Research methods Flashcards
(24 cards)
What is a pilot study and what can it help with? (2)
- Pilot study refers to small-scale investigations taken before the study
- Useful to identify issues in methodology
How do you conduct a conduct analysis? (4)
- Identify key/recurrent themes
- Give an example of a possible theme
- Work through data (questionnaires, interviews)
- Tally the occurrences of each theme
Two ways of assessing reliability
- Test-retest (repeat test at different times)
- Inter-rater (have second researcher)
Inter-rater reliability step-by-step (4)
- Have a second researcher working on a study
- Forms separate content analysis
- Find a correlation between both tallies
- Accepted when correlation >0.8
What does significant at the p<0.05 level mean? (2)
- The difference is significant at 0.05 level
- So there is a less than 5% chance of the results being down to chance
Ordinal data
Artificial order, numbered (happiness scale)
Interval data
Temperature
Nominal data
Qualitative categories (eye colour)
Pneumonic for remembering statistical tests
Space weather readily contains many UFOs chasing space pigs
What is the abstract?
Brief summary (150 words) of aims, results, conclusions etc of study
What are the two types of sampling in observations?
1.Event sampling (note every event)
2. Time sampling (sample at specific intervals)
How would you obtain a stratified sample? (4)
- Identify the sub-groups
- Determine relative proportions for each group
- Using a random number generator
- Select a random sample from each group
If the mean, median and mode is the same, what does this tell you about the distribution?
Normal distribution
If the mean is less than the mode the graph is…
Negatively skewed
If the mean is higher than the mode the graph is…
Postively skewed
What situation would you use a scattergram in?
Relationship between two variables
What is a type I error?
Incorrectly rejecting a null hypothesis
The researcher has falsely claimed a relationship between the variables
What is a type II error?
Accepting the null hypothesis when it is false
Here, the effect exists, but is thought not to be
Why should research be replicated?
- Effects found in one study are much more likely to be reliable if they are replicated in another study
This can be referred to as increasing external validity
What is the abstract?
- Short summary of experiment, including methodology and findings
- 150 words
Where is raw data stored in a report?
Appendix
What is the discussion used for?
- Translating data into pyschological effects/principles
- Asesses strengths and flaws of experiment
- implications and possible further studies can be stated
What is peer review and why is it used?
- Research judged by independent experts to check quality and see if it should be published
- Ensures research is valid and trustable
What is the abstract?
- Short summary of experiment, inlcluding methodology and findings