diff --git a/README.md b/README.md
index 17ecdab..3638a28 100755
--- a/README.md
+++ b/README.md
@@ -110,6 +110,7 @@ This file contains a number of front-end interview questions that can be used wh
 * What's the difference between a variable that is: `null`, `undefined` or undeclared?
   * How would you go about checking for any of these states?
 * What is a closure, and how/why would you use one?
+* Can you describe the main difference between a `forEach` loop and a `.map()` loop and why you would pick one versus the other?
 * What's a typical use case for anonymous functions?
 * How do you organize your code? (module pattern, classical inheritance?)
 * What's the difference between host objects and native objects?