The current discussion in psychology about the validity of research practices was sparked in 2011 by revelations that several prominent social psychologists fabricated their data. Required fields are marked *. To explain the importance of both reliability and validity I am going to write about the affect they have on the classification and diagnosis of depression. 1 Psychological assessment is an important part of both experimental research and clinical treatment. It is important since not all individuals will perceive and interpret the answers in the same way, hence the deemed accurateness of the answers will vary according to the person evaluating them. If your scale gives you a reasonably consistent reading every time you step on it, it is reliable. What is test re-test reliability? either written myself or outsourced but it looks like There, it measures the extent to which all parts of the test contribute equally to what is being measured. This is a specific type of reliability which, in this case, looks at whether two people would come to the same conclusion about an individual. Test-retest reliability is best used for things that are stable over time, such as intelligence. A study is considered to be reliable if it produces the same results repeatedly. This is done by comparing the results of one half of a test with the results from the other half. It’s important to consider reliability and validity when you are creating your research design, planning your methods, and writing up your results, especially in quantitative research. Studies have found that some cultures rely on showing lots of emotion like grieving, whereas others see it as a bad thing. It’s true that data would not be credited without reliability/validity, which I think in some cases is a shame, because, as in cases such as diagnosing depression, it can sometimes sway researchers away from the aim of their studies. If a study is reliable it can have positive implications for other areas of psychology and could be used to improve/aid issues. I’m glad you agree that reliability is important and I understand what you mean when you say we should assess both internal and external reliability. I have joined your rss feed and look forward to in quest of more of your excellent post. Reliability is about the consistency of a measure, and validity is about the accuracy of a measure. Although clinical researchers know that it is important to have valid measures, there is insufficient understanding of the role that reliability plays in correlative validity-the extent to which variables are capable of correlating with each other. Ok so I did some research as to why reliability is important within the field of psychology, mainly I got loads of definitions with regards to reliability so I came up with my own ideas. This replication involves repeating a research study under exactly the SAME CONDITIONS, using exactly the SAME PARTICIPANTS. In terms of depression as you have discussed I do believe that although it it very important for the diagnosis of depression to be consistent between both cases and the psychologists/psychiatrists diagnosing them. Not only can the conclusions of a professional provide a problem, but the information given by a patient can also pose a risk with reliability. Suspicions arose about Burt’s work and it was found that his results were fabricated and therefore unreliable. ( Log Out / Therefore I believe it is very important to assess each case as an individual and although past cases should be drawn upon when diagnosing, one should not assume that the current case would be the same as previous ones. Sub-cultures like gender provide the same problem. Finally, it is important to remember that reliability is not validity. Validity is a measure of how well a test measures what it claims to measure. present here at this website, thanks admin of this website. If this does happen, it can often make a person worse or even develop the disorder, when they never had it in the first place. But on the other hand, depression does after all need defining, like anything that is going to be assessed or measured in a person. Reliability indicates measurement precision, reflected in producing similar measurements on multiple occasions. Reliability refers to the ability to consistently produce a given result. The key aspects concerning the quality of scientific measures are reliability and validity. October 13, 2011. Reliability definition psychology refers to the ability of a research study or test to provide the same results after being performed on more than one occasion. Reliability is highly important for psychological research. no te conocía a partir de ahora. So, I feel that reliability is an important aspect of Psychology and Science and if misused it can have serious effects on society as a whole. ( Log Out / If reliability is misused it can have serious negative consequences. Wow, that’s what I was searching for, what a data! Those observing patients can often rely too much on a person’s medical history than what is right in front of them. Validity is also impiortant in Psychology because people have to know that the results were valid as well as reliable as they will have to trust the results that they are given as they may use the results to do experiments and they may go and check the results that have been done. Soon after this, attention was drawn to several failures to replicate important findings in the area