Types of research Flashcards
The setting of the research would be:
Field study
Laboratory study
What is a field study
-natural environment
-hard to control
What is a Laboratory study
- unnatural environment, observer may bias results
- easier to control
Types of designs
- descriptive study
- correlational study
- experimental
What is self-report
- people describe their own behaviour. Questionnaire. Interview.
- People may not give accurate responses
What is observation
- researchers record data (naturalistic observation, tests)
- need to measure the right thing
What is a descriptive design
a type of research design that utilizes both quantitative and qualitative methods of research to collect data to describe a phenomenon, situation, or population
What is a correlational design
Experimenter measures relationship between two variables
Correlations can be + or -
What are confounding variables
Anything that could influence the
DV, that is not the IV
Example, placebo effects
What is an experiment
1) manipulate one thing, measure another
- can infer casualty
What is test retest reliability
Does a test give similar values if the same participant takes it two or more times
Inter- rater reliability
Does a test give similar values if administered by a different experimenter (‘rater’) ?
Measurement validity
Is the measurement a valid index- does it reasonably ‘stand for’- the psychological construct of interest
Define reliability
A measurement yields similar results when repeated
Define validity
A measurement predicts what it is supposed to predict
Define criterion validity (external validity)
A measurement relates to other measurements as expected
Define ecological validity
How much it generalised to the real world
Limitations of experimental research
Complex real- world issues may not be easily studied in the laboratory- experiments often have problems with ecological validity
Define population
All potential subjects in an experiment
Define sample
A subset of the population tested
Representative sample
A subset of the population that reflects the overall population as accurately as possible
Define effect size
The difference between two measurements
Define variability
More variable data- less significant
The number of measurements and significance
The more measurements the more significant