My instinct is that these articles are both right. Yes, your emotions and impulses are more difficult to control when you're tired and hungry (WSJ article) and

My instinct is that these articles are both right. Yes, your emotions and impulses are more difficult to control when you're tired and hungry (WSJ article) and yes, with effort you can still control them (stanford article). Much of psychology is "shaky" science - the underlying subject is just so damn complex.