India, April 22 -- Who decides whether our actions or decisions are morally acceptable or objectionable? A new study reveals that it is the brain activity which is responsible for the differences in our moral behaviour.

The study showed that when it comes to moral behaviour, people may not always stick to the "golden rule." While some people would have genuine concern for others, some others might not and rather demonstrate, what is called in psychological terminology, 'moral opportunism.' Here, humans want to appear morally justified but are also seeking to maximise their own benefits.

For the study, which was published in Nature Communications journal by the lead author Jeroen Van Baar, a postdoctoral research associate at Brown Unive...