It should take into account the psychopatologic context and the child's development moment to evaluate the baby alarm distress from a standardized instrument. We present the BADS questionnaire validation by its application in 90 children, from 0 to 2 years-old, obtaining a K=0.783 to p<0.01, with a Spearman coefficient of 0.866 and factorial analysis to 4 factors to 63.5% of the population studied. With these psychometrical qualities, the scale shows its importance as a screening but is important its study in others populations.