C=6Poland has as many as six distinct seasons. Apart from the four typical European seasons, there are also two periods described as early spring
<span>in medieval times, abnormal behaviors were viewed as a sign that a person was: possessed by demons
The people in medieval times haven't understood the concept of psychological disorders, so they perceive everyone who got it as being conquered/possessed by demons</span>
Erik Homberger Erikson (born Erik Salomonsen; 15 June 1902 – 12 May 1994) was a German-American developmental psychologist and psychoanalyst known for his theory on psychological development of human beings. He may be most famous for coining the phrase identity crisis.
<span>The concept of latent learning was developed by Tolman</span>
The answer is a Natural Experiment.
A natural experiment takes place in natural settings and are used when independent variables can't be manipulated directly for ethical/practical reasons, so in this case the toddlers playing. Any effect observed happens naturally. They aren't seen as true experiments as the independent variable (toddlers playing) hasn't been changed deliberately to see effect on dependent variable (aggressiveness).