They do not tend to think rationally about situations, which may result to them feeling bad for themselves in the end.

The feeling of being much abused was too strong to let her think rationally.

He finally got control of his anger and started to think rationally once again.

It didn't seem that he could think rationally for himself anymore.

Do all men lose their ability to think rationally when they hear the word 'fish'?

If we all thought about having children rationally, many would decide not to have them.

Faced by this crisis now he found himself well able to think rationally.

Taking a deep breath, he forced himself to think rationally.

You know I can't think rationally about anything else right now.

It's difficult to think rationally when everyone is so emotional about the subject.