Neural circuits for behavior transform sensory inputs into motor outputs in patterns with strategic value. Determining how neurons along a sensorimotor circuit contribute to this transformation is central to understanding behavior. To do this, a quantitative framework to describe behavioral...

Neural circuits for behavior transform sensory inputs into motor outputs in patterns with strategic value. Determining how neurons along a sensorimotor circuit contribute to this transformation is central to understanding behavior. To do this, a quantitative framework to describe behavioral...

Complex animal behaviors are built from dynamical relationships between sensory inputs, neuronal activity, and motor outputs in patterns with strategic value. Connecting these patterns illuminates how nervous systems compute behavior. Here, we study Drosophila larva navigation up temperature...

With 302 neurons in the adult Caenorhabditis elegans nervous system, it should be possible to build models of complex behaviors spanning sensory input to motor output. The logic of the motor circuit is an essential component of such models. Advances in physiological, anatomical, and neurogenetic...

 I propose a mechanism for partisan sorting and geographic polarization which is tested using the mass migration of African-Americans from New Orleans to Houston, Texas in the aftermath of Hurricane Katrina. According to the Migration-Polarization (MP) Theory, diversity-increasing migration...

Low income high school graduates are less likely to enroll in four-year colleges than their more advantaged peers. When they do enroll, they are more likely to choose colleges with low graduation rates and higher costs, increasing their risk of leaving college without a degree and with...

We present a model of stereotypes in which a decision maker assessing a group recalls only that group?s most representative or distinctive types. Stereotypes highlight differences between groups, and are especially inaccurate (consisting of unlikely, extreme types) when groups are similar....

"Robust standard errors" are used in a vast array of scholarship to correct standard errors for model misspecification. However, when misspecification is bad enough to make classical and robust standard errors diverge, assuming that it is nevertheless not so bad as to bias everything else...

We establish five facts about the informal economy in developing countries.  First, it is huge, reaching about half of the total in the poorest countries.   Second, it has extremely low productivity compared to the formal economy: informal firms are typically small, inefficient, and run by...

Most policy changes generate winners and losers. Political economy and optimal policy suggest questions such as: Who wins, who loses? How much? Given a choice of welfare weights, what is the impact of the policy change on social welfare? This paper proposes a framework to empirically answer such...