Explanation of a quote from the Marshmallow Experiment Article

Quote: "The scientists have decided to focus on genes in the dopamine pathways, since those neurotransmitters are believed to regulate both motivation & attention."

What I believe the quote means: The researchers in this experiment chose to focus on hereditary characteristics in the nervous system. The chemicals that are being passed from nerve to nerve are believed to regulate motivation and attention. Motivation and attention are important in the outcome of the experiment, because motivation is needed to wait and control of attention is needed to focus on something other than eating the marshmallow. The ability to motivate and control your attention is found by studying the nervous system. Not only was the experiment made to see motivation and attention skills, but to find where these two characteristics come from within the body.