it’s always good to have more data! And yes, it is possible that if we had more data, we would find some small negative effects. The studies we have are not perfect. However, the idea that this uncertainty should lead us to avoid sleep training is flawed. Among other things, you could easily argue the opposite: maybe sleep training is very good for some kids—they really need the uninterrupted sleep—and there is a risk of damaging your child by not sleep training. There isn’t anything in the data that shows this, but there is similarly nothing to show that sleep training is bad. You could also
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