Often, several factors contribute to the development of an eating disorder. In addition to her own desire for thinness, which of the following hypothetical outside influences would exacerbate Alexis's disordered eating habits?

Her ability to recognize that she is a unique individual that should not strive to look like others

Her desire to shut out pop culture and avoid television and print media

Her many subscriptions to fashion and mainstream magazines

According to the full diagnostic criteria listed by the DSM–IV–TR for eating disorders (not just the symptoms highlighted in the previous question), Alexis appears to meet the criteria for a diagnosis of .

Her many subscriptions to fashion and mainstream magazines

b. See Explanation

Explanation: The external influence here that would worsen Alexis' disordered eating is constantly seeing models in fashion and mainstream magazines. The modeling industry is notorious for forcing models to maintain a low, unhealthy weight. If Alexis accepts this as a normal weight for women, it could contribute to her eating disorder.

The full diagnostic criteria listed by the DSM–IV–TR for eating disorders is the list of criteria for diagnosing Binge eating disorder, Anorexia nervosa and Bulimia nervosa.

Binge eating disorder: eating more than is required to feel full within a 2 hour period, eating quickly than normal or when not hungry. Any of these may occur at least twice a week for 6 months .

Anorexia nervosa: an individual has less than 85% of the ideal Body Mass Index, a measure of the healthy body weight and has missed more than 2 menstrual periods.  

Bulimia nervosa involves inducing purging, vomiting or extreme exercise at least twice a week for at least 3 months .

I could not find Alexis' symptoms besides those listed in the question.

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