Morales-Munoz I, et al. - Authors sought assess the effect of various psychiatric maternal risk factors during pregnancy (ie symptoms of anxiety, depression, insomnia, alcohol use, seasonality, attention deficit and hyperactivity disorder and/or stressful life events) on the onset of sleep problems associated with sleep quality and sleep practices in 3-month old infants. It was reasoned that attention deficit and hyperactivity disorder symptoms in mothers during pregnancy were the only psychiatric risk factors that predicted more than 2 sleeping difficulties at 3 months old. Furthermore, yielded data underscored that not only prenatal depression and/or anxiety, but maternal risk factors during pregnancy, were pertinent variables that needed to be taken into account while analyzing sleep difficulties in infants.