Children with SSD are more at risk of mental health problems and difficulties making relationships with those around them. They are also more likely to struggle with learning at school and be involved with the criminal justice system at some point in their early lives. When a baby is born parents make different choices about feeding their baby. Some breastfeed, some bottle-feed and some use a mixture of both. Some babies also like to have a dummy, while others suck their hand and some don't suck anything. Some studies have found that breastfeeding is linked to better language and learning in later childhood, while others have found that dummy sucking has the opposite effect.