Final Answer:
The new person introduced to the students at the opening assembly is Mr. Ramirez, the school's new security guard. Keisha feels uncomfortable around him because he resembles a person she had seen in a recent news report about a local robbery.
Step-by-step explanation:
Keisha's discomfort with Mr. Ramirez stems from her association of his appearance with a recent news report about a local robbery. The human mind often connects faces or characteristics with past experiences, and in this case, Keisha subconsciously associates Mr. Ramirez's appearance with the person shown in the news report. This connection triggers discomfort and unease within her, even though Mr. Ramirez may have no connection whatsoever with the reported incident.
Moreover, the psychological phenomenon of 'facial recognition' and its impact on memory can play a significant role in Keisha's reaction. Studies show that our brains are wired to recognize and associate faces quickly, sometimes leading to false associations based on similarities. It's possible that Keisha, upon seeing Mr. Ramirez, unconsciously linked his facial features or certain physical traits to the individual she saw in the news, causing her discomfort.
Additionally, the news report might have created a strong emotional impression on Keisha, associating fear or unease with the individual involved in the robbery. Thus, when seeing someone who remotely resembles that individual, it triggers an emotional response within her, causing discomfort despite there being no factual basis for Mr. Ramirez's involvement in any criminal activity.
Understanding the complexities of human perception and memory association sheds light on Keisha's discomfort around Mr. Ramirez. It illustrates how our minds form connections and associations, sometimes leading to unwarranted discomfort or bias based on past experiences or media exposure.