A Comparison of Conventional and Organic Milk Production Systems in the U.S.

Replaced with revised version of paper 07/23/07.Farm Management,

The Profitability of Organic Soybean Production

Results from long-term experimental trials suggest that similar yields and lower costs are possible with organic compared to conventional soybeans, but there is little information about the relative costs and returns on commercial farms. This study examines the profitability of commercial soybean production using a nationwide survey of soybean producers for 2006 that includes a targeted sample of organic growers. Treatment-effect models are specified to isolate the impact of choosing the organic approach on various levels of soybean production costs. Organic soybean costs range from about $1 to$6 per bushel higher than those for conventional soybeans due to both lower yields and higher per-acre costs, while the average organic price premium in 2006 is more than $9 per bushel. High returns to organic production are attributed to the significant price premiums paid for organic soybeans in 2006, and these price premiums have remained high in 2007 and 2008. However, much higher conventional soybean prices and increased fuel prices may have reduced the incentive for planting organic soybeans.Crop Production/Industries,

The ABCs of the ABCs: The Development of Letter-Name and Letter-Sound Knowledge

The development of letter-sound (lS) and letter-name (LN) knowledge and associations with other reading skills differed in 91 children followed from the beginning of kindergarten through the middle of first grade: Previous LN predicted both subsequent LN and LS, but previous LS predicted only subsequent LS. Correlations of LN and LS within each testing time were modest, and both were substantially correlated with alphabet ordering across time. Both LS and LN contributed unique variance in predicting subsequent reading-related skills. Children\u27s knowledge of letter sounds was dependent upon corresponding letter names, supporting Treiman et al.\u27s (1994) letter-name hypothesis. Results suggest that alphabet knowledge consists of both LN and LS, which have different developmental patterns

Food Insecurity Among College Students: Implication for Wellbeing and Academic Success

Introduction: Food insecurity is associated with many negative effects such as increased stress and reduced well-being. Food insecurity among college students is a growing area of research as students often leave school due to financial concerns, mental health struggles, and illness. This study was conducted to assess student food insecurity in the hopes of learning how to better assist students\u27 wellbeing and success. Methods: Using both standardized assessments and researcher-developed questions, an online survey was created to examine food insecurity, sleep, mental and physical health, ability to focus on academics, and awareness and usage of food resources. Participants were recruited from Winona State University (N = 155). Results: Of participants surveyed, 21% reported low to very low food security. Among the participants that responded to food resource usage, only 4% reported using any food resources. Correlational analyses found that food insecurity was associated with greater symptoms of stress, anxiety, and depression. Additional correlational analyses found relationships between food insecurity and poor sleep quality, reduced ability to focus on classes, and lower physical health. Discussion: Findings highlight potential consequences of food insecurity, including concerns for students\u27 wellbeing and academic success. Negative impacts of food insecurity may extend to students\u27 completion, graduation, and retention rates. Therefore, compelling evidence supports the necessity of additional intervention at the university, state, and federal levels

Causal and functional interpretation of mu- and delta-opioid receptor profiles in mesoaccumbens and nigrostriatal pathways of an oral stereotypy phenotype

Spontaneous stereotypic behaviours are repetitive, compulsive, topographically invariant response patterns commonly observed in captive or domestic animals, which have been linked to dysfunction of basal ganglia input/output pathways. There is evidence that endogenous opioids play a key regulatory role in basal ganglia direct and indirect pathways, but their precise role, both causally and functionally, in spontaneous stereotypic behaviour is unclear. Here we examined the profile of mu- and delta-opioid receptors (density [Bmax] and affinity [Kd]) of basal ganglia structures in stereotypy (n = 10) and non-stereotypy (n = 10) animals using a competitive ligand binding approach. Mu receptor densities were significantly higher in the nucleus accumbens (p  0.15). Receptor binding affinity was only found to be significantly different between control and stereotypy animals for mu receptors on the caudate region; (p < 0.001). Our findings suggest that increased inhibition (via mu-opioid receptors) of the indirect (dorsal striatopallidal) pathways are associated with spontaneous stereotypy development. Data also suggested that different types of spontaneous stereotypies (e.g. oral versus locomotor) within or a cross species may have a different neurological basis. This may have important implications for understanding the aetiology and function of these behaviours. In some instances (oral stereotypy), the behaviour may be associated with allostasis, a process that could enhance the reward value of appetitive behaviour performance (as a starting point of stereotypy development)

Profiles in Parole Release and Revocation Rhode Island

Rhode Island does not have a sentencing commission or statutory sentencing guidelines. The Rhode Island Superior Court, which has jurisdiction over felony crimes and sentences, uses sentencing benchmarks as well as general, statutory authority to sentence offenders to a specific term of imprisonment. Rhode Island has had conditional release since 1896, and the Parole Board has existed in some form since 1915. In 1993, the legislature passed an act that increased the number of board members from 6 to 7 and added a fulltime chairperson

Invented spelling in English and pinyin in multilingual L1 and L2 Cantonese Chinese speaking children in Hong Kong

This research examined the relations among Cantonese phonological awareness, invented spelling in Pinyin (in Mandarin), and invented English spelling in 29 first language (L1) and 34 s language (L2) Cantonese-speaking second and third graders in Hong Kong. The purpose of this study was to understand how phonological awareness skills across languages are associated in multilinguals. We compared the phonological skills in the two groups (i.e., L1 and L2 Chinese speaking children) for the three official languages (i.e., Cantonese, Mandarin, and English) spoken in Hong Kong. The two groups did not differ on Cantonese phonological awareness, Mandarin Pinyin invented spelling, or English invented spelling, but the L1 group performed significantly better than the L2 group on Mandarin Pinyin tone skills, with non-verbal intelligence and grade level statistically controlled. In both groups, all three of the phonological sensitivity measures were significantly correlated with one another. With group, grade, and nonverbal IQ statistically controlled, only Mandarin Pinyin invented spelling but not Cantonese phonological awareness uniquely explained English invented spelling performance. In contrast, Pinyin invented spelling was uniquely explained by both English invented spelling and Cantonese phonological awareness skills. Results highlight some phonological transfer effects across languages

