PSY - Research Methods Flashcards
What is an experiment characterised by?
Manipulate participant’s experiences, whether causes predetermined response
What is a survey characterised by?
Ask re. thoughts, feelings and behaviours, questionnaire or interview
What do all research methods have?
Scientific principles/rules
Use of a sample
What are the types of research methods?
Experiment, Observational Study, Case Study, Survey, Interview, Rating Scales, Longitudinal Studies, Cross-Sectional Studies, Correlational Studies, Self-Reports, Questionnaires, Twin Studies, Adoption Studies
What are the three categories of research methods?
Determined by whether involve experiment &/or type of data
Experimental
Descriptive
Correlational
What is characteristic of experimental research?
If one variable > change in another variable
IV / DV / EV
Settings
Groups
What is an independent variable?
What is manipulated (cause)
What is the dependent variable?
Measure effect of IV
What are the two types of experimental settings?
Laboratory (setting/experiment)
Field (setting/experiment)
What are extraneous variables?
Those other than the IV that > change in DV
What are the two groups in experiments?
Experimental (_ condition, IV = present)
Control(_ condition, IV = absent)
What are the advantages of experiments?
- IV is changeable
- B/c it is controlled setting, can re-test
- Reporting > replication
What is a sample?
Subsection of participants from population
What is the population?
Entire group of research interest
What is sampling?
Process selecting sample
If scientific > generalise to population
What is a representative sample?
Same as population in personal characteristics
What is random sampling?
Every member in population has equal chance of being selected for sample, if not equal = biased
Eg. List (‘Sampling frame’)
What is stratified sampling?
Divide population into strata (based on personal characteristics)
Select from strata in population’s ratios
What is random-stratified sampling?
Random sampling per stratum
What is random allocation/assignment?
Equal chance of being put into experimental or control groups