1 Research Methods Flashcards
What is a laboratory experiment?
A scientific method that involves testing hypotheses by creating controlled conditions in a laboratory setting
What is a field experiment?
A scientific study that is conducted outside of a controlled laboratory setting, in a real world environment.
What is a quasi experiment?
Quasi experiment contain a naturally occurring IV, for example, a memory task with a group of clinically depressed people vs non depressed.
Lab experiment advantages?
- very reliable as they are easily replicable due to the controlled nature.
- has the ability to establish cause and effect
Disadvantages of lab experiment?
- low ecological validity because they are conducted in an artificial study that does not reflect a real life setting.
Field experiment advantages?
Higher ecological validity as behaviour occurs in its own natural environment.
Field experiment disadvantages?
More difficult to replicate exactly as there are no controls
Advantage of quasi experiment?
Useful when it is unethical to manipulate the IV like the experiment with the memory test with depressed and non depressed people, it is unethical to control their mental health.
Disadvantage of quasi experiment
Confounding variables are more likely = less reliable.
What are confounding variables?
Variables other than the independent variable that may affect results.
What is a structured observation?
In which an event or series of events is observed in its natural setting and recorded by an independent researcher.
Advantages and disadvantages of a structured observation?
+ likely to produce quantitative which makes it easier to analyse and compare.
+smaller risk of observer bias
- results aren’t as in depth and detailed.
- some behaviours the researcher records may not be important.
What is an unstructured observation?
When an observation is to take place without the pre defined plan and characteristics in advance.
Advantages and disadvantages of unstructured observations
+ more detailed results
- may be a greater risk of observer bias no behavioural categories)
- produces qualitative data which is more difficult to analyse.
What is a naturalistic observation?
Involves observing subjects in their natural environment
Advantages and disadvantages of naturalistic observations
+ ecological validity - behaviour is natural so there are no demand characteristics
+ can be a useful way of developing ideas about behaviour that could be tested in more controlled conditions.
- extraneous variables
- ethics - should only conduct observations where people expect to be observed by strangers. Debriefing is difficult, getting informed consent can be tricky.
What is a controlled observation?
A research method where researchers watch participants in a contained environment such as a laboratory
Advantages and disadvantages of a controlled observation
+ more accurate observations
+ easier to replicate - reliable
- low ecological validity
- demand characteristics
What is a participant observation
A research method where the researchers watch participants immerses themself in a particular social setting or group, observing the behaviours, interactions and practices of the participants.
Advantages and disadvantages of participant observations
+ high ecological validity
+ rich qualitative data can be obtained.
- observer may become too emotionally involved - too subjective
- cause and effect cannot be inferred.
What is a non participant observation
Involved observing participants without actively participating.
Advantages and disadvantages of non participant observations
+ observer may be more objective
+ observer can record observations as they occur - more reliable in terms of memory
- actual meaning of the behaviour may not be clear from a distance
- relationship is not formed between the observer and observee - may be less trust.
What is an overt observation?
Where those being observed are aware of the fact.
What is covert observation?
Where the researcher goes “undercover”, the participants are unaware that they are being observed.
What is a questionnaire?
A list of questions or items used to gather data from respondents about their attitudes or opinions
Advantages and disadvantages of questionnaires
+ large amount of data can be collected quickly and easily
+ since they can be done anonymously, responses are more likely to be honest.
- questionnaires may be flawed if some questions are leading
- social desirability issues may arise where participants give incorrect responses to try to put themselves in a socially acceptable light.
What are interviews?
Self report techniques that involve experimenter asking participants questions
Advantages and disadvantages of interviews
+detailed, qualitative information can be obtained
+ unstructured interviews may encourage the participant to be more honest with their answers
- more time consuming than a questionnaire
- self report data may be untrue
What is a structured interview?
A quantitive research method where the interviewer a set of prepared close ended questions.
What is an unstructured interview?
Where the interviewer may have a list of topics or questions, but has extra flexibility to lead the conversation further.
Obtaining data for correlational analysis
Gathering data to conduct a correlational study is very similar to self report techniques like interviews or tests, this can be used to find relationships with other types of data.
Positive correlation
When two variables move in the same direction - when one variable increases, the other does too.
Negative correlation
A relationship between two variables in which the value of one variable increases, the value of the other decreases.
No correlation
As the amount of one variable increases, the other decreases (and vice versa) there is no relationship between the two variables.
What is a correlation coefficient?
A number between -1 and 1 that tells how strong the relationship is