Sentences with phrase «effect of a single factor»

Because of the large number of variables that intervene between the message of a television personality and final political choices, it is unlikely that the contributory effect of a single factor could ever be isolated definitively.

I agree that it's hard to isolate the effects of any single factor when so much change occurred so quickly.

Not exact matches

While the relatively strong performance of our stock selection approach has been an important factor in the Fund's returns since inception, even a single holding in a portfolio of over 200 can exert an effect on a day - to - day basis.

When all allowance has been made for these limiting factors — the chances of oral transmission, the effect of translation, the interest of teachers in making the sayings «contemporary,» and simple human fallibility — it remains that the first three gospels offer a body of sayings on the whole so consistent, so coherent, and withal so distinctive in manner, style content, that no reasonable critic should doubt, whatever reservations he may have about individual sayings, that we find reflected here the thought of a single, unique teacher.

These factors have been long - studied for large dams, yet have been largely ignored for small dams — especially considering the potential cumulative effects of many small dams in a single river system.

More important, the study concluded that no single factor or technology accounted for this increase in yields; rather, it was the result of a consistently observed greater - than - additive effect of factors acting together that produced the highest yields.

«So there could be a large effect of a single gene, but there is some other factor necessary for developing disease,» says Richard Lifton at Yale University, Connecticut, US, who led the new research.

Years after receiving a single dose of gene therapy, patients on the hemophilia B trial continued to produce their own clotting factor from the normal transferred gene with minimal side effects.

Three recent experimental studies focused on low consumption / exposure.949596 In one study, 29 smokers each consumed a single cigarette, immediately after which they had a significant decrease in blood vessel output power and significant increase in blood vessel ageing level and remaining blood volume 25 minutes later, as markers of atherosclerosis.94 In another study, human coronary artery endothelial cells were exposed to the smoke equivalent to one cigarette, which led to activation of oxidant stress sensing transcription factor NFR2 and up - regulation of cytochrome p450, considered to have a role in the development of heart disease.95 These effects were not seen when heart cells were exposed to the vapour from one e - cigarette.95 A study exposed adult mice to low intensity tobacco smoke (two cigarettes) for one to two months and found adverse histopathological effects on brain cells.96

The delicate balance between the human microbiome and the development of psychopathologies is particularly interesting given the ease with which the microbiome can be altered by external factors, such as diet, 23 exposure to antimicrobials24, 25 or disrupted sleep patterns.26 For example, a link between antibiotic exposure and altered brain function is well evidenced by the psychiatric side - effects of antibiotics, which range from anxiety and panic to major depression, psychosis and delirium.1 A recent large population study reported that treatment with a single antibiotic course was associated with an increased risk for depression and anxiety, rising with multiple exposures.27 Bercik et al. 28 showed that oral administration of non-absorbable antimicrobials transiently altered the composition of the gut microbiota in adult mice and increased exploratory behaviour and hippocampal expression of brain - derived neurotrophic factor (BDNF), while intraperitoneal administration had no effect on behaviour.

A 2006 study by Michèle Belot and Marco Francesconi into the relative effects of preference versus opportunity in mate selection showed, while concluding that opportunity was more important than preference, that a woman's age is the single most important factor determining demand by men.

Consistent with other research on school effects, we find that the school a student attends can explain a substantial share of the overall variation in test scores: that single factor explains 34 percent of the variation in math scores and 24 percent of the variation for reading.

Given how much educational inequity is linked to factors outside the education system, such as growing income inequality and housing segregation, it may be asking too much of schools to expect them to single - handedly eliminate the effects of these inequities.

If C02 is the largest single contributing factor to the Greenhouse Effect (because supposedly water vapor is only involved as a feedback to primary chemistry involving C02 itself), and C02 lags temperature increases (as has been stated on this very blog), how has the Earth ever returned to colder glacial conditions following periods of warming?

Whether the decline we report can be attributed to single factors such as circulation changes that have not yet been documented, a fundamental difference in the cycling of carbon in this region, an alteration of carbon metabolism in these animals, perhaps via an effect of changing seawater carbon chemistry on shell composition (e.g. [8]-RRB-, or undescribed interactions among these factors is unknown.

