“…1,7,11,21 Despite their lack of statistical signifi cance, the variables "low level of education" and "presence of father and mother mental disorder" show prevalence ratios that must be taken into consideration, once they are factors usually regarded as associated with parent-child relationship quality, revealing damage to the fatherinfant relationship. 19 The present study enabled the direct observation of family groups of all children born in a certain district at a particular time, as well as their interactions in their environment. Moreover, a research instrument scoring method with consensus of two observers was employed, thus minimizing possible measurement bias.…”