1. Affect or Effect ฝ่ายวิชาการคณะฯ
Affect is almost always used as a verb.
Effect is almost always used as a noun.
Use effect when talking about a result.
Example: What effect did the loss have on the team?
..when one of these words is used: into, no, take, the, any, an, or and.
Example: The prescribed medication had no effect on the patient's symptoms.
Example: In analyzing a situation, it is important to take the concepts of cause and effect into consideration.
…when describing something that was caused or brought about (use as a verb; rarely).
Example: The new manager effected some positive changes in the office.
Use affect when trying to describe influencing someone or something rather than causing it.
Example: How does the crime rate affect hiring levels by local police forces?
Example: The weather conditions will affect the number of people who come to the county fair this year.
Affect can be used as a noun (rarely) to describe facial expression.
Example: The young man with schizophrenia had a flat affect.
Example: The woman took the news of her husband's sudden death with little affect.