Essays in Applied Microeconomics: Dissertation Summary

In the United States, like many developed countries, government provides substantial support for primary, secondary, and postsecondary education. In 2011, expenditures on education are expected to equal 7.6 percent of GDP (National Center for Education Statistics 2011). At the postsecondary level, federal grants and loans for college students aim to ameliorate credit market imperfections. Publicly provided K–12 education insures universal access to human capital development for all children. The three essays that make up this dissertation broadly focus on the role government should play in financing and providing education

Short Run Impacts of Accountability on School Quality

In November of 2007, the New York City Department of Education assigned elementary and middle schools a letter grade (A to F) under a new accountability system. Grades were based on numeric scores derived from student achievement and other school environmental factors such as attendance, and were linked to a system of rewards and consequences. We use the discontinuities in the assignment of grades to estimate the impact of accountability in the short run. Specifically, we examine student achievement in English Language Arts and mathematics (measured in January and March of 2008, respectively) using school level aggregate data. Although schools had only a few months to respond to the release of accountability grades, we find that receipt of a low grade significantly increased student achievement in both subjects, with larger effects in math. We find no evidence that these grades were related to the percentage of students tested, implying that accountability can cause real changes in school quality that increase student achievement over a short time horizon. We also find that parental evaluations of educational quality improved for schools receiving low accountability grades. However, changes in survey response rates hold open the possibility of selection bias in these complementary results.

ProPelled: The Effects of Grants on Graduation, Earnings, and Welfare

We estimate the effect of grant aid on poor college students’ attainment and earnings using student-level administrative data from four-year public colleges in Texas. To identify these effects, we exploit a discontinuity in grant generosity as a function of family income. Eligibility for the maximum Pell Grant significantly increases degree receipt and earnings beginning four years after entry. Within 10 years, imputed taxes on eligible students’ earnings gains fully recoup total government expenditures generated by initial eligibility. To clarify how these estimates relate to social welfare, we develop a general theoretical model and derive sufficient statistics for the welfare implications of changes in the price of college. Whether additional grant aid increases welfare depends on (1) net externalities from recipients’ behavioral responses and (2) a direct effect of mitigating credit constraints or other frictions that inflate students’ in-school marginal utility. Calibrating our model using nationally representative consumption data suggests that increasing grant aid for the average college student by $1 could generate negative externalities as high as$0.50 and still improve welfare. Applying our welfare formula and estimated direct effects to our setting and others suggests considerable welfare gains from grants that target low-income students

Fructan synthesis, accumulation, and polymer traits I:Festulolium chromosome substitution lines

The fructans found as storage carbohydrates in temperate forage grasses have a physiological role in regrowth and stress tolerance. They are also important for the nutritional value of fresh and preserved livestock feeds, and are potentially useful as feedstocks for biorefining. Seasonal variation in fructan content and the capacity for de novo fructan synthesis have been examined in a Festulolium monosomic substitution line family to investigate variation in the polymers produced by grasses in the ryegrass-fescue complex. There were significant differences between ryegrass and fescue. Fescue had low polymeric fructan content and a high oligomer/polymer ratio; synthesis of polymers longer than degree of polymerisation 6 (DP6) from oligomers was slow. However, extension of polymer length from DP10/DP20 upwards appeared to occur relatively freely, and, unlike ryegrass, fescue had a relatively even spread of polymer chain lengths above DP20. This included the presence of some very large polymers. Additionally fescue retained high concentrations of fructan, both polymeric and oligomeric, during conditions of low source/high sink demand. There were indications that major genes involved in the control of some of these traits might be located on fescue chromosome 3 opening the possibility to develop grasses optimised for specific applications

ProPelled: The Effects of Grants on Graduation, Earnings, and Welfare

We estimate the effect of grant aid on poor college students’ attainment and earnings using student-level administrative data from four-year public colleges in Texas. To identify these effects, we exploit a discontinuity in grant generosity as a function of family income. Eligibility for the maximum Pell Grant significantly increases degree receipt and earnings beginning four years after entry. Within 10 years, imputed taxes on eligible students’ earnings gains fully recoup total government expenditures generated by initial eligibility. To clarify how these estimates relate to social welfare, we develop a general theoretical model and derive sufficient statistics for the welfare implications of changes in the price of college. Whether additional grant aid increases welfare depends on (1) net externalities from recipients’ behavioral responses and (2) a direct effect of mitigating credit constraints or other frictions that inflate students’ in-school marginal utility. Calibrating our model using nationally representative consumption data suggests that increasing grant aid for the average college student by $1 could generate negative externalities as high as$0.50 and still improve welfare. Applying our welfare formula and estimated direct effects to our setting and others suggests considerable welfare gains from grants that target low-income students

