurate to claim that an anxiety disorder will rarely or never continue into adulthood without considering the nuances of each case.