Do babies suffer when mothers go back to work?

By assessing the total impact on a child of the mother going out to work, including factors outside the home, American academics claim to have produced the first full picture of the effect of maternal employment on child cognitive and social development. Their conclusion will provide comfort for thousands of women who re-enter the employment market within a year of giving birth.

The good news is that we can see no adverse effects. This research is unique because the question we have always asked in the past has been: 'If everything else remains constant, what is the effect of a mum going off to work?' But of course everything else doesn't stay constant, so it's an artificial way of looking at things.

Family relationships, family income, the mental health of the mother all change when a mother is working and so what the study did was to look at the full impact, taking all of these things into account.

In one of the most fraught areas of social policy and research, several studies over the past two decades have suggested that children do worse if their mothers go back to work in the first year of their lives.

Recent research by the Institute for Social and Economic Research at Essex University found that children of mothers who went back to work within the first three years were slower learners, and a 2008 Unicef study recommended that mothers stay at home for the first 12 months or "gamble" with their children's development. The Pew Research Centre in Washington found high levels of anxiety among women over the issue.

The new study, led by New York's Columbia University School of Social Work, The National Institute of Child Health and Human Development Study of Early Child Care followed more than 1,000 children from 10 geographic areas aged up to seven, tracking their development and family characteristics. It found that, while there are downsides to mothers taking work during their child's first year, there were also significant advantages – an increase in mothers' income and wellbeing, and a greater likelihood that children receive high-quality childcare. Taking everything into account, the researchers said, the net effect was neutral.

The effect of the parenting itself is the key factor, It is hugely important how sensitive you are to your child's needs. Even for women who have to work more than 30 hours a week, they can make things better for themselves, they just need to take a deep breath on the doorstep, dump all the office worries behind them and go in the door prepared to pay attention to all their children's cues. This is good news for all mothers.

This is especially good news for mothers, who typically go back to work after  one to 4 months because of the lack of maternity leave. Part-time work, up to 30 hours a week, provides more desirable outcomes than full-time employment.

Parents  welcomed the findings. Women should not feel guilty whatever choices they make – and that does not mean you have to make the choice to work. Often it is the more well-off women who have the choice, while many others have to work. There is a notion that mothers should spend all their time with their children but that is wrong. You need to also do things that are just for you.

 And a career can give you that.