Accounting and social movements: An exploration of critical accounting praxis

A central tenet of critical accounting research maintains the need to challenge and change existing social relations; moving towards a more emancipated and equitable social order. The question of how critical accounting research upholds this principle has been intermittently discussed. This paper aims to engage with, and further, this discussion by contributing to research linking accounting information to social movements. The paper reviews the literature on accounting and social movements, central to which is the work of Gallhofer and Haslam; using their work as a departure point we discussion the nature of accounting information and focus on social movement unionism (SMU). Drawing on Bakhtinian dialogics and classical Marxism we develop an alternative theoretical framework to analyse an example of accounting information and social movements, covering a trade union pay dispute. The paper concludes with a discussion of the class nature of accounting information, including an exploration of the implications for accounting praxis and agency in the struggles for an emancipated world. The paper builds on the limited amount of existing work in this area; exploring the ‘class belongingness’ of accounting information and developing an understanding which can help guide the praxis of critical accounting researchers

Downward wave reflection as a mechanism for the stratosphere-troposphere response to the 11-year Solar Cycle

The effects of solar activity on the stratospheric waveguides and downward reflection of planetary waves during northern early to mid- winter are examined. Under high solar (HS) conditions enhanced westerly winds in the subtropical upper stratosphere and the associated changes in the zonal wind curvature led to an altered waveguide geometry across the winter period in the upper stratosphere. In particular, the condition for barotropic instability was more frequently met at 1 hPa near the polar night jet centred at ~55°N. In early winter the corresponding change in wave forcing was characterized by a vertical dipole pattern of the Eliassen-Palm (E-P) flux divergent anomalies in the high-latitude upper stratosphere accompanied by poleward E-P flux anomalies. These wave forcing anomalies corresponded with negative vertical shear of zonal mean winds and the formation of a vertical reflecting surface. Enhanced downward E-P flux anomalies appeared below the negative shear zone; they coincided with more frequent occurrence of negative daily heat fluxes and associated with eastward acceleration and downward group velocity. These downward reflected wave anomalies had a detectable effect on the vertical structure of planetary waves during November to January. The associated changes in tropospheric geopotential height contributed to a more positive phase of the North Atlantic Oscillation in January and February. These results suggest that downward reflection may act as a ‘top-down’ pathway by which the effects of solar ultraviolet (UV) radiation in the upper stratosphere can be transmitted to the troposphere

Fructan synthesis, accumulation and polymer traits II:Fructan pools in populations of perennial ryegrass (Lolium perenne L.) with variation for water-soluble carbohydrate and candidate genes were not correlated with biosynthetic activity and demonstrated constraints to polymer chain extension

Differences have been shown between ryegrass and fescue within the Festulolium subline introgression family for fructan synthesis, metabolism and polymer-size traits. It is well-established that there is considerable variation for water-soluble carbohydrate and fructan content within perennial ryegrass. However there is much still to be discovered about the fructan polymer pool in this species, especially in regard to its composition and regulation. It is postulated that similar considerable variation for polymer traits may exist, providing useful polymers for biorefining applications. Seasonal effects on fructan content together with fructan synthesis and polymer-size traits have been examined in diverse perennial ryegrass material comprising contrasting plants from a perennial ryegrass F2 mapping family and from populations produced by three rounds of phenotypic selection. Relationships with copy number variation in candidate genes have been investigated. There was little evidence of any variation in fructan metabolism across this diverse germplasm under these conditions that resulted in substantial differences in the complement of fructan polymers present in leaf tissue at high water-soluble carbohydrate concentrations. The importance of fructan synthesis during fructan accumulation was unclear as fructan content and polymer characteristics in intact plants during the growing season did not reflect the capacity for de novo synthesis. However, the retention of fructan in environmental conditions favouring high sink / low source demand may be an important component of the high sugar trait and the roles of breakdown and turnover are discussed

Novel pathogenic COX20 variants causing dysarthria, ataxia, and sensory neuropathy.

COX20/FAM36A encodes a mitochondrial complex IV assembly factor important for COX2 activation. Only one homozygous COX20 missense mutation has been previously described in two separate consanguineous families. We report four subjects with features that include childhood hypotonia, areflexia, ataxia, dysarthria, dystonia, and sensory neuropathy. Exome sequencing in all four subjects identified the same novel COX20 variants. One variant affected the splice donor site of intron-one (c.41A>G), while the other variant (c.157+3G>C) affected the splice donor site of intron-two. cDNA and protein analysis indicated that no full-length cDNA or protein was generated. These subjects expand the phenotype associated with COX20 deficiency

The sound of violets: the ethnographic potency of poetry?

This paper takes the form of a dialogue between the two authors, and is in two halves, the first half discursive and propositional, and the second half exemplifying the rhetorical, epistemological and metaphysical affordances of poetry in critically scrutinising the rhetoric, epistemology and metaphysics of educational management discourse. Phipps and Saunders explore, through ideas and poems, how poetry can interrupt and/or illuminate dominant values in education and in educational research methods, such as: • alternatives to the military metaphors – targets, strategies and the like – that dominate the soundscape of education; • the kinds and qualities of the cognitive and feeling spaces that might be opened up by the shifting of methodological boundaries; • the considerable work done in ethnography on the use of the poetic: anthropologists have long used poetry as a medium for expressing their sense of empathic connection to their field and their subjects, particularly in considering the creativity and meaning-making that characterise all human societies in different ways; • the particular rhetorical affordances of poetry, as a discipline, as a practice, as an art, as patterned breath; its capacity to shift phonemic, and therewith methodological, authority; its offering of redress to linear and reductive attempts at scripting social life, as always already given and without alternative