This post focuses on strengths and limitations of laboratory experiment, applied to the psychology and sociology… Laboratory experiments take place in controlled environments and are the main method used in the natural sciences such as Physics, Chemistry and Biology. There are numerous experiments which have been designed to test numerous scientific theories about the temperatures at which various substances freeze or melt, or how different chemicals react when they are combined under certain conditions.
The logic of the experimental method is that it is a controlled environment which enables the scientist to measure precisely the effects of independent variables on dependent variables, thus establishing cause and effect relationships Mealworm lab report. website for Order your sociology essay at! This research In need of quality sociology research paper writing services? This Journal is .
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For a general introduction to the key features of experiments and the experimental method (including key terms such as hypothesis and dependent and independent variables) and some of their advantages please see this post: experiments in sociology: an introduction. The laboratory experiment and is commonly used psychology, where experiments are used to measure the effects of sleep loss and alcohol on concentration and reaction time, as well as some more ethically dubious experiments designed to measure the effects of media violence on children and the responses of people to authority figures.
However, they are less common in sociology, so this post draws on the example of Milgram’s Obedience Experiment to illustrate the advantages and disadvantages of laboratory experiment in sociology. Milgram’s Obedience Experiment – A Brief SummaryAn ‘associate’ of Milgram’s being connected up to the shock machine. Milgram (1963) was interested in researching how far people would go in obeying an instruction if it involved harming another person.
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They drew straws to determine their roles – learner or teacher – although this was fixed and the confederate was always the learner.
There was also an “experimenter” dressed in a grey lab coat, played by an actor 7 Jun 2018 - Best websites to order a sociology lab report Oxford double spaced Need to purchase sociology lab report High School 150 pages..
Two rooms were used – one for the learner (with an electric chair) and another for the teacher and experimenter with an electric shock generator. The “learner” was strapped to a chair with electrodes. After he has learned a list of word pairs given him to learn, the “teacher” tests him by naming a word and asking the learner to recall its partner/pair from a list of four possible choices.
The teacher is told to administer an electric shock every time the learner makes a mistake, increasing the level of shock each time.
There were 30 switches on the shock generator marked from 15 volts (slight shock) to 450 (danger – severe shock) Best website to order an sociology laboratory report double spaced College How to purchase a sociology laboratory report Premium 1 hour double spaced..
The learner gave mainly wrong answers (on purpose) and for each of these the teacher gave him an electric shock. When the teacher refused to administer a shock the experimenter was to give a series of orders / prods to ensure they continued.
teachers) continued to the highest level of 450 volts.
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Obedience to authority is ingrained in us all from the way we are brought up. People tend to obey orders from other people if they recognize their authority as morally right and / or legally based.
This response to legitimate authority is learned in a variety of situations, for example in the family, school and workplace. See this post for a more detailed account of Milgram’s Obedience Experiment: https:// /2017/06/15/milgram-experiment-phsychology-evaluation/Advantages of Laboratory Experiments Accuracy and Precision– Laboratory experiments allow the precise effects of independent variables on dependent variables to be measured.
This in turn makes it possible to establish cause and effect relationships between variables 6 Jun 2018 - Where to order a sociology lab report 6 hours double spaced Need to purchase an sociology lab report University Academic US Letter Size .
Isolation of Variables – The controlled conditions of laboratory experiments allows researchers to isolate variables more effectively than with any other research method.
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With the ‘tomato experiment’ for example, laboratory conditions would allow the researcher to control precisely variations in temperature, moisture and light, this would not be possible in a field (no pun intended). Controlled conditions also allow the researchers to eliminate the effects of ‘extraneous variables’.
Extraneous variables are undesirable variables which are not of interest to the researcher but might interfere with the results of the experiment. If you were trying to measure the effects of alcohol on reaction time for example, keeping respondents in a lab means you could make sure they all at and drank similar things, and did similar things, in between drinking the alcohol (or placebo) and doing the reaction time test.
Laboratory experiments have excellent reliability for two major reasons:Firstly, the controlled environment means it easy to replicate the exact environmental conditions of the original experiment and this also means it is relatively easy for the researcher to clearly outline the exact stages of the experiment, again making exact replication easier Results 15 - 25 - A standard lab report or research paper should be formatted with sections. lives essay do my psychology lab reports and sociology project ideas, nov, Physics lab report writing guide space order expository essay i need a .
This is not necessarily the case in a field experiment, where extraneous variables may interfere with the research process in different ways with repeat-experiments.
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In an experiment, the researcher typically takes on the role of ‘expert’ and simply manipulates variables, trying to have as little interaction with the respondents as the experiment will allow for. This means there is little room for the researcher’s own values to influence the way the respondent reacts to an experiment.
In terms of practical advantages experiments (assuming they are ethical) are attractive to funding bodies because of their scientific, quantitative nature, and because science carries with it a certain prestige. Also, once the experiment is set up, if it takes place in a lab, researchers can conduct research like any other day-job – there is no travelling to visit respondents for example, everyone comes to the researcher.
Disadvantages with Laboratory Experiments Laboratory experiments lack external validity – sociologists hardly ever use lab experiments because the artificial environment of the laboratory is so far removed from real-life that most Sociologists agree that the results gained from such experiments tell us very little about how respondents would actually act in real life Through GALILEO, Georgia citizens have access to authoritative, subscription-only information that isn't available through free search engines. We report the .
Take the Milgram experiment for example – how likely is it that you will ever be asked by scientist to give electric shocks to someone you’ve never met and who you can’t see when they give the wrong answer to a question you’ve just read out? Moreover, when was they last time you were asked to do anything to anyone by a scientist? In the real world context, many of the Milgram respondents may have responded to real-world authority figure’s demands differently.
Laboratory experiments: definition, explanation, advantages and
This was the case in the Milgram experiment, where the research subjects thought the (invisible) person receiving the shocks was the actual subject rather than themselves. A second ethical problem concerns harm to respondents.
In the case of the original Milgram experiment, ‘many research participants were observed to sweat, stutter, tremble, bit their lips and dig their nails into their flesh, full-blown, uncontrollable seizures were observed for three subjects’. Practical problems include the fact that you cannot get many sociological subjects into the small scale setting of a laboratory setting. You can’t get a large group of people, or a subculture, or a community into a lab in order to observe how the interact with ‘independent variables’.
Also, the controlled nature of the experiment means you are likely to be researching one person at a time, rather than several people completing a questionnaire at once, so it may take a long time to get a large-sample.