The Stanford Marshmallow Experiments are a favourite illustration of motivational speakers. The lesson is this: If you can learn how to delay gratification early in life, you’ll do better in later life. Sounds reasonable, doesn’t it? But unfortunately, like many popular conclusions drawn from famous psychological experiments, it doesn’t stand up to closer scrutiny. The more up-to-date study demonstrates something far more mundane: if you grow up in a secure home where you know there will always be food on the table, you’re more likely to be able to put off eating a marshmallow. This isn’t a particularly useful lesson for motivational speakers. But it’s a great illustration of what it means to be a child of God.