Equivalent of Ctrl-W for IntelliJ Mac

Question

The cheatsheet says that for expanding selection I should use Ctrl-Up, but it doesn\'t work for me on the latest intelliJ, with Mac OS X 10.7.4

What is the

Answer 1

Select word: option+Up arrow

(IntelliJ IDEA 2016.2.3 on macOS Sierra 10.12)