Hard for me to digest in a single sitting but at the risk of another «well duh» a significant difference seems to be in Curry's use of 30 year periods and Schmidts dismissal of these as being too short to accurately evaluate the effects of natural factors.

For example, the use of a single scaling for all other anthropogenic forcers doesn't sit well with me given the combination of spatially - heterogeneous large (> 1W / m2) positive and negative factors — but really it needs to be shown why such a thing is an issue, and what effect it might have.

As a side note, his source uses single factor subtraction to determine the radiative effect of each gas.

There are few factorial experiments on multiple changing factors, but they suggest interactions that are not predictable from single factor experiments — such as the dampening effect of elevated CO2 on California C3 grassland responses to increased rainfall, nitrate and air temperature (Shaw et al., 2002).

Astoundingly all the main influences on average global temperatures have been completely ignored in favour of one single tiny factor namely any enhancement of greenhouse effect from anthropogenic CO2.

The single - cycle Hubbert model does not consider the effects of these factors.»

Because of scientists» focus on single - factor experiments (change carbon dioxide, or change black carbon, or change sulphates), we have not historically provided enough information for policymakers to properly weigh up these different effects.

Research does suggest that growing up in a single - parent home has a negative impact on children.49 — 51 Factors, such as parental education, family income, and neighborhood resources, may buffer children from the negative effects of single - parent families, 52,53 but often are not present in the economically distressed communities in which our participants grew up.

Several of the most commonly identified risk factors in previous research were identified in this study, including being male, membership in a single - parent or stepfamily, 5 high levels of parent - reported childhood activity, 23,24 maternal mental health problems, 25 and a history of teenage parenthood.26 What is relatively novel about this report is the consideration of the joint effects of psychosocial risk factors, while controlling for multiple indicators of social class and the assessment of both accidents and illnesses in a large community sample followed prospectively since pregnancy.

3 FACTORS WHICH HELP OR HINDER IMPROVEMENT 3.1 Introduction 3.2 Key findings 3.3 Domains of influence on cognitive development 3.3.1 Demographic characteristics 3.3.2 Family composition 3.3.3 Parenting factors 3.3.4 Experience of childcare and pre-school 3.3.5 Child health and early development 3.3.6 Parenting support 3.3.7 Maternal health and health behaviours 3.3.8 Material and economic circumstances 3.4 Summary of single domain effects 3.5 Combined domain effects 3.5.1 Summary of combined domain effects 3.5.2 Explaining the effect of education on gaps in FACTORS WHICH HELP OR HINDER IMPROVEMENT 3.1 Introduction 3.2 Key findings 3.3 Domains of influence on cognitive development 3.3.1 Demographic characteristics 3.3.2 Family composition 3.3.3 Parenting factors 3.3.4 Experience of childcare and pre-school 3.3.5 Child health and early development 3.3.6 Parenting support 3.3.7 Maternal health and health behaviours 3.3.8 Material and economic circumstances 3.4 Summary of single domain effects 3.5 Combined domain effects 3.5.1 Summary of combined domain effects 3.5.2 Explaining the effect of education on gaps in factors 3.3.4 Experience of childcare and pre-school 3.3.5 Child health and early development 3.3.6 Parenting support 3.3.7 Maternal health and health behaviours 3.3.8 Material and economic circumstances 3.4 Summary of single domain effects 3.5 Combined domain effects 3.5.1 Summary of combined domain effects 3.5.2 Explaining the effect of education on gaps in ability

Other risk factors (i.e., teen or single parenthood, very low income, high initial levels of problem behavior) showed no predictive effects, implying intervention was at least as successful at helping the most disadvantaged families, compared to more advantaged.

It is important to note that many of the demographic factors were confounded in our sample (e.g., 64 % of the non-White mothers in our sample were single), and it is therefore difficult to tease out the effects of race / ethnicity and marital status on parenting behaviors and adolescent adjustment.

Cumulative effects show that the focus of prevention efforts should not be on single factors, but on multiple factors associated with girls» disruptive behavior.