Association of the DYX1C1 Gene with Chinese Literacy in a Healthy Chinese Population

DYX1C1, the first dyslexia candidate gene, has been associated with developmental dyslexia in different populations, but its influence on reading abilities in the general population is less well known. Copy number variants (CNVs) have been implicated in neurodevelopmental and childhood-onset disorders involving cognitive development in previous studies. In this report, we investigated the extent to which genomic CNVs for the SNP previously linked to dyslexia, -3G/A (rs3743205) in the gene DYX1C1, contribute to Chinese and English literacy in the general population in a Chinese cohort, and whether these processes, in turn, are influenced by environmental factors, such as family income, parents’ education, and IQ. Our findings suggest that the logR ratio (which is a way to detect CNVs) of a previously reported dyslexia-related SNP, -3G/A (rs3743205) is significantly associated with Chinese literacy in a cohort of Chinese children with normal reading abilities

Quantitative multidimensional phenotypes improve genetic analysis of laterality traits

The UK Medical Research Council and Wellcome (Grant ref: 217065/Z/19/Z) and the University of Bristol provide core support for ALSPAC. This publication is the work of the authors and SP and JS will serve as guarantors for the analysis of the ALSPAC data presented in this paper. GWAS data were generated by Sample Logistics and Genotyping Facilities at Wellcome Sanger Institute and LabCorp (Laboratory Corporation of America) using support from 23andMe. Support to the genetic analysis was provided by the St Andrews Bioinformatics Unit funded by the Wellcome Trust [grant 105621/Z/14/Z]. The Hong Kong sample was funded through a Collaborative Research Fund from the Hong Kong Special Administrative Region Research Grants Council (CUHK8/CRF/13G, and C4054-17WF). JS is funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation, 418445085) and supported by the Wellcome Trust [Institutional Strategic Support fund, Grant number 204821/Z/16/Z]. SP is funded by the Royal Society (UF150663).Handedness is the most commonly investigated lateralised phenotype and is usually measured as a binary left/right category. Its links with psychiatric and neurodevelopmental disorders prompted studies aimed at understanding the underlying genetics, while other measures and side preferences have been less studied. We investigated the heritability of hand, as well as foot, and eye preference by assessing parental effects (n ≤ 5028 family trios) and SNP-based heritability (SNP-h2, n ≤ 5931 children) in the Avon Longitudinal Study of Parents and Children (ALSPAC). An independent twin cohort from Hong Kong (n = 358) was used to replicate results from structural equation modelling (SEM). Parental left-side preference increased the chance of an individual to be left-sided for the same trait, with stronger maternal than paternal effects for footedness. By regressing out the effects of sex, age, and ancestry, we transformed laterality categories into quantitative measures. The SNP-h2 for quantitative handedness and footedness was 0.21 and 0.23, respectively, which is higher than the SNP-h2 reported in larger genetic studies using binary handedness measures. The heritability of the quantitative measure of handedness increased (0.45) compared to a binary measure for writing hand (0.27) in the Hong Kong twins. Genomic and behavioural SEM identified a shared genetic factor contributing to handedness, footedness, and eyedness, but no independent effects on individual phenotypes. Our analysis demonstrates how quantitative multidimensional laterality phenotypes are better suited to capture the underlying genetics than binary traits.Publisher PDFPeer reviewe

Prevalence and heritability of handedness in a Hong Kong Chinese twin and singleton sample

Funding: Research Grants Council of the Hong Kong Special Administration Region (CUHK8/CRF/13G & C4054-17WF), by an internal grant entitled “Reading Development in Chinese and in English: Genetics and Neuroscience Correlates”(4930703) from The Chinese University of Hong Kong (CM is the PI on both grants), by a Hong Kong: Scotland Collaborative Research Partnership award from the Hong Kong Grants Council (CMis the PI for the Hong Kong side) and the Scottish Funding Council (SP is the PI for the Scotland side). It was additionally funded by an International Exchange Kan Tongo Po Visiting Fellowship to SP. SP is a Royal Society University Research Fellow.Background Left-handedness prevalence has been consistently reported at around 10% with heritability estimates at around 25%. Higher left-handedness prevalence has been reported in males and in twins. Lower prevalence has been reported in Asia, but it remains unclear whether this is due to biological or cultural factors. Most studies are based on samples with European ethnicities and using the preferred hand for writing as key assessment. Here, we investigated handedness in a sample of Chinese school children in Hong Kong, including 426 singletons and 205 pairs of twins, using both the Edinburgh Handedness Inventory and Pegboard Task. Results Based on a binary definition of writing hand, we found a higher prevalence of left-handedness (8%) than what was previously reported in Asian datasets. We found no evidence of increased left-handedness in twins, but our results were in line with previous findings showing that males have a higher tendency to be left-handed than females. Heritability was similar for both hand preference (21%) and laterality indexes (22%). However, these two handedness measures present only a moderate correlation (.42) and appear to be underpinned by different genetic factors. Conclusion In summary, we report new reference data for an ethnic group usually underrepresented in the literature. Our heritability analysis supports the idea that different measures will capture different components of handedness and, as a consequence, datasets assessed with heterogeneous criteria are not easily combined or compared.PreprintPublisher PDFPeer reviewe