"Children who helped and shared more quickly and more often, especially in tasks that required more complex emotion understanding, had parents who more often asked them to label and explain the emotions depicted in the books, " the researchers wrote.

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You know, car purchases are a complex gumbo of emotion and economics and ego and sex and all the rest, and it's just a question of, you know, how many parts of those various elements do you put into your decision-making hat to come up with the answer?

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But emotion is complex and challenging to capture through sounds and dialogue and gameplay.

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Dr Loucas Kartsounis, an expert in brain and behaviour from Old Church Hospital, Romford, Essex, UK, said emotion was a complex concept, which was difficult to study.

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What I was feeling was the same complex firing of neurons and synapses that ascribe human emotion to the furry, the liquid eyed, the infantile.

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