The reason why contemporary, mainstream psychologists reconsider the possibility that extrasensory perception, or esp, exists is: <span>The topic has been addressed by a credible and prestigious psychological journal.
The theory based on the scientific findings that found that Most human only used 10% of our brains. We still don't know our brain full capabilities when we're using it 100%</span>
        
             
        
        
        
I think, it helps their imagination and them grow
        
                    
             
        
        
        
Nationalism in Europe rose during the 1800s as a result of political turmoil. The French and American revolutions played a major role in giving the existing European populations the courage to unite in order to overthrow the existing governing structures and develop new governmental structures based on liberty and national identity. The core essence of Nationalism is that of national identity. People of a similar culture or race or religion group together to form a cohesive unit based on their similarities. 
        
             
        
        
        
Answer:
<em>scientific method        </em>               
Explanation:
<em>The scientific method </em><em>is referred to as a phenomenon that involves a standardized process to make observations, test predictions, interpret results, form theories, and gather data. Psychologists generally use the scientific method for experimenting or researching. Generally, experimenter or the researcher tries to make observations to measure and describe specific behavior.</em>
<em>It helps the researcher to replicate psychological data and because of this the researcher via replication of different experiments make new generalizations and helps other psychologists to make less error.</em>
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A would be your answer.
Hope you have a great day.
PLz can I have Brainlest.