of social cognition. At the same time that these fraud and replication issues became prominent, researchers began identifying problems with widely used methodological and statistical practices that might undermine the validity of research findin… Gracias por invitarme a escribir me ha encantado con tu artículo The term reliability, when it refers to psychological research, is focused on the consistency of a research study or measuring test. Information from patients is often unreliable due to problems with embarrassment, wanting to be likeable and so on. Think of it this way, if you are weighing something on different scales, you would expect to get essentially the same results every time. It is highly unlikely that both patients would be sharing the same experiences. Start studying Psychology - Validity, Reliability, Standardisation and Norms. I agree with you in that reliability and validity are both very important in all aspects of psychology. psue7b Says: October 4, 2011 at 8:53 pm. Reliability: Reliability means consistency. That way, people can test, replicate, generalise and develop your hard work. This type of reliability assumes that there will be no change in th… Reliability refers to a test’s ability to produce consistent results over time. This is because it tests if the study fulfills its predicted aims and hypothesis and also ensures that the results are due to the study and not any possible extraneous variables. The answer is that they conduct research using the measure to confirm that the scores make sense based on their understanding of th… Change ), You are commenting using your Facebook account. The hunt for something regarding this. It is more common for a woman to be diagnosed with depression if seen by a male clinician, than if she saw a female or if a male saw either clincian. For example, Ainsworth and Bell’s study on child attachments, ‘the strange situation’, was a reliable study because it received consistent results when re-conducted (children of certain attachments types were found to act in a way predicted of that attachment type). When doing research it is always important to focus on reliability and validity to ensure that your findings are valid and reliable. Filed under: Psychology - Research Skills and Methods — 4 Comments. 4 Tips That Will Help You Choose The Right Data Centre Provider | TechnoStuffs - The Technology Stuffs, Reliability in Research – Useful Information. Reliability and validity are important factors of psychological research studies. Reliability is important in the design of assessments because no assessment is truly perfect. They can however be misused or be inaccurate in certain cases. For example, psychodynamic theories such as the ideas of Sigmund Freud are difficult to test for reliability because they are often case studies and other forms of qualitative data. Witth havin so much content do you ever run into any problems of plagorism or copyright violation? A common problem related to this is the issue of culture. Reliability is the extent to which a test is repeatable and yields consistant scores.Plus, in order to be valid, a test must be reliable; but reliability does not guarantee validity. Do you know any solutions to help reduce content from being stolen? The diagnosis of depression has problems with validity because it can’t necessarily be generalised to every culture. When we talk about employees’ work ethic, we often focus on how to be more productive and efficient with our time and rarely discuss the importance of reliability in the workplace. For example, Cyril Burt conducted a study in which he fabricated the results in order to support his theory that intelligence is genetic. Presuming that everyone can be assessed using a single set of diagnoses is definitely a risk in my opinion , so those who mentioned it make a good point. Also, the reliability of this study extends worldwide and has become an accepted methodology worldwide. If the two halves of t… I really like this blog and it raises some valid points. I think both types of reliability are important to psychology and it can help to improve the quality of the research if both internal and external reliability can be achieved. I feel that in certain situations it is difficult to test for reliability. In order to ensure that all patients are diagnosed correctly, all clinicans need to have a clear idea based on reliable and valid evidence. An example often used for reliability and validity is that of weighing oneself on a scale. However, this is still not always easy as each patient may have different experience, making it harder to give diagnoses. A test can be split in half in several ways, e.g. If a study is reliable it can have positive implications for other areas of psychology and could be used to improve/aid issues. (not really sure that this is relevant to the reliability/validity side of your blog but still though it was worth mentioning!). Thanks for your comment :)! Bookmarked. ( Log Out / Think of reliability as consistency or repeatability in measurements. Not only do you want your measurements to be accurate (i.e., valid), you want to get the same answer every time you use an instrument to measure a variable. Again, measurement involves assigning scores to individuals so that they represent some characteristic of the individuals. Reliability is the ability to replicate a study and get similar results. 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