Sentences with phrase «experimental control studies»
No other teacher effectiveness model or teacher evaluation model has subjected its components to such rigorous experimental control studies, all conducted by practicing teachers in real classrooms.
http://www.marzanoevaluation.com/ Not exact matches
John Eppig, a reproductive biologist at Jackson Laboratory in Bar Harbor, Maine raised the concern that no animal studies with a control group have been done — a standard practice with experimental medical procedures — yet somehow the procedure is being tried on humans.
In response to «Effects of Energy Drinks Mixed with Alcohol on Behavioral Control: Risks for College Students Consuming Trendy Cocktails,» a study to be published in the July issue of Alcoholism: Clinical & Experimental Research, Dr. Maureen Storey, senior vice president of science policy for the American Beverage Association, issued the following statement:
There is experimental evidence that this old standby really helps: In a study that randomly assigned fearful children to receive a toy «huggy puppy,» kids exhibited fewer nighttime fears and sleep problems than did children in a control group.
When a study is done showing that breastfeeding lowers the risk of a certain disease, breastfeeding is the experimental group and artificial feeding is the control group.
Studies compare control groups and experimental groups.
A well - designed experimental study isolates those variables that concern us, and contrasts them with a control condition that doesn't include those variables.
Measurement bias was an interesting one for water birth because measurement bias occurs when a study doesn't do a good job of sorting people into the experimental and control groups.
Attrition bias is that problem I explained earlier — when you have uneven dropout from a study between the control and experimental groups.
The strongest research methods for psychological studies are: qualitative findings versus quantitative; experimental rather than descriptive or correlational; controlled - experiment, meta - analysis, and observation designs over archival, case study, computational modeling, content analysis, field experiment, interview, neuroimaging, quasi experiment, self - report inventory, random sample survey, or twin study; and prospective (where subjects are recruited prior to the proposed independent effects being administered) and longitudinal (where subjects are studied at multiple time points) rather than retrospective or cross-section study.
One of the possible confounding factors noted in their study was that the experimental group had more of the adolescents living with their parents, whereas adolescents in the control group were more likely to live with their significant other.
After the number of mothers for the experimental group were selected, all women eligible for the study were added to the control group until the sample was complete.
In a controlled study conducted in experimental ponds, researchers found dramatic differences in pond ecosystems depending on the ratio of males to females in the mosquitofish populations.
The study consisted of 30 children ages 8 - 14, with 17 randomized to an experimental group and 13 in the control group.
The Illinois study divided its numerous subjects into five groups: three experimental groups and active and passive control groups.
According to Fyhri, the study carried out by the Institute of Transport Economics is the first controlled experimental study of people's actual use of electric bikes.
«It is unrealistic to expect the same level of data quality and experimental control from real - world neuroscience studies as we demand from laboratory experiments,» Dikker says.
To further identify the role of TAZ, the research team studied breast tissue at different stages of development using two groups of mice: a control group with the TAZ gene and an experimental group of knock - out mice with the TAZ gene deleted.
The study split prediabetics into a control group and two experimental groups — one in which subjects exercised and watched their weight and another in which people took metformin, a drug that improves insulin sensitivity in the liver.
«Most all experimental studies comparing independent and controlled sources show no significant difference in perceived credibility,» Howes said.
Black students in the experimental group, in contrast, did significantly better academically than their peers in the control group — cutting in half the average achievement gap between racial groups seen at the start of the study.
The results of a study recently published by the Journal of Experimental Child Psychology show that bilingual children are better than monolinguals at a certain type of mental control, and that those children with more practice switching between languages have even greater skills.
The study, supported by grants from the National Institutes of Health and the U.S. Centers for Disease Control and Prevention, assigned each cluster to one of three experimental options: a control group (meaning no treatment); a basic cleanup; or a «cleaning and greening» treatment, including a lawn, a few trees and a low perimeter fence — «to show that the lot was cared for and to deter illegal dumping.Control and Prevention, assigned each cluster to one of three experimental options: a control group (meaning no treatment); a basic cleanup; or a «cleaning and greening» treatment, including a lawn, a few trees and a low perimeter fence — «to show that the lot was cared for and to deter illegal dumping.control group (meaning no treatment); a basic cleanup; or a «cleaning and greening» treatment, including a lawn, a few trees and a low perimeter fence — «to show that the lot was cared for and to deter illegal dumping.»
The doctors and 254 women who provided contact information and enrolled in the study were assigned randomly to either a control group (the women received a list of resources and normal physicians» care if needed; the doctors received a basic education packet on intimate partner violence) or an experimental group.
In Heinrichs» and Dawans» study, male participants were assigned to either an experimental group, with a stress procedure (a public speaking exercise followed by a complicated mental arithmetics), or a control group with no stress.
«We used a highly controlled experimental design, to ensure that any benefits of mindfulness training were not likely explained by people believing it was a better treatment,» said co-author Dr Tom Freeman (Senior fellow of the Society for the Study of Addiction), who was part of the research team while based at UCL.
