1. What is external validity? a. External validity is the extent to which findings may be generalized. (Page 292) 2. Why should a researcher be concerned about generalizing to other populations? a. Researchers should be concerned about generalizing to other populations‚ because if their research is not generalizable then their findings will be limited to only one population and will not have a far-reaching effect. (Page 292) 3. How can the fact that most studies are conducted with college students
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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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Internal validity - means that the conclusion which comes from an experiment is valid for the respondents who participated in the experiment. For any experimental design‚ we always require interval validity‚ without which experimental results are not interpretable. Threats to Internal Validity Selection - Subjects bring with them into the investigation unique characteristics‚ some learned and some inherent. Examples include sex‚ height‚ weight‚ color‚ attitude‚ personality‚ motor
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Validity is about the extent to which a piece of research in finding out what the research is finding out what the researcher intents to find out. The idea of validity means that something is true and can be believed. When people say ‘that’s a valid point”‚ they mean that the point is relevant‚ meaningful and believable. It is concerned with truth and value‚ that is whether conclusions are correct or not. It also considers whether the method‚ approaches and techniques actually relate to what is being
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outcome (increased class participation). Validity is in four types and these are: Conclusion‚ Construct‚ Internal and external validity. Conclusion validity tries to find out the relationship between a program and the observed outcome. For instance‚ a connection between Re-entry policy and increased failure rate in schools. Construct validity looks at the extent to which a test measures what it claims or intend to measure. Internal validity refers to how well an experiment has been done and the extent
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Reliability and validity are essential in terms of observation and measurement as it relates to human services research. In order to ensure this particular research has legitimacy it is vital that testing and research is consistent and specific. This paper will define and describe the types of reliability and validity and provide examples of each as it relates to human services research. It will also provide examples of how data collection methods and instruments are used in relation to human services
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to Parahoo (2006)‚ in quantitative studies reliability and validity are two of the most important concept used by researcher to evaluate the quality of the study that is carried out. Reliability and validity in research refer specifically to the measurement of data as they will be used to answer the research question. In most cases‚ the instrument that measures the variable is the central issues in determining the reliability and validity of the data. Whatever data collection method is used‚ the intent
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Reliability and Validity are important aspects of research in the human services field. Without reliability and validity researchers results would be useless. This paper will define the types of reliability and validity and give examples of each. Examples of a data collection method and data collection instruments used in human services and managerial research will be given. This paper will look into why it is important to ensure that these data collection methods and instruments are both reliable
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Reliability and Validity Researchers tend to be peculiar with how they conduct their study and which study method they choose to implement on their subjects. When various tools are examined for measure in behavioral research‚ researchers tend to prefer high validity and reliability (Rosnow & Rosenthal‚ 2008). To understand this concept‚ one must comprehend the meaning and the difference between reliability and validity and how this applies to human services research. Without the full knowledge
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Reliability and Validity Reliability and validity are important with any kind of research. Without them research and their results would be useless. This paper will define the types of reliability and validity as well as give examples of each. Both the data collection methods and the data collection instruments used in human services research will also be given. This paper will also look into why it is important to ensure that data collection methods as well as the instruments are reliable and
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