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Free research essays on topics related to: control group

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  • Hawthorne Studies - 418 words
    One of Elton Mayos major involvements in direct observation was in the famed Western Electric researches, conducted at the companys Hawthorne Plant near Chicago, which ran from 1927 to 1932. (80) The work of Mayo and his associates had been preceded by a series of experiments conducted by engineers at Western Electric concerning the effect of the degree of illumination on worker productivity. (81) In the first of these experiments, three departments were exposed to different levels of lighting. The results were inconsistent. In one department, output fluctuated with no direct relationship to the intensity of illumination. In the second department, output remained relatively stable over the p ...
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  • Aids And Society - 1,651 words
    The number of newborns infected by vertical transmission of the human immunodeficiency virus is increasing as the number of HIV-positive women increases within the United States. It is estimated that while seven thousand of the HIV-positive women become pregnant each year, between one thousand and two thousand of their newborns will be HIV-positive. The transmission of the human immunodeficiency virus from mother to child, the benefits of drugs intervention, and whether or not the HIV-screening process of pregnant women should remain voluntary or become mandatory are very serious issues that affect our society today. The HIV-virus has proven that it is not a disease to be taken lightly or ig ...
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  • Hurry Up - 1,150 words
    Hurry Up Long recognized as one of God's greatest gifts to mankind, Ganja truly can heal the earth. Unknown to many today, cannabis hemp was used worldwide in paper, fiber, lamp oil and nautical applications throughout the 19th century, constituting "possibly the largest agricultural and industrial businesses in America" (Herer 83). In the early part of the 1800s cannabis was the number one medicine in the US (83). It held that spot tightly, until it was nudged to second place by morphine in 1863, unseated again in 1901 by aspirin (83). Throughout its usage history, doctors did not consider the effects of cannabis to be habit forming, anti-social, or violent. As Herer explains, "Mary Jane" c ...
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  • Gun Control Misc - 952 words
    Do We Need Tougher Gun Control Laws? What does the sound of amendment mean? In its entirety it reads, "A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms, shall not be infringed." Does this confer an unqualified right to bear arms? Or is it a right conditioned by the clause preceding the statement of right? Does the militia refer to the pe9ople generally, or does it specifically relate to the organized ("well regulated") military bodies of state and national guards and the armed forces? Gun control is one of many major topics of debate on Capitol Hill these days, but does it get the due attention that it needs? Gun related ...
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  • Clinical Trials Information For Patients - 1,229 words
    Clinical Trials Information for Patients In cancer research, a clinical trial is an organized study conducted in people with cancer to answer specific questions about a new treatment or a new way of using a known treatment. Each study tries to increase medical knowledge and to find new and better ways to help cancer patients. Besides studying new anticancer drugs, clinical trials study new combinations of drugs already used in cancer treatment, new ways of giving treatment, and how changes in lifestyle can help cancer patients or prevent cancer from occurring. Other clinical trials compare the best known standard therapy with a newer therapy to see if one produces more cures and causes fewer ...
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  • Public Sphere - 1,701 words
    The mathematical definition of the twentieth century corresponds to a hundred year period with a strictly defined beginning and an end. However, the picture differs when we look at the issue in a critical perspective. For most historians and social scientists, our century is characterized by vast and rapid changes in social, economical and political institutions. This analysis holds a large amount of validity even when the empirical data of a personal life experience is used. Therefore, the constraints for the definition of this era shall be closely related to institutional changes. At this point two major events turn out to be the "yardsticks" for a proper periodical limitation. The first o ...
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  • Propofol Vs Thiopental - 2,452 words
    Neuromuscular blocking agents are an essential aspect of attaining adequate muscle relaxation in patients prior to attempting endotracheal intubation. Succinylcholine is one these agents used, most commonly when attempting a rapid sequence induction. Succinylcholine administration is associated with muscle fasciculations and subsequent myalgias postoperatively. A nondepolarizing neuromuscular agent is commonly administered to reduce the occurance of fasciculations and myalgias. Additionally, the induction agent Propofol, has been associated with further reducing fasciculations and myalgias. Propofol and Pentothol are commonly used anesthetic agents and are generally interchangable and equall ...
