When you do quantitative research, you have to consider the reliability and validity of your research methods and instruments of measurement reliability tells you how consistently a method measures something. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. They help to ensure that an experiment is credible and can be used in psychology. Reliability is a major concern when a psychological test is used to measure some attribute or behaviour. This 24 slide powerpoint focuses on the reliability of sources both primary and secondary and is totally interactive for your students. Although the guiding principle should be the specific purposes of the research, there.
Ebeling is one of the bestselling textbook for the introductory reliability and maintenance engineering course students in the united states, canada, uk, australia and other european. Reliability and validity introduction for every dimension of interest and specific question or set of questions, there are a vast number of ways to make questions. The 4 types of reliability definitions, examples, methods. It is vital for a test to be valid in order for the results to be accurately applied and interpreted. In the previous chapter, we discussed and elaborated on the process of tool construction. Validity is harder to assess, but it can be estimated by comparing the results to other relevant data or theory. Reliability is the ability of a test or assessment to yield the same results when administered repeatedly. Reliability analysis of three configurations of twin. Standards for reliability if a test is used only in group research or is used as a part of a composite e. Download free powerpoint themes and powerpoint backgrounds for your presentations. Methods of estimating reliability and validity are usually split up into different types. The concepts of reliability and validity explained with examples. Reliability vs validity in research differences, types.
Reliability vs validity reliability has to do with the quality of measurement. Students will work in pairs to create a powerpoint presentation on a topic dealing with reliability or validity. Reliability is the consistency or repeatability of measures. Validity and reliability of psychological test mylene t. The welfare of the people is very important, not only physically, but mentally too. Reliability can be estimated by comparing different versions of the same measurement. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Relationship between reliability and validity a valid test is generally reliable. Reliability theory and practice igor bazovsky dover publications, inc. Reliability and validity in measurement and research validity and reliability validity. Reliability refers to the consistency of scores obtained by the same individuals when re examined with test on different occasions, or with different sets of equivalent items, or under other variable.
View notes validity and reliability ppt from psychology psychua 1 at new york university. Validity is the extent to which a test measures what it claims to measure. It explains the differences between eye witness accounts, diaries, newspaper articles, internet sites, magazines, and tabloids. However, tests can be highly reliable and still not be valid for a particular purpose. In terms of accuracy and precision, reliability is analogous to precision, while validity is analogous to accuracy. It would be hard to trust the results of a test that yields. Psychology powerpoint templates w psychologythemed. For example, a weight scale can be judged reliable if measures for a 25pound weight do not vary over time or change for subsequent weightings. A test which is not valid, may not be reliable a test which is reliable may or may not be valid a high degree of reliability does not necessarily lead to high validity.
By creating an account i agree to poweredtemplates terms and conditions. This contains all of the essential content of the topic. Start a free trial of quizlet plus by thanksgiving. Download and save the introduction to psychology powerpoint. Winner of the standing ovation award for best powerpoint templates from presentations magazine. Of the previous efforts done by great educators a humble presentation by dr tarek tawfik amin 2. If so, share your ppt presentation slides online with. By downloading abstract templates for powerpoint you have the chance to access some of our free awesome powerpoint. Something is invalid when it is not appropriate to the task, e. Drawing conclusions a schoolboy designed an experiment to show that spiders hear with their. Abstract background for powerpoint makes you possible to create amazing powerpoint presentations to impress your audience.
The results of psychological investigations are said to be reliable if they are similar each time they are carried out using the same design, procedures and measurements. Reliability is important to make sure something can be replicated and that the findings will be the same if the experiment was done again. The concepts of reliability and validity explained with. Reliability and validity testing is the property of its rightful owner. A valid measurement implies a certain degree of reliability, but not vice versa. Reliability and validity in measurement and research. Balgobin, melissa ap psychology powerpoint presentations. The main purpose of any tool is to obtain data which is reliable and valid so the researcher can read the prevalent situation accurately and arrive at some conclusions to offer some suggestions. How well does the measure or design do what it purports to do. Problems of reliability and validity in ethnographic research.
Learn reliability psychology with free interactive flashcards. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Career psychology, social psychology, community, brain. Download the best free powerpoint templates to create modern presentations. Hello fellow students, an introduction to reliability and maintainability engineering book by charles e. Make everybody put their trust in your psychology center with an effective presentation, and theres no better help than this new template. Reliability refers to the consistency of a measure. Validity and reliability in assessment this work is the summarizations. Free powerpoint templates download free powerpoint backgrounds and powerpoint slides on psychology free idea powerpoint template this free presentation template can be used to make presentations on idea generation, consciousness, brainstorming sessions or to be used as part of a business project. Ppt psychological testing powerpoint presentation free.
Unfortunately, it is impossible to calculate reliability exactly, but it can be estimated in a. I have made money from other survey sites but made double or triple with for the same time and effort. Also has a notes sheet that the students complete as we work through the powerpoint. Reliability refers to the extent to which a test or other instrument is consistent in its measures. Thousands of ppt templates easy to edit with highquality slides, created by top designers around the world.
Best powerpoint templates download your favorites today. Validity and reliability chapter four chapter objectives define validity and reliability understand the purpose for needing valid and reliable measures know the most utilized and important types of validity seen in special education assessment know the most utilized and important types of reliability seen in special education assessment validity denotes the extent to which an instrument. Reliability guarantees an acceptable level of measurement error, while validity indicates that the measure assess the concept it is supposed to assess. Table of contents 1 the concept of reliability 1 the meaning of reliability in engineering. Testretest reliability coefficients, also known as coefficients of stability, index the effects of random response error and transient error on observed. Each free presentation is unique, which is why there are so many uniquely designed presentation templates to express each persons creativity and style. Lisa tyler added validity and reliability powerpoint to to do board unit 41 clinical psychology. Choose from 500 different sets of reliability psychology flashcards on quizlet. Reliability is a prerequisite for validity and refers to the ability of a test to measure a particular trait or skill consistently. Subscribe to email updates from tutor2u psychology. Reliability psychology research methods full lesson. A test is considered reliable if we get the same result repeatedly. The importance of reliability and validity in psychology. For example, if a test is designed to measure a trait such as introversion, then each time the test is administered to a subject, the results should be approximately the same.
Download free abstract powerpoint templates from this site, including vectorized powerpoint backgrounds, circles, special effects and cubes. Reliability and validity are both very important in psychology. Validity and reliability powerpoint on unit 41 clinical. Your objective is to teach the class about your reliability and validity topics. It has lots of exam questions as well throughout it. Reliability is a measure of whether something stays the same, i. Problems of reliability and validity in ethnographic research margaret d. Crocker and algina 1986, page 217 demonstrate the difference between reliability and validity with the following analogy. Cohens kappa testretest reliability equivalentforms reliability reliability as internal consistency interrater reliability questionnaire 1 item 1 item 2 item 3 t questionnaire 1 item 1 item 2 item 3 questionnaire 2 item 1 item 2 item 3 validity the extent to which a measured variable actually measures the conceptual variable that is, the. Lecompte houston independent school district and judith preissle goetz university of georgia although problems of reliability and validity have been explored thoroughly by experimenters and other quantitative researchers, their treatment by eth. This includes a powerpoint covering ways of ensuring reliability test retest and inter rater.
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