Contents
How do you know if the results of a study are valid?
8 ways to determine the credibility of research reports
- Why was the study undertaken?
- Who conducted the study?
- Who funded the research?
- How was the data collected?
- Is the sample size and response rate sufficient?
- Does the research make use of secondary data?
- Does the research measure what it claims to measure?
What makes a study invalid?
“Findings can be said to be internally invalid because they may have been affected by factors other than those thought to have caused them, or because the interpretation of the data by the researcher is not clearly supportable” (Seliger & Shohamy 1989, 95).
What are threats to validity?
What are threats to internal validity? There are eight threats to internal validity: history, maturation, instrumentation, testing, selection bias, regression to the mean, social interaction and attrition.
How do you determine validity of information?
There are several main criteria for determining whether a source is reliable or not.
- 1) Accuracy. Verify the information you already know against the information found in the source.
- 2) Authority. Make sure the source is written by a trustworthy author and/or institution.
- 3) Currency.
- 4) Coverage.
How do you counter threats to external validity?
There are several ways to counter threats to external validity:
- Replications counter almost all threats by enhancing generalizability to other settings, populations and conditions.
- Field experiments counter testing and situation effects by using natural contexts.
What is valid evidence?
Valid Evidence – Any information or evidence considered to be relevant, valid and accurate by any person(s) reviewing a particular alleged violation shall be considered.
What causes poor external validity?
There are seven threats to external validity: selection bias, history, experimenter effect, Hawthorne effect, testing effect, aptitude-treatment and situation effect.