Talk at Google

in

Mike Toomim and I gave a talk today at Google in Palo Alto on our joint project on using economics to understand users' choice of interfaces and to inform design decisions in human-computer interactions. The title of the talk was "HCI meets Economics" and the slides are available here. The abstract is below:

In 1983, Donald Norman presented the very first paper at the very first meeting of the Computer-Human Interaction (CHI) conference, and posed a still open problem: can we scientifically measure and optimize "user satisfaction"?  Specifically, can we predict which interfaces users will value and choose to use, before building and deploying a product? Twenty-eight years later, we have yet to find objective measures of an interface's "value" or "user satisfaction."

We present a new method to measure and quantify user choice based on Economics.  To understand user behavior we run economic experiments with thousands of humans on the web.  We pay users different amounts of money to use different interfaces that accomplish the same task, and determine the monetary amount that an interface variation is worth.  For instance, we find that aesthetic changes to an interface significantly changes the amount of money we have to pay.  Thus, our approach provides direct measures of user behavior and how much improvements in interfaces are worth to different types of users.  This will help designers understand the trade-offs inherent in interface design.

In addition, our methods allows for experiments that were previously not possible in both HCI and Economics.  In this talk we explain our method, initial experiments, planned extensions, and the implications for both HCI and Economics.

Labour/development brown bag

in , ,

I am presenting at the labour/development brown bag on Thursday 12 May at 12.30. The title of the talk is "Risk Perception, Health Knowledge, and Sexual Behavior." This is not a paper, but a research agenda with Mark Anderson. It follows partly from our recent paper on drop outs and STDs submitted to Demography. A short abstract for the talk is below.

We will discuss a new research agenda relating to adolescent sexual behavior in the US that we are beginning to work on. The talk will focus on the basics of trying to understand the formation of beliefs in the absence of (practical) experience and how expectations and beliefs change over time with experience and additional information.

CSAE and PAA conferences

in , , ,

Busy March: In addition to the PacDev mentioned below, I presented my work on family planning in Ethiopia at the 25th anniversary conference of the Centre for Studies of African Economies in Oxford and at the Population Association of America's annual meeting in Washington, DC. Mark Anderson and I also had a poster on our paper on the effects of dropping out of high school on sexually transmitted diseases.

Why is Dropping Out of High School Bad? Dropouts and Sexually Transmitted Infections

in , ,

Mark Anderson and I just finished a paper looking at one pathway through which dropping out of school might affect future life outcomes. The paper is "Why is Dropping Out of High School Bad? Dropouts and Sexually Transmitted Infections". The abstract for the paper is:

People who drop out of high school fare worse in many aspects of life. We analyze whether there is a causal effect of dropping out of high school on the probability of contracting a sexually transmitted infection (STI). Previous studies on the relationship between dropout status and sexual outcomes have not empirically addressed self-selection effects. Using individual fixed effects estimations we find strong evidence that dropping out increases the risk of contracting an STI for females. Furthermore, we present evidence illustrating differences between the romantic partners of dropouts versus enrolled students. These differences suggest that female dropouts may be more susceptible to contracting STIs because they partner with significantly different types of people than non-dropouts. These results point to a previously undocumented benefit of encouraging those at risk of dropping out to stay in school longer.

Live plenary sessions from the Centre for Studies of African Economies conference

in ,

I am heading to Oxford to participate in the CSAE conference. The plenary sessions will be aired live at http://www.csae.ox.ac.uk/conferences/2011-EdiA/video.html The program is: Sunday 20 March 2011 14: 30- 16:00 GMT Panel Debate: Research, African Economic Policy and the Role of Private Business

Monday 21 March 2011 8:30 -9:30 GMT Assessing the Millennium Villages Program

Monday 21 March 2011 9:30-10:30 GMT Keynote speech on 'Education as Liberation?' by leading US academic Michael Kremer

Tuesday 22 March 2011 16:30-18:30 GMT Panel Debate: Randomized Controlled Trials or Structural Models (or both... or neither...)?:

I will be presenting my work on family planning in Ethiopia (joint with Kathleen Beegle and Luc Christiaensen, both from the World Bank). Unfortunately, that will not be aired live ;-).

Pacific Conference for Development Economics (PacDev)

in , ,

I presented my paper on family planning in Ethiopia (joint with Kathleen Beegle and Luc Christiaesen, both from the World Bank) at the 8th annual Pacific Conference for Development Economics held at UC Berkeley. I also chaired a session on "Local Economic Shocks and Risk Sharing." As usual the conference was well attended and Ted Miguel did a great job at putting together a very nice conference.

CSDE seminar presentation on family planning in Ethiopia

in , , ,

I am presenting my paper "Family Planning and Fertility: Estimating Program Effects using Cross-sectional Data" today at the CSDE seminar series. The seminar runs from 12.30 to 1.30 PM and is at Thomson Hall, rm 125. You can find the current version of the paper here. The paper is joint with Kathleen Beegle and Luc Christiaensen. The abstract is:

This paper uses a novel method of identifying the effects of a family planning program when there is endogenous program placement and only cross-sectional data are available, a situation common in many developing countries. Using data from Ethiopia we find that access to family planning substantially reduces the number of children ever born for women without education; the reduction is especially pronounced for women younger than 20 and older than 30. Completed fertility, measured as children ever born for women aged 40 to 45, falls by more than one birth with access to family planning. These effects are statistically significant and substantially larger than previous studies have found. For women who have gone to school there is no evidence of an impact of family planning on fertility. Based on a relative small reduction in child mortality we argue that the effect on fertility is due to family planning access and not the concurrent presence of health facilities. Finally, family planning access reduces unwanted fertility, especially for older women.