Methodologies Flashcards
Research Methods
What are the 5 types of experiment?
- Lab
- Field
- Natural
- Quasi
- Online
What is a lab experiment?
- Conducted under highly controlled conditions
- Accurate measurements
- The researcher decides on exactly how the experiment is carried out.
What is a field experiment?
- Conducted in the everyday environment of the participant.
- Experimenter manipulates the IV.
What is a natural experiment?
- Researcher has no control over the IV
- Natural occuring event
What is a quasi experiment?
- IV is not manipulated by the researcher
- Participants cannot be allocated randomly to each condition
- Controlled setting
- False experiment
What is an online experiment?
- Conducted online
- Can assess participants through the internet or social networking
- Questionnaires
Strengths + Weaknesses of a lab experiment
STRENGTHS
- High control of variables
- Replicable
- Can establish C&E
WEAKNESSES
- Low ecological validity
- Investigator effects (DCs)
- Behaviour not always natural
Strengths + Weaknesses of a field experiment
STRENGTHS
- C&E can be established
- High ecological validity
- Reduction in DCs
WEAKNESSES
- Reduced control over extraneous variables
- Time consuming
- Difficult to replicate
Strengths + Weaknesses of a natural experiment
STRENGTHS
- High ecological validity
- Useful when impossible to replicate variables
WEAKNESSES
- Less control over variables
- Difficult to replicate
- Can’t clearly identify C&E
- Low likelihood of desired behaviour is rare
Strengths + Weaknesses of a quasi experiment
STRENGTHS
- Often carried out under controlled conditions
WEAKNESSES
- Cannot randomly allocate participants due to confounding variables
Strengths + Weaknesses of an online experiment
STRENGTHS
- Can access large numbers of people
- Cost effective
- Data analysis is quicker + easier
WEAKNESSES
- Tends to be limited
- Ethical issues (consent + data)
What is an observation?
- Non experimental method
- Can see what people do without asking
- Natural/controlled environment
- Can be used to assess the DV in experiments
What are the two main categories of the observation?
Unstructured
- records behaviour with
no fixed system
Structured
- fixed, structured/
standardised procedures
are used for replicability
Strengths and Weaknesses of an unstructured observation
STRENGTHS
- Rich in detail (qualitative data)
WEAKNESSES
- Risk of observer bias
- Harder to analyse data
Strengths and Weaknesses of a structured observation
STRENGTHS
- Quantitative data (easy to analyse)
WEAKNESSES
- Lacks detail
State the 6 types of observation
Naturalistic
Controlled
Covert
Overt
Participant
Non- participant
What is a naturalistic observation?
- Natural environment
- No control of setting
Strengths and Weaknesses of a naturalistic observation.
STRENGTHS
- High external validity
- Reduced DCs
WEAKNESSES
- No control of variables
- Difficult to replicate
- Difficult to establish C&E
What is a controlled observation?
- Controlled environment
- Manipulate variables to observe the effects and control extraneous variables
Strengths and Weaknesses of a controlled observation.
STRENGTHS
- High levels of control
- Easier to establish C&E
- Easier to replicate
WEAKNESSES
- Artificial environment
- Low ecological validity
- May not observe natural behaviour
What is a covert observation?
- Take place without the knowledge/awareness of participants e.g secret cameras/ two way mirrors
Strengths and Weaknesses of a covert observation.
STRENGTHS
- No DCs, more valid
WEAKNESSES
- Lack of informed consent
What is an overt observation?
- Participants know they are being observed and recorded
- Given informed consent
Strengths and Weaknesses of an overt observation.
STENGTHS
-No ethical issues
WEAKNESSES
- DCs
What is a participant observation?
- researcher becomes a member of the group whose behaviour is observed
Strengths and Weaknesses of a participant observation.
STRENGTHS
- Greater insight into lives, increased validity
WEAKNESSES
- May identify too strongly (observer bias)
What is a non-participant observation?
- Observed at a distance
- Impractical or impossible to take part with the group