When we use the word "theory" in everyday life ... well-supported scientific explanation for the relatedness of all life.

What do phylogenetic trees illustrate? These diagrams don't just organize knowledge of biodiversity - they also show us that living species are the summation of their evolutionary history.

According to this theory, we all need three things to feel good: Autonomy: Feeling in control of our own lives. Competence: Feeling capable in what we do. Relatedness: Feeling close and connected ...

The three central elements of self-determination theory—autonomy, competence and relatedness were found to be related to returning to sport following injury. Positive psychological responses including ...