Sentences with phrase «flawed research designs»

The flim - flam man resembles a social scientist and cites evidence to make his case, but often relies on faulty evidence drawn from flawed research designs as well as selective and distorted interpretations of evidence.

Kingston and Nash evaluated each study in Black and Wiliam's meta - analysis and discovered many that had flawed research designs, reducing the number of valid studies from 300 to 13.

Not exact matches

Harris discussed ways the science can go astray, steps researchers can take to correct flaws in their research design and practice, and precautions journalists should keep in mind as they sort through the claims and counter-claims made in the vast number of research papers published each year.

HMB is often sold as a muscle - building aid but the research purported to demonstrate these benefits is shaky at best, hindered most by design flaws.

And while specific pheromones are known to trigger specific responses in animals from bees to squid, scientists have yet to isolate them in humans, and according to Smithsonian Magazine, a review of scientific literature on the study of pheromones «found that most research on the topic was subject to major design flaws.»

In addition, the pre-A-Plus Florida analysis reported by the Economic Policy Institute is plagued by several research design flaws.

The fundamental flaw of a «best practices» approach, as any student in a half - decent research - design course would know, is that it suffers from what is called «selection on the dependent variable.»

Many of those evaluations — in New York City, Dayton, Ohio, and Washington, D.C., as well as in the states of Florida, Minnesota, and Louisiana — reported a modest increase or neutral impact on student achievement and graduation rates.9 The findings of some of these studies, however, have more recently been called into question as methodological flaws were discovered when adding additional years or replicating the study.10 As a result, recent voucher program evaluations employ more rigorous research methods such as experimental and quasi-experimental designs and refine their use of certain variables.

Now the air conditioner smells musty, which through a little research appears to be a design flaw that allows water to collect deep in the AC system, and the brakes started sqeaking.

ACE thinks that some of HLL's early studies were not conducted as well as they could have been, and that there were problems in some of the write - ups of those studies.262 For example, HLL conducted five studies with the same participant pool, which might have caused the results of some of those studies to be influenced by earlier experimental manipulations.263 Some studies also did not include appropriate control groups, and many studies did not control for desirability bias.264 We think these early studies helped influence animal advocates to see research into animal advocacy methods as possible and desirable, but that their utility is otherwise limited by some of their design flaws.

This points to a flaw in the data set rather than the research design, he said in an email, and he thinks the authors might have found similar results to previous work if they had used a more «fully consistent and accurate» database.

Frustrated, we did a bit of research online and the bearing design appears to be a major design flaw of some front loaders (one small broken part means you have to replace the whole drum?!)

Known inside the chip and software industry since the middle of 2017, and deeply embedded in the fundamental design of the processors, the problems were reported by the Google Project Zero security research team — one of several to discover the flaws — to exist in some form in most Intel CPUs since 1995.