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The research was
long. The pigs spent many days playing the game. They played on three different
. If they were
at one level, they moved to the next level. The
levels had nicer treats. A scientist said: "The pigs clearly understood the
between their own behavior, the
, and what was happening on the screen." Dr Coney wants to understand how pigs get
, and what they can learn and remember. She said this would help
to understand
about pigs interacting with
.