- Social desirability bias
+ Can explain questions fully, open questions
- Personality can affect the results
- Experimenter bias - interpretations
- Questionnaires are standardised so it isn't possible to explain any points in questions - misinterpretation. Solved by piloting the questions.
- Open questions can generate large amounts of data that take a long time to process and analyse. Could limit the space available so responses become concise.
- May answer superficially if it is too long to complete.
+ More objective than interviews. Relatively quicker to collect information using a questionnaire.
+ Information can be collected from a large portion of a group. Return rates are usually low but it can be improved if it's in a place where they have to give it back immediately (e.g. library)
- Correlational Analysis
+ Good for showing possible relationships between variables and are the only practical or ethical way of carrying out an investigation
- Can't establish cause and effect. E.g. if we found a positive correlation between GCSE scores and attendance we cant say one causes the other. Could be leading to it but other variables could be present.
+ It is easier to replicate because a standardised procedure is used
+ Allow for control over extraneous/independent variables - allows cause and effect to be established.
- Its artificial - unnatural behviour doens't reflect real life (ecological validity) Not possible to generalise the findings to a…