A study published in the Journal of Happiness Studies found that parents and children often have different perceptions of the child’s happiest moments together. Parents tend to either overestimate or underestimate their children’s happiness levels, attributing it to positivity bias and egocentric bias. Positivity bias leads parents to overestimate their children’s happiness and underestimate negative emotions, while egocentric bias causes parents to judge their children’s happiness based on their own feelings during shared memories, resulting in inaccurate perceptions of the child’s experience.