This doctoral dissertation deals with the complex dynamics of family food purchases, exploring the interactive process between parents and children. While parents are traditionally responsible for food product purchases, children’s influence on family purchases is increasing and encompasses the entire decision-making process. Investigating the relationship between parents' and children's explicit and implicit food attitudes, it was found that parents significantly shape children's attitudes. This research sheds light on the key role of parents in shaping children as consumers in the specific domain of food products. Furthermore, it was established that parents' explicit attitudes, in contrast to implicit ones, have a positive effect on the purchase of healthy food, thus concluding that the purchase is an intentional decision-making process. Additionally, children's explicit and implicit attitudes were found to uniquely contribute to their food purchase requests. The multidimensional research approach, which includes explicit and implicit measures, provides valuable insights into understanding the complex dynamics surrounding family food choices. The doctoral dissertation offers a new perspective on the formation of children's food attitudes and the unique influence of explicit and implicit processes in predicting behavior in the context of food.