Methodologies/ Research Methods Flashcards
(39 cards)
Lab experiment: definition
Highly controlled environment, where extraneous variables can be under researchers control.
Lab experiment: strengths
+ Labs allow researchers to measure variables more easily, and control makes it easier to replicate
+ Allows for use of immobile equipment such as PET scans in Raine et al.
Lab experiment: weaknesses
- labs may cause participant to demonstrate artificial behaviour due to a social desirability bias.
- Some cannot be researched within a lab.
Field experiment: definition
Outside lab in participants natural setting. Shopping centre, hospital. Researcher goes to participants.
Field experiment: strengths
+ Useful in minimising artificial aspect of research
+ allows examination of behaviour in large range of contexts.
Field experiment: weaknesses
- more difficult to measure variables and control extraneous variables.
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Quasi experiment: definition
2 kinds, those with IV (natural experments) and without IV (difference studies).
Natural experiments: conducted when not possible to directly manipulate the IV. The IV varies ‘naturally’.
Difference studies: Key feature is that IV has not been made to vary by anyone, simply exists. An example is gender.
Quasi experiment: strengths
+ studying naturally occurring difference e.g. Raine et al. (1997) examined brain activity in murderers pleading NGRI compared to non-murderers. The study used naturally occurring groups rather than randomly assigning participants, making it ethically viable.
Quasi experiment: weaknesses
- lack of control makes it difficult to identify causal relationship.
- Independent groups design not possible so may be biases.
- unique characteristics of sample will mean it lacks population validity.
Observation: Participant vs Nonparticipant
No participant where observer watches participants from outside study. Participant is where observer is within group being observed.
Structured observation: definition
Objective and rigorous, using behavioural categories and sampling.
Behavioural categories: deciding how to categories different behaviours by Operationalisation.
Sampling procedures: event sampling is where number of times certain behaviour (event) occurs within given time frame. Time sampling is where behaviour is recorded every 30 seconds or so on.
Unstructured observation: definition
All information is recorded qualitatively but with no system. Usually not practical as too much info to record.
Observation: evaluation (general)
what people say they do and what they really do varies widely.
can capture spontaneous behaviour.
issue of observer bias as it is difficult to be objective, defecting validity.
Observation: evaluation (participant & non participant) 2
Non participant more likely to be objective, though participant offers greater insight.
Participants observations likely more overt, social desirability bias, so demand characteristics.
Though when covert introduces ethical concern of deception and consent.
Observation: evaluation (sampling procedures) 3
Both make more manageable.
Event useful when recorded behaviour happens occasionally, time when continuous. Time could miss important moments.
Questionnaire: definition
Set of written questions to collect info. Allow researcher to see what people think and feel rather than guessing through behaviour.
Structured interview: definition
Has predetermined questions, with no deviation. Conducted in real time.
Semi structured interview: definition
General aims and few predetermined questions, with more developed over course of interview.
Self report technique: strengths
+ allows expression of thoughts and feelings
+ more in depth
Self report techniques: weaknesses
- Risks social desirability bias.
- lacks validity as it requires participants to understand their thoughts and feelings
Questionnaire: strengths
+ may be more willing to reveal personal information than in an interview.
+ Impersonal nature may reduce social desirability bias risk.
+ Easy for participants to complete.
Questionnaire: weaknesses
- data only collected from those who can read and write
- take a lot of time to design.
Structured interview: strengths
+ Can be easily replicated because questions are standardised
+ easier to analyse
Semi structured interview: strengths
+ more detailed info available as it can be tailored.