Qualitative Differences in Adults’ Thinking QUALITATIVE DIFFERENCES IN ADULTS’ THINKING Jean Piaget, a Swiss psychologist who developed a theory of cognitive development has had a huge impact on cognitive development studies. Piaget suggested that children go through four separate stages of cognitive development in a fixed order that is universal in all children (Kodat, 2001). Piaget declared that these stages differ not only in the quantity of information acquired at each, but also in the quality …showed first 75 words of 1493 total…

…showed last 75 words of 1493 total…drink until he was drunk. He must have wanted her to make him leave. Maybe John doesn’t respect or take Mary seriously. Is Mary an enabler? There must have been long history of his alcoholism. Maybe she was going to a twelve-step program and she knew she would have to make him leave. I don’t think Mary was being unreasonable. I think she finally got smart and knew what she had to do.