what is the difference between reliability and validity in what respects are they similar The real difference between reliability and validity is mostly a matter of definition. Reliability estimates the consistency of your measurement‚ or more simply the degree to which an instrument measures the same way each time it is used in under the same conditions with the same subjects. Validity‚ on the other hand‚ involves the degree to which you are measuring what you are supposed to‚ more simply‚ the
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There are 7 factors that affect the development of a child: growth‚ diet‚ love and affection‚ sleep‚ stimulation‚ environment and medical conditions and illness. I will discuss six of them below: - GROWTH - a major factor affecting a child’s physical (eg. growth of bones and muscles) and mental (eg. growth of the brain) development. It is responsible for many things which are usually taken for granted. There are many illnesses and disorders that can negatively affect growth and prevent children
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two aspects of validity‚ internal validity and external validity. Internal validity refers to an approximate truth about inferences regarding causal relationships. Internal validity is only necessary in circumstances where there is a need to establish a cause and effect relationship. External validity is closely related to generalizing‚ and the ability to generalize a particular study to other people and other situations. This short paper will discuss both internal and external validity‚ and the threats
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Investigating Factors that Affect the Strength of an Electromagnet Aim: To investigate the factors‚ which affect the strength of an electromagnet‚ also known as it’s‚ pick up power. Predictions: The more coils of wire used on the electromagnet then the greater number of paper clips picked up. Also The greater the current the greater the number of paper clips picked up. There will also be a limit to the amount of magnetism created and how many paper clips can be picked up
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State standardized tests are hard on teachers and students. The tests do not show if the student is learning throughout the year. Preparing and studying for the tests takes too much time. The tests cause stress on students‚ teachers‚ and parents. Objection: Standardized tests can be good for teachers and students in some ways. Standardized tests are difficult for teachers and students. Standardized tests do not evaluate the student’s growth over the year. The tests evaluate how well the student
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Lab Report Factors That Affect Enzymes Reaction Rate Name of lab: Effects of temperature‚ pH‚ Enzyme Concentration‚ and Substrate Concentration on Enzymatic Activity Introduction: Enzymes are the most important types of proteins‚ they act as catalysis (speed up chemical reactions). If enzymes didn’t exist‚ biochemical reactions would act to slowly and they couldn’t keep up with the metabolic functions. Enzymes have a three-dimensional structure that is really complex. This structure consists
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I strongly believed that languages were learned mainly through imitation. Unfortunately‚ after discussing this proposition with my classmates and teacher‚ we concluded that this statement was false. In my experience as a helper of teachers in ESL classes‚ I saw that‚ the Audio-lingual Method gave very positive results. On one hand‚ this method was designed to develop the ability of oral fluency in a second language in 9 months‚ which was also supported by a number of American linguists (Ellis R.
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Blanche Ely High School Abstract The researcher conducted this experiment in order to investigate how various factors effected enzymes. Those factors were the concentration of the enzyme‚ the temperature it had to work in‚ and the pH level of the solutions as well. All three were hypothesized to speed up the rate at which the enzyme acted. A series of several tests were carried out to find the answer to each problem. First‚ the scientist witnessed the enzyme diastase work in a natural
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the argument were addressed fairly by allowing each member a chance to present his or her argument for or against the creditability of the website. Ground rules were established and followed. The team made sure an inductive and deductive approached was taken when discussing the credibility and validity of Wikipedia. Each member agreed that Wikipedia is an excellent source for a quick reference. The information found
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Lesson Plan Title: Factors that Affect Rate of Dissolving and Solubility Overview‚ Expectations and Rationale 1. Big Ideas: • Properties of solutions can be described qualitatively and quantitatively‚ and can be predicted 2. Ministry Expectations: Scientific Investigation Skills and Career Exploration A1.1 - formulate relevant scientific questions about observed relationships‚ ideas‚ problems‚ or issues‚ make informed predictions‚ and/or formulate educated hypotheses to focus inquiries
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