The Experimental Method And Experimental Research

As the psychology is a subject of science, experiment is important part of this subject. Before

3- How would you make it an experimental (rather than correlational) study (it might help to be specific here as well and define the two types of studies in your

Procedure: Using distilled water, premeasured containers and objects determine displacement of fluids and density of objects. Use ice and heat measure temperatures in Celsius, Fahrenheit and Kelvin.

There has been an ongoing debate on whether psychology is indeed scientific, although recent, psychology is now considered a science. This is because it uses scientific methodology in researching, devising treatments and measuring the outcomes. These methods include collecting and analysing data and concluding their findings in order to identify whether the research or treatment adequality solves the problem. Scientific studies must be replicable, this means the if repeated exactly the same, the results should produce an identical outcome. Replicability can be increased by ruling out any alternatives that may not have originally been thought of. Objectivity in science is the idea that scientist, in an attempt to get the best results, must first

In a laboratory study of sleep deprivation, researchers employed a variety of techniques to keep

Box 3.2: Why do it this way? is especially relevant, as it considers an important advantage of the experimental method. Chapter 6: No experiments are discussed in this chapter, however, the essay question requires you to discuss the value of experiments. Consider if there are certain aspects of human behaviour and/or performance that cannot be meaningfully investigated using experiments. What are the alternative methods of studying behaviour? Sections 2 and 3 of Chapter 6 are relevant in this respect.

The lesson that is perhaps the most important one we learned this week is the scientific method. The scientific method is not only used in particularly every subsection in science, but allows psychologists to test different ideas about behavior. Pastorino and Doyle-Portillo in the General Psychology textbook describes the scientific method as “ a set of rules for gathering and analyzing information that enables you to test an idea or hypothesis”. (8) All scientists adhere to these standard set of rules in order to be able to better analyze the data and share the results throughout the scientific community. The scientific method consists of a few distinct parts: allow for observation, make a prediction, form a hypothesis, choose a research method/ design an

3.     What are the advantages and disadvantages of an experimental design in an educational study?

Almost all human beings agree that everyone is different and that there is a need to experiment to better understand the differences within the human race. The role of scientific experiments in psychology is an attempt to better understand the mental process of humans and the possible discovery of something in human makeup that has not been noticed by past scientists and psychologists. Experiments can change the permanent thinking of psychologists and scientists. If one psychologist theorized an idea and every other generation agreed with that view, no one voicing an opposition to the idea, then psychologists would get nowhere in understanding the human mind, failing the innate purpose of psychology- to study and answer questions about actions, thoughts, and emotions. Thus, to fulfil the need of psychology, psychologists experiment and refer back to past psychologists for ways to expand.

- The use of a scientific control groups is important because it can segregate the effect of

Our country was founded on certain moral principles. The moral principles which guide our lives are referred to as ethics. These ethics have an impact on how we interact with the world around us and shape our personalities; this happens even if we do not realize their immediate impact. It is for this very reason that ethics in psychological research became necessary. “One may also define ethics as a method, procedure, or perspective for deciding how to act and for analyzing complex problems and issues” (Resnik, 2011). We are expected to behave or be treated a particular way in society, therefore we should be granted certain ethical treatments in regards to research.

Psychological research describes investigations psychologists undertake in order to review and analyse a specific hypothesis, (a theory about the relationship between defined variables). Research allows theories to be confirmed, amended or rejected and often leads to further research as requirements evolve. Psychological research can take many forms, from laboratory based experiments to non-invasive viewing of subjects in their own environment. This research can take place using human or non-human subjects and the analysed results applied to human behaviour or experience within many disciplines including, education, legal or occupational.

In Psychology 101 we learned that research methods are used in order to understand our mental and behavioral processes by making observations in a systematic way, following strict rules of evidence and thinking critically about that evidence. This scientific research is based on theories (tentative explanations of observations in science), hypotheses (predictions based on a theory) and replication (testing a hypothesis in more than one study). Some of the different research methods are firstly, descriptive studies. Descriptive studies are studies that use survey methods, naturalistic observation and clinical methods. Another research method is correlational studies. Correlational studies are studies that help one to determine if a relationship exists between two or more variables and if so it tells one how strongly those two variables relate to one another. With in correlational studies one can have positive correlation (as one variable increases or decreases so does the other), negative correlation (variables go in opposite directions) or zero correlation (no relationship between the variables). Another research method is formal experiments. Formal experiments are studies that allow us to draw conclusions about how one variable may cause or have an effect on another variable. With in formal experiments there are four elements, which are the independent variable (variable that is manipulated or controlled), the dependent variable (variable that is measured), the experimental

What I have learned about research is that it is a process, a scientific process that psychologist and scientist develop that includes many different approaches and that is carefully peer reviewed and evaluated. There is what is called the Scientific Approach where scientist have an idea or theory and based on their observation will either support the theory or the theory can be falsified by their peers. Data also goes through a review period before it is published in a scientific journal by scientist who have the knowledge and expertise to evaluate it.

Quantitative research design is the standard experimental method of most scientific disciplines. These experiments are sometimes referred to as true science, and use traditional mathematical and statistical means to measure results conclusively. They are most commonly used by physical scientists, although social sciences, education and economics have been known to use this type of research. It is the opposite of qualitative research. Quantitative experiments all use a standard format, with a few minor inter-disciplinary differences, of generating a hypothesis to be proved or disproved. This hypothesis must be provable by mathematical and statistical means, and is the basis around which the whole experiment is designed. Randomization of any study groups is essential, and a control group should be included, wherever possible. A sound quantitative design should only manipulate one variable at a time, or statistical analysis becomes cumbersome and open to question. Ideally, the research should be constructed in a manner that allows others to repeat the experiment and obtain similar results.