This study examined the factorial structure of the Parental Bonding Instrument (PBI) in the Greek population. Using confirmatory factor analysis different proposed models of the basic dimensions of PBI were evaluated. The results indicated that Kendler's three-factor (i.e. care, protectiveness and authoritarianism) solution was found to be more satisfactory than the other competing two-, three- and four-factor models. A second aim was the investigation of the factorial invariance of the PBI across different age groups (adults vs. children). The results revealed that PBI can be used in children samples (measurement invariance) but it seems that PBI latent variables may be perceived differently across different age groups (not structural invariance). The authors conclude that further research is needed in order to understand whether the differences are due to actual developmental changes in children's perceptions of the parent-child relationship or conceptual problems regarding the children's ability to conceive the PBI's theoretical constructs.