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  • Bibliotherapy - 404 words
    Children's Literature as a Resource for Classroom GuidanceBibliotherapy is defined as a process or activity designed to help individuals solve problems or better understand themselves through their response to literature or media (Bodart, 1980). It consists of reading, viewing, or hearing of material, followed by a discussion led by a facilitator. The therapy takes place during this dynamic interaction between the reader and literature.During the last 20 years, researchers and practitioners from the fields of counseling and library science have contributed valuable resources related to bibliotherapy. These resources suggest that bibliotherapy is a valuable tool for use with elementary school ...
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  • Tv Violence - 1,292 words
    A major topic of conversation nowadays is whether or not voilence on television causes children to bahave more violently. Shortly after I began to research this topic, I realized that it is not a clear cut issue. Evidence can be easily found to support each position. In the following essay I will examine the different positions that can ba taken on this topic and try ro form my own view on the affect violent TV has on chidren. The first position I will examine is the one in which it is believed that, without a doubt, violent TV increases the likelyhood that a child will behave in a violent manner. This stands is examined in the Maclean's article intitled, "Power to the people. Television's t ...
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  • Abstracts - 3,618 words
    ... STRACTS UPDATED4/may/99 (Contact David Washburn for reprints and related publications) Supported by grants from NASA, NICHD, ARI, ARO, ONR, USAF Washburn, D. A., & Putney, R. T. (1999, June). Attention Profiles of Working Memory. Paper at the meeting of the American Psychological Society. Although each construct has its own literature, phenomena, and theories, it is widely recognized that attention and working memory are integrally related. Individual differences in serial probe recognition performance were profiled across basic dimensions of attention. Good working memory tended to be associated with good concentration, scanning, and attention-control skills. Washburn, D. A., & Putney, ...
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  • Yy - 312 words
    An experiment allows the researcher to control the situation being studied. Instead of being a passive recorder of what is going on, the researcher actively does something that he or she thinks will affect the subjects behavior and then observes what happens. These procedures allow the experimenter to draw conclusions about cause and effect. The aspect of an experiment situation manipulated or varied by the researcher is known as the independent variable. The reaction of the behavior that the researcher tries to predict- is the dependent variable. Every experiment has at least one independent and one dependent variable. Everything about the experimental situation expects the independent vari ...
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  • Childhood Onset Bipolar Disorder - 1,453 words
    Childhood Onset Bipolar Disorder (COBPD) is one of the most debilitating mental disorders affecting children today. Bipolar Disorder is a mood disorder usually affecting adults that causes sometimes severe changes in mood. Childhood Onset Bipolar disorder is just what it sounds like, a bipolar disorder that occurs during childhood. Persons suffering from a bipolar disorder experience mood swings ranging from depression to mania. During a depressive episode patients can experience feelings of extreme hopelessness or sadness, inability to concentrate and trouble sleeping. Symptoms of mania include rapidly changing ideas, exaggerated cheerfulness and excessive physical activity. Hypomanic sympt ...
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  • Behavioral Cognitive Theories - 2,303 words
    There were several predominant theorists in the cognitive behavioral meta-theory. Each theorist came to their conclusions, were received, and added to therapeutic skills in different ways. Their biographical history allows for a better understanding of how they came upon their conclusions. Their theories add to the understanding of human nature. Their critics expose flaws or oversights in the theories. The techniques used in the action stage of therapy today all have some historical roots in these theories and the theories of others. The overall goal being to focus on making changes in behaviors, thoughts, and feelings while continuing to explore feelings and examine values, priorities, barr ...
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  • Cognitive Effects Of Radiation - 1,115 words
    There have been many terrible consequences of the Chernobyl accident, the worst of which has been the suffering and death of millions of Ukrainian people due to radiation exposure. The Physical deterioration of the residents exposed to high amounts of radiation has been extensive and severe, with the rates of cancer and other diseases shooting up by the hundreds of percents. Out of the 100,000 citizens relocated from the Chernobyl plant and the city of Pypiat, Heart and Blood disease has gone up 938% from .74/1000 to 6.94/1000, Endocrine, Digestive and Immunity disease has risen 1350% from 12.67/1000 to 171.11/1000, Respiratory disease has risen 577% from 23.67/1000 to 138.68/1000, and Nervo ...
