Article: " People also use the word "affect" when someone acts in a way that's different from how s/he normally acts. If someone assumes a new personality or look, s/he is "affecting" his or her new traits. Below are a few examples of the word "affect" being used in this way:  Richard affected an attitude of indifference, though he was deeply hurt by the comments. In her role as Lady Macbeth, Sally, normally jovial, was able to affect a cold sneer of cruelty. " Finally, the word "affect" is sometimes used to describe the way someone seems or acts - often in a psychological sense. Someone's "affect" can be thought of roughly as the way s/he externally "seems." Below are a few examples of the word "affect" being used in this way:  The gambler's flat, emotionless affect served him well at the poker table. Dr. Robertson noted that the patient's affect had responded well to the regimen of anti-psychotics.
What is a summary of what this article is about?
Use "affect" as a verb meaning "to pretend" or "to put on airs. Use "affect" as a noun meaning "mood" or "mental state.