. Author manuscript; available in PMC: 2014 Jun 12.

Published in final edited form as: Nat Neurosci. 2013 Nov 22;16(12):1717–1724. doi: 10.1038/nn.3561

Table 1.

Properties of different decision problems

	Feeding	Breathing	Sex	Consumption goods (for example, clothing)	Drugs of abuse	Kin altruism
Necessary and frequent consumption	✓	✓	×	×	×	×
Regulated by multiple controllers	✓	Possible, but limited	✓	✓	✓	✓
Dedicated homeostatic mechanisms	✓	✓	?	×	×	×
Dedicated Pavlovian controllers	✓	✓	?	×	×	?
Dedicated learning systems	✓	?	?	×	×	?
Powerful activation of hedonic circuitry at consumption	✓	×	✓	×	✓	×