Sierra constantly criticizes her appearance and her abilities and downplays her many accomplishments. these negative, self-defeating thoughts have led to her long-standing depression, according to the theory.

cognitive

Explanation:

According to cognitive theory the mental processes that occur in the mind shapes the behavior of an organism. The behavior is not seen as the complete result as a reaction to the stimulus but the intermediate mental processes plays a part in the behavior.

Sierra, is not satisfied with her self image and downplays her achievements which leads her to be depressed. Her mental state is not caused as a reaction to a stimulus. So, this perspective is in line with the cognitive theory.

answer; language that can promote racial stereotypes;

answer; /// decreasing responsiveness to a stimulus to which one is repeatedly exposed;