The prenatal wellbeing of first-time mothers has a direct effect on the behavior of children at 24 months. Mothers who experienced stress and anxiety while pregnant were more likely to have children who displayed behavioral problems, such as temper tantrums, spitefulness and restlessness. The children also exhibited emotional problems, including being clingy, tearfulness and unhappiness. Emotional problems were exacerbated if their parents experienced relationship problems during early pregnancy.