Common Mistakes: Affect vs. Effect

Recently I wrote about the confusion surrounding the use of bad and badly, and I was a little surprised at the response I received on the Language Trainers Facebook page—that is to say, I was surprised there was any response at all. Usually when I explain grammar rules (I usually only do this when someone has asked me to proofread something, I promise I’m not a condescending jerk that goes around giving unsolicited grammar advice) the person I’m talking to usually gives me a just-correct-it-and-go-away look, but apparently there are people who are interested in this sort of thing, at least a little. That’s why I decided to give it another go and explain two other words that can be confusing to use: affect and effect.


The Short Version


To make things easier to understand, I’ll give the general rule before I start getting into all the confusing exceptions. The majority of the time, affect is used as a verb, and effect is used as a noun. Again, there are instances where this isn’t the case, but for the most part this rule is all you’ll need.

To help you remember the correct usages, try this trick I learned in high school and think about Edgar Allen Poe and his RAVEN:

Remember Affect Verb Effect Noun

With that out of the way, let’s get to the good stuff!


When to Use Affect


Like I mentioned earlier, affect is almost always used as a verb. In this usage, to affect something is to influence or produce a change in it.

Julie wondered how her sleeping habits were affecting her grades.

Affect can also mean to adopt a use, style, or manner of doing something.

She affected an air of sophistication.

The exception to using affect as a verb comes into play when you’re talking about psychology. In this context, affect can be used as a noun to indicate an observable expression of emotion. When used in this manner, there is generally more emphasis put on the first syllable of the word (AFF-ect).

She displayed a flat affect.

In case you were wondering, having a “flat affect” means showing little or no emotions. Unless you work in a field where you are analyzing people’s mental status, chances are you won’t be using affect in this was very often, so stick to the general rule and use affect as a verb.

 affect, effect

When to Use Effect


Effect, on the other hand, is mostly commonly used as a noun meaning the result or impact of something.

The effect of making the correct choice is a better grade.

It can also refer to belongings.

Take your personal effects with you when you leave.

Here comes the confusing exception to the rule: less commonly, effect can be used as a verb which means “to succeed in making or doing something.”

 They effected their escape through a rear window.


I hope to effect a change with my petition.


Did that clear things up a bit? I really hope so. I know it can be confusing, but about 80% of the time all you’ll need to remember is RAVEN.

How did this article affect you? Did it produce a positive effect where your written communications are concerned?