This study provides experimental evidence which shows the important role of RNA levels in the controlling the fate of embryonic stem cells, and shows an understanding of RNA's ability to differentiate stem cells at the molecular level.
But a much cited study, published in 1984 in the journal Science by environmental psychologist Roger Ulrich, now at Texas A&M University, was the first to use the standards of modern medical research — strict experimental controls and quantified health outcomes — to demonstrate that gazing at a garden can sometimes speed healing from surgery, infections and other ailments.
The study found that after 12 months, the experimental group lost 8.5 percent more of its excess weight than the control group.
Specifically, Delfraissy says if the monkey studies and the finer analysis of patient samples have positive results, perhaps the standard of care should include favipiravir as part of the control arm in studies of ZMapp and other experimental treatments.
The neuroscientists achieved these new insights with the help of a clever experimental setup that involved a robot administering incognito touches: Study participants placed their forearm through a curtain where it was stroked by a controlled robot movement.
The experimental study required participants to respond to persuasive political policy statements such as «You should support stronger gun control laws,» «You should support deportation of illegal immigrants,» or «You should support same - sex marriage,» delivered with different pitched voices.
Well - controlled, experimental studies of the influence of microbial ecology, disinfectant type, pipe materials, and water age, on opportunistic pathogen occurrence and persistence are needed in order to establish their relationships to drug resistance.»
Overall, the study utilised rats at 7.5 — 8.5 weeks of age assigned to 5 different groups; sham control (PBS only), 3 - NP control (3 - NP) and 3 experimental cohorts — rats treated with 3 - NP and injected with iPSCs into the striatum after 7 days (3 - NP - iPSC - 7), 21 days (3 - NP - iPSC - 21) and 42 days (3 - NP - iPSC - 42).
So, when experimental animals are fed a special diet, the control animals should be fed a diet matched in every way to the special diet, except of course for the dietary variable that the researcher is studying.
At the 2013 Conference the winner of the 2011 Feynman Prize for Experimental work presents STM studies showing how the manipulation of single molecules on a surface can yield insights to their mechanical, electronic, and optical properties, and be used in a controlled way to build pre-defined molecular architectures.
The MMRRC is committed to upholding the highest standards of experimental design and quality control to optimize the reproducibility of research studies using mutant mice.
Let us formulate the experimental and matching control diets to meet your specific study needs.
A promising experimental compound prevents cholesterol gallstone disease in mice by stimulating the biochemical pathway that controls bile acid secretion by the liver, according to new studies by...
Her studies on ion collisions built a path for precise experimental control of ion deposition onto surfaces.
To date there have been no direct experimental studies of the potential responses of these animals in known, controlled conditions.
Across the subregions, GAD patients had increased connectivity with a previously characterized frontoparietal executive control network and decreased connectivity with an insula - and cingulate - based salience network.Our findings provide new insights into the functional neuroanatomy of the human amygdala and converge with connectivity studies in experimental animals.
Future studies should further improve methodological aspects and reporting related to both fMRI and acupuncture, and strictly control experimental conditions for more robust inference.
A very small number of previous studies suggest that the technique can be used to distinguish between truth and falsehood under controlled and highly contrived experimental conditions.
The expert review panel recommended one practice guideline based on a 2005 randomized trial that provided data to support a memory retraining protocol.12, 13 The trial enrolled 29 subjects with MS - related learning deficits and randomized them to either the control group (n = 14) or the experimental group (n = 15).13 Both groups participated in 8 «treatment» sessions, which consisted of nontraining memory tasks for the control group and the Story Memory Technique (SMT), which taught the skills of visualization and context to improve learning, for the experimental group.13 In subjects with moderately severe impairment, 88 % in the experimental group showed significant improvement in learning abilities compared with 38 % in the control group (P <.01).13 Subjects with mild impairment showed little improvement.13 On this basis, the technique used in this study was recommended by the review panel as a practice guideline for the rehabilitation of learning and memory in persons with MS. 12
In this review, we present a practical guide to help researchers design their first scRNA - seq studies, including introductory information on experimental hardware, protocol choice, quality control, data analysis and biological interpretation.
In a small experimental study, participants in an eight - week mindfulness - based stress reduction (MBSR) program — focusing on the breath, mental content and bodily sensations while walking, sitting or practising yoga — experienced notably smaller post-stress inflammatory responses than control subjects.
In recently published studies of ad libitum, low - carbohydrate diets, experimental and control subjects consumed diets in which neither fat content nor protein content were held constant between groups (5 — 7).
The small studies that the CDC cited under the «experiment» criteria in support of their contention that reducing sodium intake below current levels can reduce CVD risk are flawed by confounding factors such as excess weight in study subjects, substitution of potassium for sodium, and providing nutritional supplements to experimental subjects but not to controls.
One study involved 9 days of probiotic supplementation (Lactobacillus reuteri vs. control) prior to experimental colorectal distension in rats.