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  • Religion - 1,759 words
    CLAIM FOUR: "Marijuana causes long-term changes in the brain similar to those seen with other drugs of abuse . . ." Back in the 1970s, animal experiments led to groundless fears that marijuana blew holes in brain tissue. The experiments organisations like NIDA now fund are more sophisticated but the controversy still rages. George Koob, an addiction researcher from The Scripps Research Institute in La Jolla, California, claims the new message from the animals is simple: "The more we discover about the neurobiology of addiction the more common elements we're seeing between THC (tetrahydrocannabinol, the main active ingredient in cannabis) and other drugs of abuse." And for Koob, one of these ...
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  • Religion - 1,759 words
    CLAIM FOUR: "Marijuana causes long-term changes in the brain similar to those seen with other drugs of abuse . . ." Back in the 1970s, animal experiments led to groundless fears that marijuana blew holes in brain tissue. The experiments organisations like NIDA now fund are more sophisticated but the controversy still rages. George Koob, an addiction researcher from The Scripps Research Institute in La Jolla, California, claims the new message from the animals is simple: "The more we discover about the neurobiology of addiction the more common elements we're seeing between THC (tetrahydrocannabinol, the main active ingredient in cannabis) and other drugs of abuse." And for Koob, one of these ...
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  • Alterations In Feeding Behaviour - 1,470 words
    ... dala (See Table.1). However the main independent variable is of reproductive status. This has 4 levels: (1) 6 weeks of age or younger (therefore not sexually mature) (2) 4 months and above (undergoing usual reproductive cycles) The dependant variable differs within each experiment with consideration of the behaviour under inspection. The variable concerning the reproductive aspect of the rats is based on the following specifics:  Rats reach sexual maturity at 5 weeks of age  Females of breeding age come into heat every 4-5 days.  Female rats don't come into heat if they are pregnant or nursing.  The best time to breed a female is after 4 months of age.  ...
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  • None Provided - 999 words
    The Effects of Various Wavelengths on Photosynthetic Rate Photosynthesis is the process by which autotrophic organisms convert light energy to chemical energy in the form of glucose [1]. Without this process life on earth would be very different because every organism directly or indirectly depends on photosynthesis. Because plants are at the bottom of the food chain they must create their own energy; this is done through photosynthesis. Various pigments located through out the leaves and stems of plants called chlorophylls absorb wavelengths from sunlight. They absorb all wavelengths of natural light (400-700 nanometers), except those between 525-550 nm which are reflected giving plants the ...
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  • Agent Orange - 689 words
    Diabetes Strongly Associated With Vietnam Exposure to Pesticide U.S. Air Force planes spray the defoliant chemical Agent Orange over dense vegetation in South Vietnam in this 1966 photo. Dioxin is the component of Agent Orange linked to many health effects in laboratory animals. (AP Photo) W A S H I N G T O N, March 29 An Air Force study released today confirmed a connection, long suspected by Vietnam veterans, between wartime exposure to the herbicide Agent Orange and diabetes. The Air Force said the link so far is only statistical and is yet to be proven conclusively by biological study. The National Academy of Sciences, a research arm of the government, is reviewing the results and is to ...
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  • Violence Depicted In The Media - 1,160 words
    There is endless controversy today concerning society being highly affected by media programs displaying violence. The National Association for the Education of Young Children (NAEYC) reports that violence in the media has increased since 1980 and continues to increase. Thousands of studies have pointed to a relationship between media violence and real life crime. Years of research show that exposure to media violence causes children to behave more aggressively, both immediately and in their adult years. This aggressiveness has lead violent acts in the past. These events could have been avoided if violence was not viewed on television. The Charter of Rights and Freedoms guarantees the freedo ...
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