External adjustment and U.S. macroeconomic performance

Deficit financing ; Saving and investment ; Gross national product

"The Minimum Wage and the Employment of Youth: Evidence from the NLSY"

Using panel data on individuals from the National Longitudinal Survey of Youth, we find that employed individuals who were affected by the increases in the federal minimum wage in 1979 and 1980 were 3 to 4% less likely to be employed a year later, even after accounting for the fact that workers employed at the minimum wage may differ from their peers in unobserved ways. These results were obtained using a methodology similar in spirit 10 Card's recent work on the topic, although we use individual rather than state-level data, and an earlier time period.

Operation Comics: The Story Continues

During the 2008-2009 academic year, the author K. wrote three issues of Operation Comics, a comic book with embedded mathematics content appropriate for 4th through 6th grade students. Several printed comics were placed in Cumberland Trace Elementary in the Warren County School System in Bowling Green, Kentucky, US. The author Ta. was enlisted to measure the impact of the comics on the attitudes and motivation of the students using the comics. A preliminary report was given by K. at the 2009 Bridges Banff Conference, and the written report appeared in the proceedings. Since then, data has been collected on the initial cohort of students using the comics, and the project has been given new life with an infusion of money from an anonymous corporate donor and a new illustrator, author Tu. This manuscript will give an abbreviated summary of our initial findings, and will show how Tu. is addressing the presentation of mathematical content in her illustrations in three new comics. We will also outline the 2-1/2 year study we are beginning during the Spring 2011 semester, and how the project is spawning other outreach activities

Predicting Partisan Redistricting Disputes

Partisan redistricting disputes are relatively rare occurrences. This paper explores the factors that lead to partisan disputes over congressional redistricting plans. In previous work single party control of both houses of the state legislature and the governorship emerged as a key correlate of partisan redistricting in the 1980s. This paper presents an interactive statistical model of partisan redistricting plans. The basic conclusion is that in addition to single party control, the nature of the voting role and the political competitiveness of the states effect the likelihood of partisan redistricting

Bruce T. Tsurutani Receives 2009 John Adam Fleming Medal

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95226/1/eost17116.pd

Do in-Kind Transfers Damage Local Markets? The Case of TOMS Shoe Donations in El Salvador

We carry out a cluster randomized trial among 979 households in rural El Salvador to test whether shoe donations exhibit negative impacts on local shoe markets. Households in half of our communities were given a pair of children’s shoes at baseline (treatment communities), while all households were given coupons that could be used for shoe purchases at a local shoe store. Although point estimates on coupon redemption and difference-in-difference estimations indicate shoe purchases to be slightly lower among households receiving the donated shoes, we find no statistically significant difference in market shoe purchases between treatment and control households

Autism Charter Schools: Legally Vulnerable or Viable?

Perhaps due to the dramatic increase in children diagnosed with autism, a new type of charter school has emerged that is designed to specifically serve students with autism. If these autism charter schools illegally segregate students with autism from typically developing peers, they are vulnerable to legal challenges. In this Article, we identified many constitutional and statutory violations that could exist at autism charter schools; however, our review of the litigation found that autism charter schools have not been challenged for these legal violations. Instead, we found only one charter school case alleging segregation based on ability level and eight cases alleging racial segregation. Based on our findings, we speculate why more cases involving autism charter schools did not arise, predict that more lawsuits are probable, and provide recommendations to prevent future litigation alleging equal protection violations at these charter schools

Contingency Management in an Athletic Study Hall

A contingency management system, cooperatively developed in NTSU's School of Community Service and the Athletic Department was implemented to increase the amount of time student athletes (with GPAs below 2.0) spent studying. Repeated reversals were used to demonstrate effectiveness of the contingencies used-i.e., students' on-task study behavior (looking at books, underlining or making notes, memorizing with book open) resulted in early release from study hall. Data takers observed individual students every 7 seconds and those meeting a 90% on-task criterion left study hall 30 minutes early. Data are included that demonstrate the effectiveness of this early-release contingency on proportion of time spent studying. Increasing numbers of students were released on-task ov er time. Additionally, data were collected on numbers choosing to remain in study hall after given permission to leave

The Fission Yeast RNA Binding Protein Mmi1 Regulates Meiotic Genes by Controlling Intron Specific Splicing and Polyadenylation Coupled RNA Turnover

The polyA tails of mRNAs are monitored by the exosome as a quality control mechanism. We find that fission yeast, Schizosaccharomyces pombe, adopts this RNA quality control mechanism to regulate a group of 30 or more meiotic genes at the level of both splicing and RNA turnover. In vegetative cells the RNA binding protein Mmi1 binds to the primary transcripts of these genes. We find the novel motif U(U/C/G)AAAC highly over-represented in targets of Mmi1. Mmi1 can specifically regulate the splicing of particular introns in a transcript: it inhibits the splicing of introns that are in the vicinity of putative Mmi1 binding sites, while allowing the splicing of other introns that are far from such sites. In addition, binding of Mmi1, particularly near the 3' end, alters 3' processing to promote extremely long polyA tails of up to a kilobase. The hyperadenylated transcripts are then targeted for degradation by the nuclear exonuclease Rrp6. The nuclear polyA binding protein Pab2 assists this hyperadenylation-mediated RNA decay. Rrp6 also targets other hyperadenylated transcripts, which become hyperadenylated in an unknown, but Mmi1-independent way. Thus, hyperadenylation may be a general signal for RNA degradation. In addition, binding of Mmi1 can affect the efficiency of 3' cleavage. Inactivation of Mmi1 in meiosis allows meiotic expression, through splicing and RNA stabilization, of at least 29 target genes, which are apparently constitutively transcribed

Designing and evaluating complex interventions to improve health care

Complex interventions are “built up from a number of components, which may act both independently and interdependently.”1 2 Many health service activities should be considered as complex. Evaluating complex interventions can pose a considerable challenge and requires a substantial investment of time. Unless the trials illuminate processes and mechanisms they often fail to provide useful information. If the result is negative, we are left wondering whether the intervention is inherently ineffective (either because the intervention was inadequately developed or because all similar interventions are ineffective), whether it was inadequately applied or applied in an inappropriate context, or whether the trial used an inappropriate design, comparison groups or outcomes. If there is a positive effect, it can be hard to judge how the results of the trial might be applied to a different context (box 1)