Joshua greene presented people with the "trolley dilemma" and asked them to make a moral decision (e. g., is it appropriate to let one person die in order to save five he found that:

The responses were based on the respondent's emotions.

Explanation:

Psychology usually involves the study of human behaviour looking deep down to see the factors that influence their decision or behaviour.

On such factor that affect people's decisions is human emotions.

From his observations he discovered that impersonal decisions utilises brain regions that supports controlled reasoning.

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