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Topic about correlational research
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In order to judge the differences between the correlational and experimental research first you need to know what they are. I will take you thru both correlational and experimental research before comparing the two.
Correlational research- As the name sounds, the scholar looks to establish the relations between the two variables. In correlational research, there is little to no attempt made by the examiner to force the variables. The whole purpose of using correlations in research is to figure out which variables are connected. (Devin Kowalczyk). The examiner will record the values of the different variables and then will try and see if there is a joining with the variables as when an examiner records values of blood pressure and cholesterol
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Experimental research is what a lot of people think of a being more scientific. Its in our nature to unconsciously want to find out what occurs to us when changes are offered in variables. As in the example provided above about blood pressure and cholesterol levels, a research can deliberately increase the blood pressure of a subject and then take down his or hers cholesterol levels to see if there is any changes in his or her blood pressure. If changes happen in one variable lead to changes in another variable, a examiner is in place to say there is a something happening between the two.
The distinction between correlational and experimental research is. It is experimental research that can make a causal relationship between variables. Correlational research there is no effort whatsoever made by the examiner to influence the variables. The examiner merely reports the values of the variables and then tries to create relationship between the two. Correlational research can establish a correlation between two variables without stating causal relationship. So, even though scientists know that in most cases of medical depression people have been discovered with low levels of neurotransmitters like serotonin and epinephrine, they do not make a fundamental association that low levels of neurotransmitters are blamable for depression in
...l and emotional signals can be influenced at several different levels in the brain, by a myriad of chemicals. The sole cause of depression seems to be the simultaneous breakdown of neurochemical pathways across the nervous systems. It is true that treating depression in all of its forms is much easier today with the advent of new antidepressants, but these drugs are correcting a neurochemical imbalance which is not specific to depression. There may exist and someday be discovered a particular mood regulation flaw which is responsible for depression, but given the research presented today, I would say there is not.
The scientific method is how psychologists gain knowledge about the mind and behavior. It is used by all scientists. The experimental method is the one way to engage the scientific method, and the only way to find a cause and effect in relationships. It is summarized in five steps, observing some phenomenon in the world, forming a hypothesis which is an educated prediction about relationships between two or more variables, examining the gathered information by using empirical research, determining what the results are and drawing them, and evaluating the results whether it will support the hypothesis or not. Researchers, at the end, submit their work for publication for all to see and read (King, 2016). There are three types of psychological research in the scientific method, descriptive research, correlation, and experimental research (King, 2016). The article The Effects of Negative Body Talk in an Ethnically Diverse Sample of College Students (Katrevich, Register, & Aruguete, 2014) is an example of the experimental method.
Research is defined as systematic investigation in order to establish facts and reach new conclusions (OUP, 2014). The biopsychosocial model has already been described.
After reading “The Wire Mother Experiment” article, the two main research methods I can identify are observation and experimental methods. The strengths of the experimental method Harlow carried out are they are accurate and possess internal validity, due to the fact that they were carried out in a controlled environment. The lab...
Scientific method refers to a group of steps that investigates events, that helps gain new knowledge. Scientist use scientific method all around the world. It made an impact on human history. The method created new discoveries and inventions that changed the whole world for the better. Examples of new discoveries and inventions are medicine, technology and lastly the printing press.
...epressant drugs are required to relieve symptoms. Many antidepressants work by raising levels of monoamine neurotransmitters in the synapse. TCA’s, SSRI’s and SNRI’s are equally successful in depressive patients however differ in terms of their side effects. Due to advantages in pharmacological treatment and minimum variation in antidepressant efficiency, the choice of medication available to depression patients remains a choice in accordance to the patient’s characteristics and which treatment is deemed safe with less severe side effects. Antidepressants used today inhibit the role of serotonin and norepinephrine transporters, therefore preventing reuptake of targeted neurotransmitters. Although TCA’s are much cheaper to administer to patients, the overall rate of patients running depression-free is significantly lower than those patients who are prescribed SSRI’s.
The scientific method is the analyzation of evidence, to examine a case from every angle possible, to not give up on an investigation until all of the angles are covered and to not allow personal emotions create a bias in their mind (Osterburg 2010). A scientific method example would be when an investigator arrives to a crime scene, they would first search the area for clues and see if something doesn’t seem right. Next they would have to search for different forms of evidence, most important would be trace evidence because it can provide DNA evidence which can also link a suspect to the crime. There are many more ways evidence and other clues can be harvested from a crime scene but it is up to the investigator to use their knowledge and help find the person responsible for the crime
A correlational method measure relationship between two or more variables: independent variable(s) and dependent variable. The independent variables are the experimental factors that the researcher can manipulate, while dependent variables are the things that the experimenter no control over, that include the outcome of the experiment (Class notes). The experimental method explores cause and effect of the study (David G. Myers, 2008).
Experimental designs are viewed as the most accurate, and most demanding of research designs, requiring strict attention to rules and procedures. Researchers use these research designs to manipulate and control testing procedures as a way to understand a cause and effect relationship. Commonly, independent variables are manipulated to judge or decide their effect on a dependent variable (Trochim & Donnelly, 2008).
Clinical trial is biomedical or health related research studies in human being that follow a pre-defined protocol. Research is an activity designed to test a hypothesis that helps in concluding and developing knowledge. It is a protocol that has an objectives and procedures to reach those objectives (1). There are two types of clinical studies. One is interventional studies in which the research subjects are assigned by the investigator to a treatment or other intervention, and their outcomes are measured. Second is an observational study in which individuals are observed and their outcomes are measured by the investigators.
There are hypotheses or questions that the researcher wants to address which includes predictions about the possible relationship between two they are investigating (variables). However, in order to find answers to these questions, the researcher will have different instruments and materials, paper/complete tests and observation
The first method to be discussed and analysed are experimental methods. There is a variety of experimental methods including; laboratory, field and natural experiments. These methods are the most scientific method due to them being highly objective and systematic. In addition, this method is regarded as the most powerful research method used in psychology because of the potential to investigate the causes of events and therefore, identifying the cause and effect relationship. When carrying out an experiment the researcher intervenes directly in the situation being investigated. The researcher manipulates an independent variable (IV) in order to investigate whether there is a change in the dependent variable (DV). Any other variables that could have an
Neurotransmitters are substances that allow the brain cells to communicate with each other. Serotonin and norepinephrine are the two most common forms of neurotransmitters. Too little serotonin mat cause many symptoms of depression including irritability, sleep loss, and anxiety. Too little norepinephrine may be responsible for fatigue and a sense of hopelessness. A person's genetic structure, environment, and personality are all factors that affect the balance of these chemicals.
Research is systematic way to find out facts and knowledge as Kothari (2006) has analyzed that research is the pursuit of truth with the help of study, observation, comparison and experiment; the search for knowledge through objective and systematic method of finding solutions to a problem. However there are two types of researches one is by Purpose and other is by method. The type by purpose falls into three categorize such as Basic, Applied and Action Research.
On the other hand, quantitative research allows you to test hypothesis derived from theories, associated with the issues being investigated. It is less flexible, as there are standardized procedures and techniques for collecting, organizing and analyzing the data (Kuada, 2012).